Marine propulsion system

Abstract

The present disclosure relates to a vessel propulsion system for a vessel, comprising: a drive unit comprising an upper portion and a lower portion, the upper portion being pivotable relative to the vessel and the lower portion being rotatably connected to the upper portion, the lower portion comprising one or more propellers; an input unit configured to receive an activation message indicating an operation mode of the driving unit; a control unit operatively connected with the drive unit and the input unit, the control unit configured to control the drive unit based on the start message received from the input unit, the control unit being configured to control the drive unit in response to receiving a beach mode start message from the input unit, the control unit is configured to rotate the lower portion to a stern-facing position of the one or more propellers relative to the vessel, and / or wherein the control unit is configured to rotate the lower portion to a stern-facing position of the one or more propellers relative to the vessel in response to receiving a swimming mode initiation message from the input unit, the lower portion is configured to rotate the lower portion to a position where the one or more propellers face at least forward and have a minimum of 90 degrees compared to a stern-facing position of the one or more propellers.

Description

Technical Field

[0001] The present disclosure generally relates to a propulsion system. In particular aspects, the present disclosure relates to a marine propulsion system for a marine vessel. The present disclosure may be applied to marine vessels, such as watercraft, motorboats, workboats, sport boats, dinghies, ships, and other marine vessel types. Although the present disclosure may be described with respect to a particular marine vessel, the present disclosure is not limited to any particular marine vessel. Background Art

[0002] Propulsion systems for ships are well known. These propulsion systems have drive units that can be operated in different positions in order to improve the performance of the ship and the energy consumption of powering the drive units. These known systems do not take into account the position of the ship in which it is operated, both at normal draft and at reduced draft.

[0003] The drive unit has one or more propellers which propel the vessel in a normal manner. However, sometimes people and / or equipment bathe and swim in the water around the sea vessel, which can have serious consequences that the people and / or equipment can come into contact with the propeller or propellers.

[0004] Therefore, there is a need for an improved marine propulsion system that enhances safety in different operating modes. Summary of the invention

[0005] According to a first aspect of the present disclosure, a ship propulsion system for a ship comprises

[0006] - a ship drive unit, the ship drive unit comprising an upper part and a lower part, the upper part being pivotable relative to the ship and the lower part being rotatably connected to the upper part, the lower part comprising one or more propellers,

[0007] - an input unit configured to receive an activation message indicating an operating mode of the drive unit,

[0008] - a control unit operatively connected to the drive unit and the input unit, the control unit being configured to control the drive unit based on the start message received from the input unit,

[0009] wherein the control unit is configured to rotate the lower portion to a position where the one or more propellers face aft relative to the vessel in response to receiving a beach mode activation message from the input unit, and / or

[0010] Wherein, the control unit is configured to rotate the lower part to a position in which the one or more propellers at least face forward and have a minimum of 90 degrees compared to the position of the one or more propellers facing the stern in response to receiving a swimming mode activation message from the input unit. A first aspect of the present disclosure can seek to address the shortcomings of known ship propulsion systems when operating in shallow waters and / or when people swim and bathe near the ship. Technical benefits can include providing a propulsion system with a drive unit having a lower part, the lower part being rotatably connected to an upper part, whereby when the control unit has received a swimming mode activation message, the control unit ensures that the one or more propellers are rotated to a position in which the one or more propellers at least face forward and have a minimum of 90 degrees compared to the position of the one or more propellers facing the stern. Thus, the risk of causing harm to people bathing or swimming around the ship is minimized. In addition, when a beach mode activation message is received, the control unit ensures that the lower part is rotated to a position in which the one or more propellers face the stern relative to the ship. Thus, the risk of damaging one or more propellers when operating in shallow waters is minimized.

[0011] Optionally, in some examples, including at least one preferred example, the control unit is configured to cause the drive unit to enter a reduced draft operating mode in response to receiving a beach mode activation message from the input unit, and / or wherein the control unit is configured to cause the drive unit to enter a maximum draft position in response to receiving a swim mode activation message from the input unit. Technical benefits may include minimizing the risk of hitting an obstacle when raising the drive unit in beach mode, and minimizing the risk of a person contacting one or more propellers when lowering the drive unit in swim mode.

[0012] Optionally, in some examples, including at least one preferred example, the initiation message is initiated by an operator or a pilot in command, and / or is an automatically generated initiation message. Technical benefits may include providing different possibilities for initiating the initiation message.

[0013] Optionally, in some examples, including at least one preferred example, the automatically generated start message is sensor data obtained from one or more sensors. Technical benefits may include that the sensors can detect different objects or other parameters around the vessel, and based on these detections, the automatically generated start message can be provided to the control unit. Thereby, the risk of human error or unexpected operation of the propulsion system can be minimized.

[0014] Optionally, in some examples, including at least one preferred example, the operator or the captain initiates a beach mode activation message at the input unit, and / or the operator or the captain initiates a swim mode activation message at the input unit. Technical benefits may include that the operator can ensure that the propulsion system is in the intended operating mode.

[0015] Optionally, in some examples, including at least one preferred example, the one or more sensors are configured to detect a draft around the vessel, and to initiate a beach mode initiation message based on the detected draft. Technical benefits may include: The propulsion system ensures that the risk of damage to the drive unit and one or more propellers during shallow water operations is minimized, even in the case of an inexperienced captain or operator of the vessel.

[0016] Optionally, in some examples, including at least one preferred example, one or more sensors are configured to detect obstacles and / or humans or animals around the vessel, and initiate the swimming mode initiation message based on the detection. Technical benefits may include the propulsion system ensuring that the risk of injury to humans or animals during bathing and swimming around the vessel is minimized.

[0017] Optionally, in some examples, including at least one preferred example, the drive unit is locked in swim mode until the operator or captain deactivates the swim mode activation message. Technical benefits may include ensuring that the drive unit is not accidentally activated when people are bathing and swimming around the vessel.

[0018] Optionally, in some examples, including at least one preferred example, the drive unit is configured to start when in swim mode by a special confirmation operation (such as unlocking by a physical or digital key). Technical benefits may include that the captain or operator should perform a dedicated special action before starting the drive unit, thereby minimizing the risk of harm to people bathing and swimming around the vessel, and minimizing the risk of accidental start of the drive unit.

[0019] Optionally, in some examples, including at least one preferred example, when in swim mode, one or more propellers are locked so that they cannot rotate. Technical benefits may include ensuring that one or more propellers cannot be intentionally rotated.

[0020] Optionally, in some examples, including at least one preferred example, when the swim mode activation message is deactivated, the lower portion is rotated to its intended position before allowing the one or more propellers to rotate. Technical benefits may include minimizing the risk of accidental activation of one or more propellers.

[0021] Optionally, in some examples, including at least one preferred example, the control unit is configured to issue a notification that it is safe to swim around the drive unit when the lower portion of the drive unit has rotated to a position where the one or more propellers are at least facing forward and at a minimum of 90 degrees compared to a position where the one or more propellers are facing aft and the one or more propellers are locked. Technical benefits may include notifying persons on and / or around the vessel that it is safe to bathe and swim around the vessel.

[0022] Optionally, in some examples, including at least one preferred example, the drive unit includes one or more unit sensors configured to detect the position of the lower portion of the drive unit and / or the position of the one or more propellers. Technical benefits may include that the propulsion system can provide information about the position of the one or more propellers to the captain or operator of the vessel.

[0023] Optionally, in some examples, including in at least one preferred example, the drive unit is connected to the transom of the vessel via a transom bracket. Technical benefits may include facilitating connection of the drive unit to the vessel and correct positioning relative to the vessel.

