Echo sounder for polar vessels, its mounting structure, and the vessel equipped with the echo sounder.

Abstract

A polar vessel is disclosed. The polar vessel includes: a keel protruding from the lower part of the vessel; and an echo sounder mounted on the keel, configured to transmit ultrasonic pulses toward the seabed, receive ultrasonic pulses reflected back from the seabed, and calculate the depth of the seabed based on the time required for the ultrasonic pulses to return.

Description

Technical Field

[0001] The present invention relates to an echo sounder for polar vessels, and more specifically, to an echo sounder unaffected by bubbles that move to the bottom of the hull due to the unique hull shape of polar vessels, its mounting structure, and a vessel including the echo sounder. Background Technology

[0002] An echo sounder is a device installed on the bottom of a ship that measures water depth by emitting ultrasonic pulses towards the seabed and measuring the time it takes for the ultrasonic pulses to reflect back from the seabed. When bubbles generated around the hull due to ship movement or other factors pass above the echo sounder, the sounder may suffer interference from the transmission and reception of ultrasonic pulses, making its normal operation difficult.

[0003] Therefore, to avoid interference from air bubbles trapped below the waterline caused by waves at the waterline, it is generally recommended to mount the echo sounder on the horizontal surface at the very foremost part of the bow. Furthermore, for vessels equipped with bow thrusters, it is recommended to mount the echo sounder further forward than the bow thrusters to avoid their influence.

[0004] Meanwhile, the reduction of Arctic sea ice due to global warming has opened up a new shipping route in the Arctic, the Northern Sea Route, which has attracted widespread attention. For South Korea, whose trade volume relies on maritime trade for more than 99% of its total volume, transporting goods via the Northern Sea Route represents a valuable opportunity to create new added value.

[0005] Therefore, research is underway on various polar environments, including using satellites to collect sea ice information and using research icebreakers to acquire data, in order to establish safe navigation methods and identify the best routes for ships navigating the Northern Sea Route. Summary of the Invention

[0006] Technical issues

[0007] Recently, the applicant has built and operated a vessel, specifically a polar vessel, in which the angle between the bow profile and the waterline is 90 degrees or less. As a result, the applicant discovered that echo sounders installed on icebreakers capable of navigating polar regions cannot function properly due to the unique bow hull shape of the vessels, leading to this invention.

[0008] Specifically, because the bow hull of polar vessels is designed with the tangent of the hull cross-section inclined at a small angle relative to the waterline—a design consideration for icebreaking performance, i.e., the ability to break through ice—the hulls of polar vessels are wider and flatter than those of typical merchant ships. This allows bubbles generated by bow waves to exhibit a pronounced tendency to flow along the sloping hull surface towards the bottom of the hull. The applicant has found that, due to this flow characteristic, the volume of bubbles flowing along the bottom surface of the hull increases with increasing ship speed, impairing the operation of echo sounders mounted at the bow bottom.

[0009] One aspect of the present invention is to provide an echo sounder for measuring water depth, which is installed on the bottom of the hull of a polar vessel, a method for installing the sounder, a mounting structure thereof, and a vessel including the sounder.

[0010] Another aspect of the invention is to provide an echo sounder, its mounting structure, and a ship including the echo sounder, which is unaffected by bubbles that move to the bottom of the hull at the bow of a polar vessel.

[0011] A further aspect of the invention is to provide an echo sounder that does not interfere with the operation of polar vessels, its mounting structure, and a vessel including the same.

[0012] Another aspect of the invention is to provide an echo sounder, its mounting structure, and a ship including the echo sounder, which can be implemented with minimal modifications to the typical structure of a polar vessel.

[0013] Technical solution

[0014] According to one aspect of the invention, a polar vessel may include a keel and an echo sounder. The keel may project from the lower part of the vessel. The echo sounder may be disposed inside the keel. The echo sounder may emit ultrasonic pulses toward the seabed. The echo sounder may receive ultrasonic pulses reflected back from the seabed. The echo sounder may calculate the depth of the seabed based on the time required for the ultrasonic pulses to return.

[0015] Specifically, an echo sounder may include a transmitter body and a support. The support couples the transmitter body to the lower part of the keel.

[0016] In addition, the keel may include a keel body and keel through-holes. Keel through-holes may be formed in the lower part of the keel body. Keel through-holes provide channels for ultrasonic pulses emitted and received by the echo sounder to propagate outside the keel body.

[0017] For example, the lower end of the keel is positioned 0.5 m or less from the bottom of the boat in the downward direction.