[0024] Optionally, in some examples, including in at least one preferred example, wherein the drive unit is arranged to move relative to the transom support for moving the drive unit into and out of the water,

[0025] The drive unit is connected to the transom support via a connecting arm having a first pivot joint connected to the transom support and a second pivot joint connected to the drive unit, wherein the drive unit is configured to be moved into and out of the water by pivoting the connecting arm about the first pivot joint or the drive unit about the second pivot joint or the connecting arm and the drive unit about two pivot joints. Technical benefits may include the ability to trim the drive unit at different trim positions of the drive unit independent of the water depth. In addition, the drive unit may be moved up and down and translated rearwardly relative to the transom support while maintaining an improved thrust angle. In addition, when maneuvering in shallow water close to a beach, a reduced draft may be provided in conjunction with turning one or more propellers to their stern facing position.

[0026] According to a second aspect of the present disclosure, a method of operating a marine propulsion system as claimed in any one of the preceding claims comprises:

[0027] - providing a propulsion system as claimed in any one of the preceding claims on board a vessel,

[0028] - receiving a start message indicating an operating mode of the drive unit,

[0029] - controlling the drive unit based on the activation message,

[0030] - Receive Beach Mode activation notification,

[0031] - rotating the lower portion to a position where the one or more propellers face aft relative to the vessel in response to receiving the beach mode initiation message, and / or

[0032] - Receive swimming mode activation notification,

[0033] - In response to receiving the swimming mode start message, the lower part is rotated to a position in which the one or more propellers are at least facing forward and have a minimum of 90 degrees compared to the position of the one or more propellers facing the stern. A second aspect of the present disclosure may seek to address the shortcomings of known ship propulsion systems when operating in shallow waters and / or when people are swimming and bathing near the ship. Technical benefits may include providing a propulsion system having a drive unit having a lower part that is rotatably connected to an upper part, whereby when the control unit has received a swimming mode start message, the control unit ensures that the one or more propellers are rotated to a position in which the one or more propellers are at least facing forward and have a minimum of 90 degrees compared to the position of the one or more propellers facing the stern. Thereby, the risk of causing harm to people bathing or swimming around the ship is minimized. In addition, when a beach mode start message is received, the control unit ensures that the lower part is rotated to a position in which the one or more propellers face the stern relative to the ship. Thereby, the risk of damaging one or more propellers when operating in shallow waters is minimized.

[0034] Those skilled in the art will appreciate that the disclosed aspects, examples (including any preferred examples), and / or the accompanying claims may be appropriately combined with each other. Additional features and advantages are disclosed in the following description, claims, and drawings, and in part will be apparent to those skilled in the art or recognized by practicing the disclosure as described herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Examples are described in more detail below with reference to the accompanying drawings.

[0036] Figures 1 to 3 is an exemplary marine propulsion system according to an example.

[0037] Figure 4 A side view of a marine propulsion system is shown, wherein one or more propellers have been rotated to face forward.

[0038] Figure 5 A top view of the drive unit is shown.

[0039] Figure 6a to Figure 6g A top view is shown of a sequence for rotating a lower portion of a drive unit according to an example.

[0040] Figures 7 to 9 A marine propulsion system according to an example is shown.

[0041] Figure 10 to Figure 11 A side view of a drive unit translated rearwardly is shown according to an example.

[0042] Figures 12 to 15 Different views of an example of a connecting arm according to an example are shown.

[0043] Figure 16 to Figure 17 Different views of another example of a connecting arm according to an example are shown.

[0044] Figure 18 to Figure 19 Different views of another example of a connecting arm according to an example are shown.

[0045] Fig. 20 A view showing another example of a connecting arm according to an example is shown.

[0046] Fig.21 is another view of the example. DETAILED DESCRIPTION

[0047] The detailed description set forth below provides information and examples of the disclosed technology in sufficient detail to enable those skilled in the art to practice the disclosure.

[0048] Figures 1 to 3 is an exemplary view of a marine propulsion system 1 for a marine vessel 100 according to an example. Figure 1 , a ship propulsion system 1 comprises a drive unit 3, the drive unit comprising an upper part 20 and a lower part 21, the upper part 20 being pivotable relative to the ship 100 and the lower part 21 being rotatably connected to the upper part 20, the lower part 21 comprising in this example a first propeller 13a and a second propeller 13b. The upper part 20 of the drive unit 3 can be moved relative to the transom 101 of the ship 100, so that the drive unit can be tilted in and out of the water and / or trimmed in the water to a desired trim angle. Thus, the upper part 20 can be moved relative to the ship 100. The lower part 21 is rotatably connected to the upper part 20, whereby the lower part can be rotated relative to the upper part 20 about an axis R. The lower part 21 is configured to follow the movement of the upper part 20 relative to the ship 100.

[0049] The ship propulsion system 1 further includes: an input unit 22, the input unit being configured to receive a start message indicating an operation mode of the drive unit 3; and a control unit 23, the control unit being operatively connected to the drive unit 3 and the input unit 22, the control unit 23 being configured to control the drive unit 3 based on the start message received from the input unit 22. The input unit 22 may be arranged at the ship 100 or at the drive unit 3. Figure 1 In the example in FIG. 1 , the input unit 22 is arranged at the ship 100. The control unit may also be arranged at the ship 100 or at the drive unit 3. Figure 1 In the example in FIG. 2 , the input unit 22 is arranged on the vessel 100 .

[0050] According to the present disclosure, the control unit 23 is configured to rotate the lower part 21 to a position where the one or more propellers face the stern relative to the vessel in response to receiving a beach mode activation message from the input unit 22, such as Figure 1 , and / or wherein the control unit 23 is configured to rotate the lower part 21 to a position where the one or more propellers 13a, 13b face at least forward and have a minimum of 90 degrees compared to a position of the one or more propellers facing the stern in response to receiving a swimming mode activation message from the input unit. For example, the beach mode activation message can be activated when the vessel 100 approaches a shallow water area or a port. The swimming mode activation message can be activated when a person on the vessel 100 wants to swim around the vessel 100, for example, by using a bathing platform 103 arranged at the transom 101 of the vessel 100.

[0051] Furthermore, the control unit 23 is configured to cause the drive unit to enter a reduced draft operation mode in response to receiving a beach mode activation message from the input unit 22, and / or wherein the control unit 23 is configured to cause the drive unit to enter a maximum draft position in response to receiving a swim mode activation message from the input unit 22.

[0052] Therefore, when the control unit 23 receives the beach mode start message, the drive unit 3 can move upward to the reduced draft position. In addition, when the control unit 23 receives the swimming mode start message, the drive unit 3 can move downward to the maximum draft position.

[0053] exist Figures 1 to 3 In the example, the propellers 13a, 13b are configured as push drives, so in normal operation, they push the vessel 100. In this example, the first propeller 13a and the second propeller 13b are arranged behind the lower part 21 so that they will push the lower part 21 when they rotate.

[0054] The drive unit 3 can be made to trim at different angles to optimize the thrust angle of the propellers 13a, 13b during different operating conditions. Figure 1 In the embodiment, the drive unit 3 is positioned in a balanced trim state, wherein the thrust angles of the first propeller 13a and the second propeller 13b are zero.

[0055] exist Figure 2 , the drive unit 3 has been pivoted in a clockwise direction relative to the vessel in order to position the drive unit 3 in a negative trim where the thrust angle A of the first propeller 13a and the second propeller 13b is negative.

[0056] exist Figure 3 , the drive unit 3 has been pivoted in a counterclockwise direction relative to the vessel 100 in order to position the drive unit 3 in a positive trim where the thrust angle A of the first propeller 13a and the second propeller 13b is positive.

[0057] Figure 4 yes Figure 1 1 , which is shown in beach mode, wherein the lower part 21 has been rotated relative to the upper part 20 about the axis R. The control unit 23 rotates the lower part 21 to a position where the one or more propellers 13a, 13b face forward toward the vessel 100 in response to receiving a swimming mode initiation message from the input unit 22. In this example, the first propeller 13a and the second propeller 13b are in contact with each other. Figure 1 180 degrees compared to its position shown in FIG. According to the present disclosure, the control unit 23 can rotate the first propeller 13a and the second propeller 13b by a minimum of 90 degrees compared to the stern-facing position of one or more propellers 13a, 13b. In addition, the control unit 23 can be configured to lower the drive unit 3 to its lowest position so as to further protect the swimmer from damage by one or more propellers 13a, 13b.

[0058] In the example, the start message is initiated by an operator or captain on the vessel 100 and / or is an automatically generated start message. The operator or captain can initiate a beach mode start message at the input unit 22, and / or the operator or captain can initiate a swim mode start message at the input unit 22.

[0059] In addition, the drive unit 3 can be locked in the swimming mode until the operator or captain deactivates the swimming mode activation message. In an example, the drive unit 3 is configured to start with a special confirmation operation (such as unlocking by a physical or digital key) when in the swimming mode. Thus, additional safety is added to the system 1 so that the drive unit 3 will not be accidentally operated when a swimmer is close to the drive unit 3.

[0060] In addition, when in swimming mode, one or more propellers 13a, 13b can be locked so that they cannot rotate. Moreover, when the swimming mode activation message is deactivated, the lower part 21 rotates to its expected position and then allows one or more propellers 13a, 13b to rotate.

[0061] The drive unit 3 may further comprise one or more unit sensors 25 configured to detect the position of the lower part 21 of the drive unit 3 and / or the position of the one or more propellers 13a, 13b. The one or more unit sensors 25 may be configured to detect the height position of the drive unit 3. Furthermore, the one or more unit sensors 25 are operatively connected to the control unit 23. Therefore, the control unit 23 is configured to control the drive unit 3 with the additional assistance of the detection of the one or more unit sensors 25.

[0062] exist Figure 5 In the top view, Figure 1 The propulsion system 1. The first propeller 13a and the second propeller 13b are arranged in their propulsion positions facing the stern, such as in combination with Figure 1 The automatically generated start message may also be based on sensor data obtained from one or more sensors 24. The one or more sensors 24 may be configured to detect the draft around the vessel 100 and initiate the beach mode start message based on the detected draft. In another example, the one or more sensors 24 are configured to detect obstacles and / or humans or animals around the vessel 100 and initiate the swimming mode start message based on the detection. The one or more sensors 24 may also be configured to detect obstacles and / or humans or animals near one or more propellers 13a, 13b. The one or more sensors 24 are operatively connected to the control unit 23.

[0063] One or more sensors 24 may be arranged on the vessel and / or on the drive unit 3. The sensor 24 may be a lidar sensor, a sonar sensor, a speed recorder, a torque sensor and / or a depth sensor. The one or more sensors 24 may be a basic on / off switch, sensing or detecting whether a door to the bathing platform is open or closed, or other mechanical parts. The one or more sensors 24 are configured to provide feedback to the control unit 23 on what mode the control unit 23 is allowed to activate.

[0064] In addition, the control unit 23 can be configured to issue a notification that the drive unit 3 is in beach mode when the lower part 21 of the drive unit 3 has rotated to a position where one or more propellers 13a, 13b face the stern relative to the vessel 100, whereby the drive unit 3 can operate the vessel in shallow water.

[0065] Furthermore, the control unit 23 may be configured to issue one or more indications for indicating when the swim mode is active and therefore it is safe to swim around the drive unit 3. At least the swim mode may be associated with a green light or indicator 30 arranged about the bathing platform 103 of the watercraft 100 so that swimmers in the water and / or on the watercraft 100 can see that it is safe to swim around the watercraft.

[0066] The control unit 23 is also configured to issue a notification that it is safe to swim around the drive unit 3 when the lower portion 21 of the drive unit 3 has been rotated to a position where one or more propellers 13a, 13b are at least facing forward and have a minimum of 90 degrees compared to a stern-facing position of the one or more propellers 13a, 13b and the one or more propellers 13a, 13b are locked and cannot rotate.

[0067] In addition, a laser radar ship sensor 40 may be arranged around the ship 100 to detect obstacles and / or humans around the ship 100. Figure 5 , the LiDAR ship sensor 40 is arranged at each corner of the ship 100. The LiDAR ship sensor 40 is operatively connected to the control unit 23, so that the control unit 23 is configured to control the drive unit 3 with the additional assistance of the detection of the LiDAR ship sensor 40. The control unit 23 may also be configured to process the detected obstacles and / or humans and present the detected obstacles and / or humans on a display for the operator or the captain, so that real-time data about objects around the drive unit 3 is presented to the captain.

[0068] The drive unit 3 may be an outboard motor. The motor may be an electric motor.

[0069] exist Figure 6a to Figure 6g In the example of rotating the lower part 21, the sequence is shown in a top view and is based on Figure 5 As an example, the position of the lower portion 21 of the first propeller 13a and the second propeller 13b facing the stern is set to zero degrees. Figure 6a The lower part 21 has been rotated clockwise to the same Figure 5 The position is 45 degrees compared to the position of Figure 6b The lower part 21 has been rotated clockwise to the same Figure 5 In this position, the drive unit 3 is in the swimming mode position. Figure 6c , the lower portion 21 has been further rotated clockwise relative to Figure 5 The position of the drive unit 3 is 135 degrees. In this position, the drive unit 3 is in the swimming mode position. In this position, the drive unit 3 is in the swimming mode position. Figure 6d, the lower portion 21 has been further rotated clockwise relative to Figure 5 The position is 180 degrees from the Figure 4 The position shown in FIG. 1 is the same as that shown in FIG. 1 , and the drive unit 3 is in the swimming mode position. In this position, the drive unit 3 is in the swimming mode position. Figure 6e , the lower portion 21 has been further rotated clockwise relative to Figure 5 The position of the drive unit 3 is 225 degrees. In this position, the drive unit 3 is in the swimming mode position. In this position, the drive unit 3 is in the swimming mode position. Figure 6f , the lower portion 21 has been further rotated clockwise relative to Figure 5 In this position, the drive unit 3 is in the swimming mode position. In this position, the drive unit 3 is in the swimming mode position. Figure 6g , the lower portion 21 has been further rotated clockwise relative to Figure 5 The position is 315 degrees.

[0070] In the example, the lower part 21 has been rotated in a clockwise direction. In another example, it can be rotated in a counter-clockwise direction, or it can be rotated in both directions.

[0071] The lower part 21 is connected to the upper part 20 so as to be rotatable 360 ​​degrees.

[0072] exist Figures 7 to 9 In the embodiment, the propellers 13a, 13b are configured as pulling drives, so in normal operation, they pull the vessel 100. In this example, the first propeller 13a and the second propeller 13b are arranged in front of the lower part 21 so that when they rotate, they will pull the lower part 21, such as Figure 7 As shown in the example in . Because in the normal operation mode, the first propeller 13a and the second propeller 13b face the front of the vessel 100, when the control unit 23 receives the swimming mode activation message from the input unit 22, they are locked in a position where one or more propellers 13a, 13b face at least forward and have a minimum of 90 degrees compared to the position of one or more propellers 13a, 13b facing the stern. In addition, the control unit 23 can bring the drive unit 3 into the maximum draft position. The lower part 21 rotates around the axis R.