[0018] In addition, the lower end of the echo sounder can be placed flush with the lower end of the keel in the vertical direction of the ship.

[0019] The keel can be formed on the bow side of the ship.

[0020] For example, the bottom of a ship's hull can be formed into a flat shape.

[0021] The flat area formed at the bottom of the ship can occupy 50% to 100% of the bottom width of the ship in its transverse cross section.

[0022] According to another aspect of the invention, an echo sounder is used in polar vessels and is installed in the keel protruding from the lower part of the vessel.

[0023] According to another aspect of the invention, a vessel, wherein the angle (β) between the waterline and the bow profile at the point where the waterline intersects the bow profile (forward perpendicular: FP) ranges from 10 degrees to 70 degrees, includes a keel and an echo sounder. The keel may project from the lower part of the vessel. The echo sounder may be mounted within the keel.

[0024] Beneficial effects

[0025] Embodiments of the present invention provide a polar vessel, comprising: a keel protruding from the lower part of the vessel; and an echo sounder disposed inside the keel and configured to emit ultrasonic pulses toward the seabed, receive ultrasonic pulses reflected back from the seabed, and calculate the depth of the seabed based on the time required for the ultrasonic pulses to return. This configuration ensures that the echo sounder can stably measure water depth without being affected by bubbles moving along the bow of the vessel.

[0026] In the polar vessel according to the invention, the echo sounder may include: a transmitter body; and a support for coupling the transmitter body to the lower part of the keel. This configuration ensures that the transmitter body can be separated from the keel for repair or replacement if necessary.

[0027] In the polar vessel according to the invention, the keel may include: a keel body; and a keel through-hole formed in the lower part of the keel body to provide a channel for ultrasonic pulses emitted and received by an echo sounder to propagate beyond the keel body. This configuration ensures that an echo sounder disposed inside the keel body can calculate the seabed depth by measuring the travel time of ultrasonic pulses reflected from the seabed.

[0028] In the polar vessel according to the invention, the lower end of the keel can be positioned in the downward direction of the vessel at a distance of 0.5 m or less from the bottom of the vessel. This configuration allows the keel to avoid encountering airflow while minimizing drag caused by the keel during vessel navigation.

[0029] In the polar vessel according to the invention, the lower end of the echo sounder can be placed flush with the lower end of the keel in the vertical direction of the vessel. This configuration prevents the echo sounder from protruding beyond the keel, which would otherwise increase the vessel's drag or damage the echo sounder. Furthermore, this configuration prevents the echo sounder from being recessed into the keel, which would otherwise allow the keel to interfere with the transmission and reception of ultrasonic pulses.

[0030] In the polar vessel according to the invention, the keel can be formed on the bow side. This configuration allows for water depth measurement at the bow, thereby detecting approaching obstacles in the vessel's path.

[0031] Embodiments of the present invention provide an echo sounder intended for use on polar vessels, wherein the echo sounder can be mounted within a keel projecting from the lower part of the vessel. This configuration ensures that the echo sounder can stably measure water depth without being affected by bubbles moving along the bow of the polar vessel.

[0032] Embodiments of the present invention provide a vessel in which the angle (β) between the waterline and the bow profile at the point where the waterline intersects the bow profile (bow perpendicular: FP) ranges from 10 degrees to 70 degrees. The vessel includes: a keel projecting from the lower part of the vessel; and an echo sounder mounted within the keel. This configuration ensures that the echo sounder can stably measure water depth without being affected by bubbles moving along the bow of the polar vessel.

[0033] In this context, the term "ship" is intended to include not only polar vessels but also general merchant ships. Attached Figure Description

[0034] Figure 1 This is a side view of a polar vessel, showing the bow hull shape and the behavior of the bubbles.

[0035] Figure 2 This is a perspective view of the installation structure of an echo sounder on a polar vessel according to an embodiment of the present invention.

[0036] Figure 3 This is a side view of the installation structure of an echo sounder on a polar vessel according to an embodiment of the present invention.

[0037] Figure 4 According to one embodiment Figure 3 An enlarged longitudinal cross-sectional view of the stern fin.

[0038] Figure 5 According to another embodiment Figure 3 An enlarged cross-sectional view of the stern fin.

[0039] Figure 6 According to another embodiment Figure 3 An enlarged longitudinal cross-sectional view of the stern fin.

[0040] Figure 7This is a side view of the mounting structure of an echo sounder for a polar vessel according to another embodiment of the present invention.