[0073] exist Figure 8 In the example shown, the control unit 23 rotates the lower part 21 in response to receiving a beach mode activation message from the input unit 22, wherein the one or more propellers 13a, 13b face aft relative to the vessel 100. In the example shown, the drive unit 3 is translated rearwards while being raised.

[0074] exist Fig. 9 middle, Figure 7The drive unit is still in beach mode, with the first propeller 13a and the second propeller 13b facing the stern. Fig. 9 In the example shown in FIG. 1 , the control unit 23 causes the drive unit 3 to enter a state of Figure 8 The lower draft shown in .

[0075] Fig.10 is an exemplary view of a propulsion system 1 for a vessel 100 according to an example. The propulsion system 1 comprises: a transom bracket 2, which is configured to be connected to a transom 101 of the vessel 100; and a drive unit 3. The drive unit 3 is arranged to move relative to the transom bracket 2 for moving the drive unit 3 into and out of the water. The drive unit 3 comprises an upper part 20 and a lower part 21, the upper part 20 being pivotable relative to the vessel 100, and the lower part 21 being rotatably connected to the upper part 20, the lower part 21 comprising a first propeller 13a and a second propeller 13b in this example. The drive unit 3 is connected to the transom bracket 2 via a connecting arm 4, the connecting arm having a first pivot joint 5 connected to the transom bracket 2 and a second pivot joint 6 connected to the drive unit 3. The drive unit 3 is configured to be moved into and out of the water by pivoting the connecting arm 4 around the first pivot joint 5 or the drive unit 3 around the second pivot joint 6 or the connecting arm 4 and the drive unit 3 around both pivot joints 5, 6. This enables the drive unit 3 to be moved up and down and tilted.

[0076] exist Fig.10 , the drive unit 3 has been moved backwards while being tilted upwards by rotating the connecting arm 4 around the first pivot joint 5. In addition, the drive unit 3 has been rotated around the second pivot joint 6 of the connecting arm 4 so that the drive unit 3 obtains a positive pitch angle A.

[0077] The drive unit 3 is configured to move the connecting arm 4 by pivoting the connecting arm 4 about the first pivot joint 5 in a clockwise or counterclockwise direction independently of any pivoting of the drive unit about the second pivot joint 6. Fig.10 , the connecting arm 4 has been pivoted around the first pivot joint 5 in the counterclockwise direction.

[0078] In addition, the drive unit 3 is configured to move by pivoting the drive unit about the second pivot joint 6 in a clockwise or counterclockwise direction independently of any pivoting of the connecting arm 4 about the first pivot joint 5. Fig.10 , the drive unit 3 has been pivoted about the second pivot joint 6 in the counterclockwise direction.

[0079] The drive unit 3 is configured to move by causing the connecting arm 4 to pivot in a clockwise or counterclockwise direction around the first pivot joint 5 while the drive unit 3 pivots in a clockwise or counterclockwise direction around the second pivot joint 6. Fig.10 , the connecting arm 4 has been pivoted in the counterclockwise direction about the first pivot joint 5, and the drive unit 3 has been pivoted in the counterclockwise direction about the second pivot joint 6. Therefore, by pivoting the drive unit 3 about the second pivot joint 6, the drive unit 3 can be trimmed in different trim positions, and at the same time the position of the drive unit in the water can be obtained by pivoting the connecting arm 4 about the first pivot joint 5. The position of the drive unit 3 relative to the transom bracket 2 can be freely positioned. In addition, the drive unit 3 can be moved up and down and translated backwards relative to the transom bracket 2 while maintaining an improved thrust angle A.

[0080] In the example, the drive unit 3 comprises one or more propellers. Fig.10 In the example, the drive unit 3 includes a first propeller 13a and a second propeller 13b. In this example, the first propeller 13a and the second propeller 13b are configured to push the vessel 100 in the forward motion of the vessel 100. In another example, one or more propellers are configured to pull the vessel 100 in the forward motion of the vessel 100.

[0081] exist Fig.10 In the embodiment, the first propeller 13a and the second propeller 13b have a thrust angle A, which is determined by Fig.10 . The drive unit 3 has been pivoted about the second pivot joint 6 in the counterclockwise direction so that a positive trim angle of the first propeller 13a and the second propeller 13b and thus a thrust angle A is obtained. In the example, the first propeller 13a is arranged to rotate in the opposite direction compared to the second propeller 13b. By means of the present disclosure, it is obtained that the drive unit 3 can be freely positioned relative to the transom bracket 2 and therefore relative to the transom 101 of the vessel 100 in terms of rotation and in terms of vertical and horizontal movement.

[0082] exist Fig.10 In the embodiment, a linear actuator 7 is arranged between the connecting arm 4 and the drive unit 3. The linear actuator 7 is configured to pivot the drive unit 3 in a clockwise or counterclockwise direction around the second pivot joint 6, and thus, the pitch angle and the thrust angle of the drive unit 3 can be set according to the situation. The linear actuator 7 is connected to the drive unit 3 at a certain distance below the second pivot joint 6, and is connected to the drive unit 3 via the drive pivot joint 12, so that it is ensured that the linear actuator 7 transmits force to pivot the drive unit 3 around the second pivot joint 6.

[0083] exist Fig.11 In, with Fig.10Compared with the above, the drive unit 3 has been tilted further upward by rotating the connecting arm 4 around the first pivot joint 5. In addition, the drive unit 3 has been rotated in the counterclockwise direction around the second pivot joint 6 of the connecting arm 4, so that the thrust angle A of the first propeller 13a and the second propeller 13b is improved even if the drive unit 3 has been raised to a position higher than the bottom 102 of the vessel 100. As a result, the drive unit 3 can be trimmed to an optimal position regardless of operation in shallow waters, because the bottom 102 of the vessel 100 can protect the drive unit 3 and its propellers from impact.

[0084] and Fig.10 compared to, Fig.11 The connecting arm 4 in has further pivoted in the counterclockwise direction around the first pivot joint 5, thus tilting the drive unit 3 upwards. The connecting arm 4 is configured to pivot around the first pivot joint 5 by a maximum of 200 degrees, preferably a maximum of 180 degrees.

[0085] Additionally, the drive unit 3 may also be positioned so that it is raised out of the water in a parked position when not in use, for example when the vessel 100 is located in a port or a beach.

[0086] exist Fig.10 , the drive unit 3 is positioned in a balanced trim state. The drive unit 3 is positioned in its low position, wherein the connecting arm has pivoted in a clockwise direction about the first pivot joint 5. In addition, the drive unit 3 has pivoted about the second pivot joint 6 of the connecting arm so as to be in a balanced trim state in which the thrust angles of the first propeller 13a and the second propeller 13b are zero.

[0087] exist Figures 12 to 15 In FIG. 1 , an example of an arrangement of several linear actuators 7 is shown. Two linear actuators 7 are arranged adjacent to each other and are connected to the connecting arm 4 at one end and are configured to be connected to the drive unit at the opposite end. The linear actuator 7 may be a hydraulic cylinder. The linear actuator 7 may be arranged to pivot the drive unit about the second pivot joint 6 by withdrawing the cylinder or retracting the cylinder. Fig.12 In the embodiment, the connecting arm 4 does not pivot about the first pivot joint 5, whereby the connecting arm 4 is positioned along the transom support 2. Fig.13 In the example, the connecting arm 4 has been pivoted in the counterclockwise direction about the first pivot joint 5, whereby the connecting arm 4 protrudes from the transom bracket 2. In this example, one end of an additional linear actuator 7' is connected to the connecting arm 4 and the other end thereof is connected to the transom bracket 2. The linear actuator 7' is arranged to pivot the connecting arm 4 about the first pivot joint 5 by withdrawing or retracting the cylinder. Fig.14 In , the cylinder has been withdrawn, causing the connecting arm 4 to rotate in the counterclockwise direction. An additional linear actuator 7' assists in raising and lowering the connecting arm 4 and thus the drive unit. Fig.14In FIG. 4 , it is shown that the connecting arm 4 can have two parts spaced apart, so that the additional linear actuator 7 ′ can be arranged in the space between the two parts. This results in a compact design of the connecting arm 4 and the transom bracket 2. Fig.14 As shown in , the first pivot joint 5 may be hollow. Fig.15 , this example is shown in a side view. The linear actuator 7 may be longer than the additional linear actuator 7'. A hydraulic system may be arranged for powering the linear actuator. The hydraulic system may be arranged in the drive unit or at the vessel.

[0088] In another example, the rotary motor is arranged to be connected to the first pivot joint. The rotary motor is configured to rotate the connecting arm in clockwise and counterclockwise directions around the first pivot joint. The rotary motor can also be arranged to be connected to the second pivot joint. The rotary motor is configured to rotate the drive unit in clockwise and counterclockwise directions around the second pivot joint.

[0089] exist Fig.16 , another example is shown. A gear transmission unit 8 is arranged in the first pivot joint 5, and a motor or a stepper motor 9 is arranged to power the gear transmission unit 8. The gear transmission unit 8 may have different designs and may be a planetary gear transmission unit. The gear transmission unit 8 together with the stepper motor is configured to rotate the connecting arm 4 in clockwise and counterclockwise directions around the first pivot joint 5. The gear transmission unit may also be arranged in the second pivot joint, and a motor or a stepper motor may be arranged to power the gear transmission unit. The gear transmission unit together with the stepper motor may be configured to rotate the drive unit in clockwise and counterclockwise directions around the second pivot joint 6. In Fig.16 In the embodiment, two linear actuators 7 are arranged between the connecting arm 4 and the drive unit for rotating the drive unit around the second pivot joint 6. Fig.17 In FIG. 8 , a side view of a gear transmission unit 8 arranged in connection with a first pivot joint 8 is shown.

[0090] exist Figure 18 to Figure 19 , another example is shown, in which a slewing drive 11 is arranged to be connected to the first pivot joint 5 for rotating the connecting arm 4 in clockwise and counterclockwise directions around the first pivot joint. Two linear actuators 7 are arranged between the connecting arm 4 and the drive unit for rotating the drive unit around the second pivot joint 6.

[0091] exist Fig. 20 In FIG. 4 , another example is shown in which a double gear unit or double planetary gear unit 10 is arranged together with a separate stepper motor 9 in connection with the pivot joints 5 , 6 .

[0092] In another example, the dual gear transmission unit or dual planetary gear transmission unit may be powered by a stepper motor.

[0093] In another example, a hydraulic radial piston motor may be arranged in the second pivot joint.

[0094] Many different combinations of rotating the first pivot joint and / or the second pivot joint are possible according to the present disclosure.

[0095] The propulsion system may also include a kick up function.

[0096] The ship propulsion system may include two or more drive units 3, each drive unit 3 including an upper part 20 and a lower part 21, the upper part 20 being pivotable relative to the ship 100 and the lower part 21 being rotatably connected to the upper part 20, the lower part 21 including one or more propellers 13a, 13b. The control unit 23 is configured to rotate the lower part 21 to a position where the one or more propellers 13a, 13b face aft relative to the ship in response to receiving a beach mode activation message from the input unit 22, and / or wherein the control unit 23 is configured to rotate the lower part 21 to a position where the one or more propellers 13a, 13b face at least forward and at least 90 degrees compared to the aft-facing position of the one or more propellers 13a, 13b in response to receiving a swim mode activation message from the input unit 22. The control unit 23 may rotate each lower part 21 in the same direction or in opposite directions.

[0097] The propulsion system may further include two or more transom supports 2 configured to be connected to the transom of the vessel, and two or more drive units 3, each drive unit 3 being arranged to move relative to the transom support 2 to move the drive unit 3 into and out of the water, each drive unit 3 being connected to the transom support 2 via a connecting arm 4 having a first pivot joint 5 connected to the transom support 2 and a second pivot joint 6 connected to the drive unit 3.

[0098] In addition, the control unit 23 may be operatively connected to the first pivot joint, the second pivot joint, the linear actuator, the rotary motor, the electric motor, the hydraulic system and / or the stepper motor.

[0099] Furthermore, the lower part 21 is rotatably connected to the upper part 20 , whereby the ship can be steered and turned by rotating the lower part 21 .

[0100] The present disclosure also relates to a vessel 100 comprising the vessel propulsion system 1 as disclosed above. The vessel 100 may further comprise a bathing platform 103 and / or a transom 101 .

[0101] The present disclosure also relates to a method of operating a ship propulsion system 1 as described above, the method comprising:

[0102] - providing a ship propulsion system 1 as described above on a ship 100,

[0103] - receiving a start message indicating an operating mode of the drive unit 3,

[0104] - controlling the drive unit 3 based on the start message,

[0105] - Receive Beach Mode activation notification,

[0106] - rotating the lower portion 21 to a position where one or more propellers 13a, 13b face aft relative to the vessel in response to receiving the beach mode activation message, and / or

[0107] - Receive swimming mode activation message,

[0108] - in response to receiving the swim mode activation message, rotating the lower part 21 to a position in which the one or more propellers 13a, 13b face at least forward and at a minimum of 90 degrees compared to a stern facing position of the one or more propellers.

[0109] In addition, the start message is initiated by an operator or a captain, and / or is an automatically generated start message.

[0110] Fig.21 is another view of the example. Fig.21The invention discloses a ship propulsion system 1 for a ship 100, wherein the ship propulsion system comprises: a drive unit 3, wherein the drive unit comprises an upper part 20 and a lower part 21, wherein the upper part 20 is pivotable relative to the ship 100 and the lower part 21 is rotatably connected to the upper part 20, wherein the lower part 21 comprises one or more propellers 13a, 13b; an input unit 22, wherein the input unit is configured to receive a start message indicating an operation mode of the drive unit 3; and a control unit 23, wherein the control unit is operatively connected to the drive unit 3 and the input unit 22, wherein the control unit 23 is configured to receive a start message indicating an operation mode of the drive unit 3 based on the information received from the input unit 22. The control unit 23 controls the drive unit 3 in response to receiving a start message of the beach mode from the input unit 22, wherein the control unit 23 is configured to rotate the lower part 21 to a position in which the one or more propellers 13a, 13b face the stern relative to the vessel 100 in response to receiving a start message of the swim mode from the input unit 22, and / or wherein the control unit 23 is configured to rotate the lower part 21 to a position in which the one or more propellers 13a, 13b face at least forward and have a minimum of 90 degrees compared to the stern facing position of the one or more propellers 13a, 13b in response to receiving a start message of the swim mode from the input unit 22. In addition, the vessel propulsion system 1 comprises a tilt and trim arrangement 50, to which the control unit 23 is operatively connected. The indicator 30 may be arranged with respect to the bathing platform 103 of the vessel 100 so that swimmers in the water and / or on the vessel 100 can see that it is safe to swim around the vessel 100.