[0041] Figure 8 This is a side view of the mounting structure of an echo sounder for a polar vessel according to another embodiment of the present invention.

[0042] Figure 9 This is a front view of the mounting structure of an echo sounder for a polar vessel according to another embodiment of the present invention.

[0043] Figure 10 This is a side view of the mounting structure of an echo sounder for a polar vessel according to another embodiment of the present invention.

[0044] Figure 11 This is a bottom view of the mounting structure of the echo sounder for a polar vessel according to another embodiment of the present invention.

[0045] Figure 12 yes Figure 10 An enlarged longitudinal section view of the keel.

[0046] Figure 13 This is a block flowchart illustrating the installation method of a marine echo sounder according to the present invention.

[0047] Figure 14 It is shown Figure 13 Analysis view of the fluid analysis steps.

[0048] Figure 15 It is shown Figure 13 A photo view of the distribution recognition steps.

[0049] Figure 16 The diagram shows transverse cross-sectional views of different types of ships, taken at a point corresponding to 10% of the ship's length from the bow towards the stern.

[0050] Figure 17 Longitudinal cross-sectional views showing the bow profiles of different types of ships.

[0051] Figure 18 This is a transverse cross-sectional view of the polar vessel according to the present invention, taken at a position corresponding to 10% of the vessel's length from the bow towards the stern.

[0052] Figure 19 This is a longitudinal cross-sectional view of the bow profile of the polar vessel according to the present invention. Detailed Implementation

[0053] To fully understand the operational advantages of the present invention and the objectives achieved by implementing the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the invention and their description.

[0054] Hereinafter, the features and effects of exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that throughout the specification and drawings, the same elements will be designated by the same reference numerals.

[0055] Here, the forward part of the hull refers to the bow direction, and the aft part refers to the stern direction.

[0056] Here, the upper part of the hull refers to the upper deck of the hull, and the side surface of the hull refers to the outer side plating of the hull.

[0057] Here, the length of the hull refers to the distance from bow to stern in a direction parallel to the upper deck of the hull.

[0058] Here, the hull width refers to the distance from one side of the outer plating to the other side of the outer plating in a direction parallel to the upper deck of the hull.

[0059] Here, the height of the hull refers to the distance from the upper deck of the hull to the bottom of the hull in a direction perpendicular to the upper deck.

[0060] Here, transverse section refers to the section of the hull taken in the transverse direction of the hull.

[0061] Here, longitudinal section refers to the section of the hull taken in the longitudinal direction of the hull.

[0062] Figure 1 This is a side view of a polar vessel, showing the bow hull shape and the behavior of the bubbles.

[0063] Reference Figure 1 The bow hull shape of the polar vessel (10) can be designed such that the angle between the bow and the waterline is smaller than that of a typical vessel. This is to take into account icebreaking performance, i.e. the ability to move forward while breaking ice. Therefore, the air bubbles (20) generated at the waterline can move along the inclined surface of the bow to the bottom of the vessel (10).

[0064] An echo sounder is mounted on a horizontal surface at the bottom of the vessel (10) and configured to transmit ultrasonic pulses toward the seabed and receive ultrasonic pulses reflected back from the seabed. The echo sounder calculates the depth of the seabed by measuring the time required for the transmitted ultrasonic pulses to return.

[0065] However, in a polar vessel (10), bubbles (20) that move to the bottom of the vessel (10) can interfere with the transmission and reception of ultrasonic pulses by the echo sounder as they pass around it. If these problems are only discovered after the construction of the vessel (10), resolving these issues related to the operation of the echo sounder becomes very challenging. Therefore, there is a need for an echo sounder for a polar vessel that is unaffected by bubbles moving to the bottom of the hull, a vessel including the echo sounder, a method for determining the mounting location of the echo sounder, a mounting structure for the echo sounder, and a method for mounting the echo sounder.

[0066] Figure 2 This is a perspective view of the mounting structure of an echo sounder for a polar vessel according to an embodiment of the present invention. Figure 3 This is a side view of the mounting structure of the echo sounder for a polar vessel according to this embodiment. Figure 4 According to one embodiment Figure 3 An enlarged longitudinal cross-sectional view of the stern fin.

[0067] Reference Figures 1 to 4 The mounting structure for the echo sounder for a polar vessel according to this embodiment may include an echo sounder (100) and a stern fin (200). The echo sounder (100) may be mounted on the stern fin (200) formed on the stern of the polar vessel (10), preferably inside the stern fin (200), to stably measure water depth without being affected by bubbles (20) moving along the bow of the polar vessel (10).

[0068] An echo sounder (100) may be disposed in the stern fin (200), preferably inside the stern fin (200). The echo sounder (100) can emit ultrasonic pulses toward the seabed. The echo sounder (100) can receive ultrasonic pulses reflected back from the seabed. Therefore, the echo sounder (100) can calculate the depth of the seabed based on the time required for the ultrasonic pulses to return.

[0069] The vessel (10) may have multiple stern fins (200). Here, an echo sounder (100) may be installed in only one of the stern fins (200). This configuration ensures accurate measurement of water depth by preventing cross-interference between the individual ultrasonic pulses emitted from the multiple echo sounders (100).

[0070] Typically, echo sounders (100) are susceptible to malfunctions caused by air bubbles (20) carried below the waterline by waves generated at the waterline. Therefore, echo sounders (100) are usually installed at the bottom of the bow of the ship.

[0071] Furthermore, when the ship (10) is equipped with a bow thruster (not shown), the echo sounder (100) can be installed further forward than the bow thruster to avoid its influence. Additionally, to address issues caused by air bubbles (20), the ship (10) can have a box-shaped keel structure (not shown) formed in its lower part, within which the echo sounder (100) is installed.

[0072] However, since the polar vessel (10) is designed with its bow tilted at a small angle relative to the waterline to account for icebreaking performance, the echo sounder (100) can still be affected by air bubbles (20) even when it is mounted at the bow. Furthermore, the use of a box keel structure may lead to adverse effects, including increased hull drag and reduced hull structural strength.

[0073] Reference Figures 16 to 19 For the polar vessel according to the invention, the angle formed between the bow and the bottom of the hull in a transverse section taken at a position corresponding to 10% of the ship's length in the direction from the bow end toward the stern (i.e., as shown in the figure) is... Figure 18 The angle (α) shown is relatively shallow, measured at 70 degrees or less, preferably 50 degrees or less, to achieve icebreaking. In contrast, for general vessels, the angle formed between the waterline and the bow profile at the bow perpendicular in the longitudinal section of the bow is 90 degrees or greater, or the bow has a bulbous bow protruding from it.

[0074] Furthermore, for icebreakers operating in polar regions, such as Figure 19 The angle (β) shown for measurement (i.e., the angle formed between the waterline and the bow profile at the point where the waterline intersects the bow profile (bow perpendicular: FP)) is relatively shallow, measured at 70 degrees or less, preferably 50 degrees or less, and more preferably 45 degrees or less. However, the lower limit of the angle (β) can be appropriately selected taking into account ship handling, hull construction, icebreaking performance, etc. The desired lower limit of the angle (β) is 10 degrees or greater, excluding locally flat areas (0 degrees).

[0075] In ships (10) with an angle (β) of 70 degrees or less, preferably 50 degrees or less, and particularly 45 degrees or less, bubbles (20) tend to flow to the bottom of the hull. Therefore, the echo sounder (100) according to an embodiment of the invention provides a significant advantage for such ships (10). In general merchant ships, the angle (β) is typically around 90 degrees.

[0076] The protruding structure formed at the bow is called a "bulb" or "bulb bow," and icebreakers operating in polar regions may lack a bulbous bow. Therefore, in such vessels with a shallow bow angle as described above, bubbles generated at the bow tend to flow along the bottom surface of the bow to the echo sounder, interfering with its function.

[0077] The echo sounder (100) may include a transmitter body (110) and a support (120). The transmitter body (110) may be coupled to the interior of the stern fin (200) via the support (120). Therefore, the transmitter body (110) may be detached from the stern fin (200) for repair or replacement if necessary.

[0078] The bracket (120) couples the generator body (110) to the lower part of the stern fin (200). The generator body (110) can be mechanically coupled to the bracket (120) using bolts / nuts. Alternatively, the generator body (110) can be coupled to the bracket (120) via an interference fit. Therefore, the generator body (110) may be detachably coupled to the bracket (120).

[0079] The bracket (120) can be mechanically fastened to the lower part of the stern fin (200) using bolts / nuts. Alternatively, the bracket (120) can be welded to the lower part of the stern fin (200). Thus, the bracket (120) can be securely fixed to the lower part of the stern fin (200).

[0080] It should be understood that the present invention is not limited to what has been shown or described above. These are merely exemplary and are not intended to limit the scope of the invention.