[0111] Example 1: A ship propulsion system (1) for a ship (100), comprising

[0112] - a drive unit (3), the drive unit comprising an upper part (20) and a lower part (21), the upper part (20) being pivotable relative to the vessel (100) and the lower part (21) being rotatably connected to the upper part (20), the lower part (21) comprising one or more propellers (13a, 13b),

[0113] - an input unit (22) configured to receive a start message indicating an operating mode of the drive unit (3),

[0114] - a control unit (23) operatively connected to the drive unit (3) and the input unit (22), the control unit (23) being configured to control the drive unit (3) based on the start message received from the input unit (22),

[0115] wherein the control unit (23) is configured to rotate the lower part (21) to a position in which the one or more propellers (13a, 13b) face the stern relative to the vessel in response to receiving a beach mode activation message from the input unit (22), and / or

[0116] The control unit (23) is configured to rotate the lower part (21) to a position in which the one or more propellers (13a, 13b) at least face forward and have a minimum of 90 degrees compared to a stern-facing position of the one or more propellers (13a, 13b) in response to receiving a swimming mode activation message from the input unit (22).

[0117] Example 2: A ship propulsion system (1) as described in Example 1, wherein the control unit (23) is configured to cause the drive unit to enter a reduced draft operation mode in response to receiving a beach mode activation message from the input unit (22), and / or wherein the control unit (23) is configured to cause the drive unit to enter a maximum draft position in response to receiving a swimming mode activation message from the input unit (22).

[0118] Example 3: A ship propulsion system (1) as described in any of the preceding examples, wherein when the control unit (23) receives the beach mode activation message, the drive unit (3) moves upward to a reduced draft position.

[0119] Example 4: The ship propulsion system (1) as described in Example 1, wherein when the control unit (23) receives the swimming mode start message, the drive unit (3) moves downward to the maximum draft position.

[0120] Example 5: A ship propulsion system (1) as described in any of the preceding examples, wherein the one or more propellers (13a, 13b) are configured as a propulsion drive.

[0121] Example 6: A ship propulsion system (1) as described in any of Examples 1 to 4, wherein the one or more propellers (13a, 13b) are configured as a pulling drive.

[0122] Example 7: A ship propulsion system (1) as described in Example 5, wherein when the control unit (23) receives the swimming mode start message, the lower part (21) of the propulsion drive is configured to rotate to a position in which the one or more propellers (13a, 13b) at least face forward and have a minimum of 90 degrees compared to the stern-facing position of the one or more propellers (13a, 13b).

[0123] Example 8: A ship propulsion system (1) as described in Example 6, wherein the lower portion (21) of the pull drive is configured to rotate to a position where the one or more propellers (13a, 13b) face the stern relative to the ship (100) when the control unit (23) receives the beach mode start message.

[0124] Example 9: A ship propulsion system (1) as described in any of the preceding examples, wherein the start message is initiated by an operator or a captain, and / or is an automatically generated start message.

[0125] Example 10: The marine propulsion system (1) of Example 9, wherein the automatically generated start-up message is sensor data obtained from one or more sensors (24).

[0126] Example 11: The ship propulsion system (1) of Example 9, wherein the operator or the captain initiates the beach mode activation message at the input unit (22).

[0127] Example 12: The ship propulsion system (1) of Example 9, wherein the operator or the captain initiates the swimming mode activation message at the input unit (22).

[0128] Example 13: The marine propulsion system (1) of Example 10, wherein the one or more sensors (24) are configured to detect a draft around the marine vessel (100) and to initiate the beach mode activation message based on the detected draft.

[0129] Example 14: The vessel propulsion system (1) of Example 10, wherein the one or more sensors (24) are configured to detect obstacles and / or humans or animals around the vessel (100), and to initiate the swimming mode activation message based on the detection.

[0130] Example 15: A ship propulsion system (1) as described in Example 10, wherein the one or more sensors (24) are configured to detect obstacles and / or humans or animals near the one or more propellers (13a, 13b).

[0131] Example 16: The ship propulsion system (1) as described in Examples 10, 13, 14 and / or 15, wherein the one or more sensors (24) are operatively connected to the control unit (23).

[0132] Example 17: A ship propulsion system (1) as described in Examples 10, 13, 14, 15 and / or 16, wherein the sensor (24) is a lidar sensor, a sonar sensor, a speed recorder, a torque sensor, a depth sensor, a basic on / off switch sensor, etc.

[0133] Example 18: The marine propulsion system (1) as described in any of the preceding examples, wherein the drive unit (3) is locked in the swimming mode until the operator or the captain deactivates the swimming mode activation message.

[0134] Example 19: A marine propulsion system (1) as described in any of the preceding examples, wherein the drive unit (3) is configured to start with a special confirmation operation (such as unlocking by a physical or digital key) when in swimming mode.

[0135] Example 20: A marine propulsion system (1) as described in any of the preceding examples, wherein when in the swimming mode, the one or more propellers (13a, 13b) are locked so that they cannot rotate.

[0136] Example 21: A marine propulsion system (1) as described in any of the preceding examples, wherein when the swimming mode activation message is deactivated, the lower part (21) rotates to its intended position before allowing the one or more propellers (13a, 13b) to rotate.

[0137] Example 22: A ship propulsion system (1) as described in any of the preceding examples, wherein the control unit (23) is configured to issue a notification that it is safe to swim around the drive unit (3) when the lower portion (21) of the drive unit (3) has been rotated to a position in which the one or more propellers (13a, 13b) are at least facing forward and have a minimum of 90 degrees compared to a stern-facing position of the one or more propellers (13a, 13b) and the one or more propellers (13a, 13b) are locked.

[0138] Example 23: A ship propulsion system (1) as described in any of the preceding examples, wherein the control unit (23) is configured to issue a notification that the drive unit (3) is in the beach mode when the lower portion (21) of the drive unit (3) has rotated to a position where the one or more propellers (13a, 13b) face the stern relative to the ship (100), thereby allowing the drive unit (3) to operate the ship in shallow waters.

[0139] Example 24: A marine propulsion system (1) as described in any of the preceding examples, wherein the control unit (23) is configured to issue one or more indications for indicating when the swimming mode is active and therefore it is safe to swim around the drive unit (3).

[0140] Example 25: A marine propulsion system (1) as described in any of the preceding examples, wherein at least the swimming mode is associated with a green light arranged with respect to a bathing platform (103) of the marine vessel (100).

[0141] Example 26: A ship propulsion system (1) as described in any of the preceding examples, wherein a lidar ship sensor (40) is arranged around the ship (100) to detect obstacles and / or humans around the ship (100).

[0142] Example 27: The ship propulsion system (1) as described in Example 26, wherein the lidar ship (40) is operatively connected to the control unit (23).

[0143] Example 28: The ship propulsion system (1) as described in Example 27, wherein the control unit (23) is configured to process the detected obstacles and / or humans and present the detected obstacles and / or humans on a display for the operator or the captain.

[0144] Example 29: A marine propulsion system (1) as described in any of the preceding examples, wherein the drive unit (3) comprises an outboard motor.

[0145] Example 30: A ship propulsion system (1) as described in Example 29, wherein the motor is an electric motor.

[0146] Example 31: A ship propulsion system (1) as described in any of the preceding examples, wherein the drive unit (3) includes one or more unit sensors (25), and the one or more unit sensors are configured to detect the position of the lower part (21) of the drive unit (3) and / or the position of the one or more propellers (13a, 13b).