[0081] Reference Figures 1 to 4 According to this embodiment, the stern fin (200) can be formed at the lower part of the stern of the ship (10). Therefore, the stern fin (200) can improve the propulsion efficiency of the ship (10)'s engine. The stern fin (200) may include a stern fin body (210) and a stern fin through-hole (220).

[0082] A stern fin through-hole (220) may be formed at the lower part of the stern fin body (210). The stern fin through-hole (220) provides a channel for ultrasonic pulses emitted and received by the echo sounder (100) to propagate beyond the stern fin body (210). Therefore, the echo sounder (100), located inside the stern fin body (210), can calculate the depth of the seabed by measuring the travel time of the ultrasonic pulses reflected from the seabed.

[0083] The lower end of the echo sounder (100) can be placed flush with the lower end of the stern fin (200) in the height direction of the ship. This configuration prevents the echo sounder (100) from protruding outside the stern fin (200), which would otherwise lead to increased drag on the ship (10) or damage to the echo sounder (100). In addition, this configuration prevents the echo sounder (100) from being recessed into the stern fin (200), which would otherwise allow the echo sounder (100) to interfere with the transmission and reception of ultrasonic pulses.

[0084] The lower part of the echo sounder (100) may have the same shape as the stern fin through-hole (220). This configuration prevents the formation of a gap between the echo sounder (100) and the stern fin through-hole (220). Therefore, seawater can be prevented from entering the interior of the stern fin (200).

[0085] A sealing component (not shown) can be inserted between the lower part of the echo sounder (100) and the stern fin through-hole (220). This configuration more reliably prevents seawater from entering the interior of the stern fin (200).

[0086] It should be understood that the present invention is not limited to what has been shown or described above. These are merely exemplary and are not intended to limit the scope of the invention.

[0087] The technical advantages provided by the echo sounder mounting structure for polar vessels according to this embodiment are as follows.

[0088] Since the polar vessel (10) is designed with its bow tilted at a small angle relative to the waterline to take icebreaking performance into account, the echo sounder (100) can be affected by bubbles (20) moving from the bow toward the stern along the bottom surface of the ship, even when the echo sounder is mounted at the front of the bow.

[0089] Furthermore, the polar vessel (10) may have a prominent stern fin (200). This type of stern fin (200) is unaffected by the movement of bubbles (20) during the vessel's (10) voyage. Therefore, an echo sounder (100) may be mounted on the surface or inside the stern fin (200).

[0090] This configuration ensures that the echo sounder (100) can operate without being disturbed by bubbles (20) generated during the ship's (10) voyage, thus enabling accurate measurement of the seabed depth.

[0091] Figure 5 It is based on and Figure 3 An enlarged transverse cross-sectional view of the stern fin in another different embodiment. Figure 6 This is an enlarged longitudinal cross-sectional view of the stern fin according to this embodiment.

[0092] Reference Figures 1 to 5 According to this embodiment, the stern fin (200) may include a compartment (230) formed therein. The compartment (230) may be a space formed inside the stern fin (200). Personnel can enter or leave the compartment (230) through passages formed inside the ship (10). The compartment (230) may include a door (240), a ladder (250), and a drain outlet (260).

[0093] When maintenance of the echo sounder (100) is required after the ship (10) has completed its voyage or during the voyage, personnel can access the echo sounder (100) via a door (240) and a ladder (250). One advantage of mounting the echo sounder (100) inside the stern fin (200) is that it eliminates the need for a separate compartment inside the ship (10) for the installation and operation of the echo sounder (100), as the compartment (230) formed inside the stern fin (200) can be utilized as space for the installation and operation of the echo sounder (100).

[0094] A door (240) may be formed at the upper part of the compartment (230) to be openable and closable. Thus, personnel can enter the interior of the compartment (230). Preferably, the door (240) is coupled to the compartment (230) by a hinge (not shown) such that the door (240) swings outward toward the compartment (230) when open.

[0095] A ladder (250) may be formed on one side of the compartment (230). Thus, personnel entering the compartment (230) through the door (240) can descend to the bottom of the compartment (230) via the ladder (250). The ladder (250) may be formed of a corrosion-resistant and rigid material to withstand corrosion and damage caused by seawater entering the compartment (230).

[0096] A drain outlet (260) may be formed at the bottom of the compartment (230). The drain outlet (260) allows seawater entering the compartment (230) to be discharged to the outside of the compartment (230). Therefore, personnel can enter the compartment (230) to operate or repair the echo sounder (100).