[0147] Example 32: The ship propulsion system (1) of Example 31, wherein the one or more unit sensors (25) are configured to detect the height position of the drive unit (3).

[0148] Example 33: A ship propulsion system (1) as described in Example 31 and / or 32, wherein the one or more unit sensors (25) are operatively connected to the control unit (23).

[0149] Example 34: A ship propulsion system (1) as described in any of the preceding examples, further comprising a tilt and trim arrangement (50), the control unit (23) being operatively connected to the tilt and trim arrangement.

[0150] Example 35: The ship propulsion system (1) of Example 34, wherein the control unit (23) is configured to automatically set the drive unit (3) to a predetermined operating mode based on the inclination and / or the trim of the drive unit (3).

[0151] Example 36: A ship propulsion system (1) as described in any of the preceding examples, wherein the drive unit (3) is connected to the transom (101) of the ship (100) via a transom bracket (2).

[0152] Example 37: A ship propulsion system (1) as described in Example 36, wherein the drive unit (3) is arranged to move relative to the transom bracket (2) so that the drive unit (3) moves into and out of the water, and the drive unit (3) is connected to the transom bracket (2) via a connecting arm (4), and the connecting arm has a first pivot joint (5) connected to the transom bracket (2) and a second pivot joint (6) connected to the drive unit (3), wherein the drive unit (3) is configured to move into and out of the water by pivoting the connecting arm (4) around the first pivot joint (5) or the drive unit (3) around the second pivot joint (6) or the connecting arm (4) and the drive unit (3) around two pivot joints (5, 6).

[0153] Example 38: A ship propulsion system (1) as described in Example 37, wherein the drive unit (3) is configured to move the connecting arm (4) by pivoting around the first pivot joint (5) in a clockwise or counterclockwise direction independently of any pivoting of the drive unit (3) around the second pivot joint (6).

[0154] Example 39: A ship propulsion system (1) as described in Example 37, wherein the drive unit (3) is configured to move by pivoting the drive unit (3) in a clockwise or counterclockwise direction around the second pivot joint (6) independently of any pivoting of the connecting arm (4) around the first pivot joint (5).

[0155] Example 40: A ship propulsion system (1) as described in Example 37, wherein the drive unit (3) is configured to move by pivoting the connecting arm (4) in a clockwise or counterclockwise direction around the first pivot joint (5) while the drive unit (3) pivots in a clockwise or counterclockwise direction around the second pivot joint (6).

[0156] Example 41: A ship propulsion system (1) as described in any of Examples 37 to 40, wherein a rotary motor is arranged in the first pivot joint (5) and / or in the second pivot joint (6).

[0157] Example 42: A ship propulsion system (1) as described in any one of Examples 37 to 41, wherein the linear actuator (7) is arranged between the transom bracket (2) and the connecting arm (4), or between the connecting arm (4) and the drive unit (3).

[0158] Example 43: A ship propulsion system (1) as described in any of the preceding examples, wherein a plurality of linear actuators (7) are arranged between the transom support (2) and the connecting arm (4), or between the connecting arm (4) and the drive unit (3).

[0159] Example 44: A marine propulsion system (1) as described in any of Examples 42 to 43, wherein a hydraulic system is arranged to provide power to the linear actuator (7).

[0160] Example 45: A ship propulsion system (1) as described in any of Examples 41 to 44, wherein the rotary motor and the linear actuator (7) are configured to pivot the connecting arm (4) about the first pivot joint (5) and / or to pivot the drive unit (3) about the second pivot joint (6).

[0161] Example 46: A ship propulsion system (1) as described in Example 37, wherein the gear transmission unit (8) is arranged in the first pivot joint (5) and / or in the second pivot joint (6).

[0162] Example 47: A ship propulsion system (1) as described in Example 46, wherein the gear transmission unit (8) is a planetary gear transmission unit arranged in the first pivot joint (5) and / or in the second pivot joint (6).

[0163] Example 48: A ship propulsion system (1) as described in Example 46, wherein a motor or a stepper motor (9) is arranged to provide power to the gear transmission unit and / or the planetary gear transmission unit.

[0164] Example 49: A ship propulsion system (1) as described in any of Examples 46 to 48, wherein the gear transmission unit and / or the planetary gear transmission unit and / or the linear actuator are configured to move the drive unit (3) by pivoting the connecting arm (4) around the first pivot joint (5) and / or by pivoting the drive unit (3) around the second pivot joint (6).

[0165] Example 50: A ship propulsion system (1) as described in any of the preceding examples, wherein the control unit (23) is operatively connected to the drive unit (3), the first pivot joint (5), the second pivot joint (6), the linear actuator (7), the rotary motor (9), the electric motor, the hydraulic system and / or the stepper motor.

[0166] Example 51: A marine propulsion system (1) as described in any of the preceding examples, wherein the drive unit (3) is configured to be used as a bathing ladder in the swimming mode.

[0167] Example 52: A ship propulsion system (1) as described in any of the preceding examples, wherein the lower part (21) is connected to the upper part (20) in a 360-degree rotatable manner.

[0168] Example 53: A ship propulsion system (1) as described in any of the preceding examples, further comprising: two or more drive units (3), each drive unit (3) comprising an upper portion (20) and a lower portion (21), the upper portion (20) being pivotable relative to the ship (100), and the lower portion (21) being rotatably connected to the upper portion (20), the lower portion (21) comprising one or more propellers (13a, 13b), wherein the control unit (23) is configured to rotate the lower part (21) to a position in which the one or more propellers (13a, 13b) face aft relative to the vessel in response to receiving a beach mode activation message from the input unit (22), and / or wherein the control unit (23) is configured to rotate the lower part (21) to a position in which the one or more propellers (13a, 13b) face aft relative to the vessel in response to receiving a swim mode activation message from the input unit (22), and / or wherein the control unit (23) is configured to rotate the lower part (21) to a position in which the one or more propellers (13a, 13b) face at least forward and at least 90 degrees compared to the aft facing position of the one or more propellers (13a, 13b) in response to receiving a swim mode activation message from the input unit (22).

[0169] Example 54: The ship propulsion system (1) as described in Example 53, wherein the control unit (23) is configured to cause each lower part (21) to rotate in the same direction or in opposite directions.

[0170] Example 55: A ship (100) comprising a ship propulsion system (1) as described in any of the preceding examples.

[0171] Example 56: The vessel (100) of Example 55, further comprising a bathing platform (103).

[0172] Example 57: The vessel (100) of Examples 55 and / or 56, further comprising a transom (101).

[0173] Example 58: A method of operating a marine propulsion system (1) as described in any one of Examples 1 to 54, comprising:

[0174] - providing a ship propulsion system (1) as described in any one of Examples 1 to 54 on a ship (100),

[0175] - receiving a start message indicating an operating mode of the drive unit (3),

[0176] - controlling the drive unit (3) based on the start message,

[0177] - Receive Beach Mode activation notification,

[0178] - rotating the lower portion (21) to a position in which the one or more propellers (13a, 13b) face aft relative to the vessel in response to receiving the beach mode activation message, and / or

[0179] - Receive swimming mode activation notification,

[0180] - in response to receiving the swim mode activation message, rotating the lower part 21 to a position in which the one or more propellers 13a, 13b face at least forward and at a minimum of 90 degrees compared to a stern facing position of the one or more propellers.

[0181] (13a, 13b).

[0182] Example 56: A method as described in Example 55, whereby the start message is initiated by an operator or a captain, and / or is an automatically generated start message.

[0183] Example 57: The method as described in Example 55 and / or 56, further comprising

[0184] in response to receiving the beach mode activation message, causing the drive unit to enter a reduced draft operating mode, and / or

[0185] In response to receiving a swim mode activation message, the drive unit is brought into a maximum draft position.

[0186] The terms used herein are only for the purpose of describing specific aspects and are not intended to limit the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular forms "a" and "the" are intended to include the plural forms as well. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It should also be understood that the terms "include" and / or "comprising" when used herein indicate the presence of stated features, integers, actions, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, actions, steps, operations, elements, parts and / or their groups.

[0187] It should be understood that although the terms first, second, etc. can be used to describe various elements in this article, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the present disclosure, the first element can be referred to as the second element, and similarly, the second element can be referred to as the first element.

[0188] Relative terms such as "below" or "above" or "upper" or "lower" or "horizontal" or "vertical" may be used herein to describe the relationship of one element to another element, as shown in the figures. It should be understood that these terms and those discussed above are intended to cover different device orientations in addition to the orientations depicted in the figures. It should be understood that when an element is referred to as being "connected" or "coupled" to another element, the element may be directly connected or directly coupled to the other element, or there may be intervening elements. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements.

[0189] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. It should also be understood that, unless otherwise clearly defined herein, the terms used herein should be interpreted as meanings consistent with their meanings in the context of this specification and the relevant art, and should not be interpreted in an idealized or overly formal sense.

[0190] It should be understood that the present disclosure is not limited to the aspects described above and shown in the accompanying drawings; rather, those skilled in the art will recognize that many changes and modifications may be made within the scope of the present disclosure and the appended claims. In the drawings and description, various aspects have been disclosed for illustrative purposes only and not for limiting purposes, and the scope of the disclosure is set forth in the appended claims.

Claims

1. A ship propulsion system (1) for a ship (100), comprising: - a drive unit (3), comprising an upper part (20) and a lower part (21), the upper part (20) being pivotable relative to the vessel and the lower part (21) being rotatably connected to the upper part (20), the lower part comprising one or more propellers (13a, 13b), - an input unit (22) configured to receive a start message indicating an operating mode of the drive unit (3), - a control unit (23) operatively connected to the drive unit (3) and the input unit (22), the control unit (23) being configured to control the drive unit (3) based on the start message received from the input unit (22), in, The control unit (23) is configured to rotate the lower part (21) to a position in which the one or more propellers (13a, 13b) face aft relative to the vessel in response to receiving a beach mode activation message from the input unit (22), and / or The control unit (23) is configured to rotate the lower part (21) to a position in which the one or more propellers (13a, 13b) at least face forward and have a minimum of 90 degrees compared to a stern-facing position of the one or more propellers (13a, 13b) in response to receiving a swimming mode activation message from the input unit (22).

2. A ship propulsion system (1) according to claim 1, wherein the control unit (23) is configured to cause the drive unit (3) to enter a reduced draft operation mode in response to receiving a beach mode activation message from the input unit (22), and / or wherein the control unit (23) is configured to cause the drive unit to enter a maximum draft position in response to receiving a swimming mode activation message from the input unit (22).

3. The marine propulsion system (1) according to claim 1, wherein when the control unit (23) receives the beach mode activation message, the drive unit (3) moves upward to the reduced draft position.

4. The ship propulsion system (1) according to claim 1, wherein when the control unit (23) receives the swimming mode start message, the drive unit (3) moves downward to the maximum draft position.

5. The ship propulsion system (1) according to claim 1, wherein the start message is initiated by an operator or a captain, and / or is an automatically generated start message.

6. The marine propulsion system (1) of claim 5, wherein the automatically generated start-up message is sensor data obtained from one or more sensors (24).

7. The ship propulsion system (1) according to claim 5, wherein the operator or the captain initiates the beach mode activation message at the input unit (22), and / or the operator or the captain initiates the swimming mode activation message at the input unit (22).

8. The marine propulsion system (1) of claim 6, wherein the one or more sensors (24) are configured to detect a draft around the marine vessel (100) and to initiate the beach mode activation message based on the detected draft, and / or wherein, The one or more sensors (24) are configured to detect obstacles and / or humans or animals around the watercraft and to initiate the swim mode activation message based on the detection.

9. The marine propulsion system (1) according to claim 1, wherein the drive unit (3) is locked in the swim mode until the operator or the captain deactivates the swim mode activation message.

10. The ship propulsion system (1) according to claim 8, wherein the sensor (24) is a lidar sensor, a sonar sensor, a speed recorder, a torque sensor, a depth sensor, a basic on / off switch sensor, etc.

11. The marine propulsion system (1) of claim 1, wherein the drive unit (3) is configured to be started with a special confirmation operation (such as unlocking by a physical or digital key) when in the swimming mode.

12. The marine propulsion system (1) of claim 1, wherein when in the swimming mode, the one or more propellers (13a, 13b) are locked such that they cannot rotate.

13. The marine propulsion system (1) of claim 1, wherein when the swim mode activation message is deactivated, the lower portion (21) rotates to its intended position before allowing the one or more propellers (13a, 13b) to rotate.

14. A ship propulsion system (1) as claimed in claim 1, wherein the control unit (23) is configured to issue a notification that it is safe to swim around the drive unit (3) when the lower part (21) of the drive unit (3) has been rotated to a position in which the one or more propellers (13a, 13b) are at least facing forward and have a minimum of 90 degrees compared to the stern-facing position of the one or more propellers (13a, 13b) and the one or more propellers (13a, 13b) are locked.

15. A ship propulsion system (1) according to claim 1, wherein the drive unit (3) includes one or more unit sensors (25), which are configured to detect the position of the lower part (21) of the drive unit (3) and / or the position of the one or more propellers (13a, 13b).

16. The ship propulsion system (1) according to claim 1, wherein the drive unit (3) is connected to the transom (101) of the ship via a transom bracket (2).

17. A marine propulsion system (1) according to claim 16, wherein the drive unit (3) is arranged to be movable relative to the transom bracket (2) for moving the drive unit (3) into and out of the water, The drive unit (3) is connected to the transom support (2) via a connecting arm (4), wherein the connecting arm has a first pivot joint (5) connected to the transom support (2) and a second pivot joint (6) connected to the drive unit (3), The drive unit (3) is configured to be moved into and out of water by pivoting the connecting arm (4) around the first pivot joint (5) or the drive unit (3) around the second pivot joint (6) or the connecting arm (4) and the drive unit (3) around both pivot joints (5, 6).

18. A ship (100) comprising the ship propulsion system (1) according to any one of claims 1 to 17.

19. A method of operating a marine propulsion system (1) according to any one of claims 1 to 17, comprising: - providing a ship propulsion system (1) according to any one of claims 1 to 17 on a ship (100), - receiving a start message indicating an operating mode of the drive unit (3), - controlling the drive unit (3) based on the start message, - Receive Beach Mode activation notification, - rotating the lower portion (21) to a position in which the one or more propellers (13a, 13b) face aft relative to the vessel in response to receiving the beach mode activation message, and / or - Receive swimming mode activation notification, - in response to receiving the swim mode activation message, rotating the lower part 21 to a position in which the one or more propellers 13a, 13b face at least forward and at a minimum of 90 degrees compared to a stern facing position of the one or more propellers.

20. The method of claim 19, further comprising in response to receiving the beach mode activation message, causing the drive unit to enter a reduced draft operating mode, and / or In response to receiving a swim mode activation message, the drive unit is brought into a maximum draft position.

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