[0097] Seawater entering the compartment (230) can be discharged to the outside of the ship (10) through the drain (260). Alternatively, seawater entering the compartment (230) can be moved to another space inside the ship (10) through the drain (260).

[0098] The technical advantages provided by the stern fin (200) according to this embodiment are as follows.

[0099] The vessel (10) may be provided with a separate compartment to protect the echo sounder (100) from accidents that may occur during the voyage of the vessel (10), such as water ingress. This separate compartment may be sized to ensure that personnel can access and perform necessary maintenance or repair work on the echo sounder (100).

[0100] When the echo sounder (100) is installed in the central stern fin (200) formed at the stern of the ship (10), the need to form a separate compartment in the ship (10) is eliminated, since the central stern fin (200) itself serves as a dedicated compartment for the echo sounder (100).

[0101] Therefore, the costs associated with forming individual compartments can be reduced, while more efficient space utilization can be achieved within the ship (10).

[0102] Figure 7 This is a side view of the installation structure of a polar marine echo sounder according to another embodiment of the present invention.

[0103] Reference Figures 1 to 7 The polar ship echo sounder mounting structure according to this embodiment may include an echo sounder (100) and a plow (300). The echo sounder (100) may be installed inside a fin-shaped plow (300) formed at the bow of the ship (10) to stably measure water depth without being affected by bubbles (20) moving along the bow of the polar ship (10).

[0104] When navigating in ice-covered waters, polar vessels often encounter a phenomenon where broken ice flows down to the bow and accumulates on the bottom surface of the bow instead of flowing towards the stern, resulting in increased drag. A plow (300) formed as a protrusion from the lower part of the bow profile prevents this ice accumulation, thereby mitigating the increase in drag. The shape of the plow (300) can be designed taking into account both icebreaking performance and hull drag during navigation in open water.

[0105] Although rarely used on general merchant ships, the plow (300) can be used on polar vessels to provide a prominent hull form, thereby ensuring the smooth flow of ice as described above. The plow (300) includes a strength-reinforcing member formed therein and a flat area formed on its lower surface. When the echo sounder (100) is mounted on this flat area, the mounting position of the echo sounder (100) is moved further forward in the bow direction, thereby reducing errors during the operation of the echo sounder (100) because the air bubble (20) flows behind the plow (300) and therefore does not pass through this moved position.

[0106] The echo sounder (100) can be mounted on or inside the plow (300). The echo sounder (100) can emit ultrasonic pulses toward the seabed. The echo sounder (100) can receive ultrasonic pulses reflected back from the seabed. Therefore, the echo sounder (100) can calculate the depth of the seabed based on the time required for the ultrasonic pulses to return.

[0107] The echo sounder (100) may include a transmitter body (110) and a support (120). The transmitter body (110) may be coupled to the interior of the plow (300) via the support (120). Therefore, the transmitter body (110) may be separated from the plow (300) for maintenance or replacement if necessary.

[0108] The bracket (120) couples the transmitter body (110) to the lower part of the plow (300). The transmitter body (110) can be mechanically coupled to the bracket (120) using bolts / nuts. Alternatively, the transmitter body (110) can be coupled to the bracket (120) via an interference fit. Therefore, the transmitter body (110) can be detachably coupled to the bracket (120).

[0109] The bracket (120) can be mechanically fastened to the lower part of the plow (300) using bolts / nuts. Alternatively, the bracket (120) can be welded to the lower part of the plow (300). Thus, the bracket (120) can be securely fixed to the lower part of the plow (300).

[0110] The echo sounder (100) can be further installed inside the stern fin (200) of the ship (10). Therefore, the echo sounder (100) can be installed at the bow and stern of the ship (10).

[0111] Reference Figures 1 to 7 According to this embodiment, the plow (300) can be formed on the lower part of the bow of the ship (10). The echo sounder (100) can be installed inside the plow (300) formed in a fin shape on the bow of the ship (10) to stably measure the water depth without being affected by the bubble (20) moving along the bow of the polar ship (10).

[0112] In addition, the plow (300) can enhance the icebreaking performance of the ship (10). The plow (300) may include a plow body (310) and a plow hole (320).

[0113] A plow hole (320) may be formed in the lower part of the plow body (310). The plow hole (320) provides a channel for ultrasonic pulses emitted and received by the echo sounder (100) to propagate outside the plow body (310). Therefore, the echo sounder (100), located inside the plow body (310), can calculate the depth of the seabed by measuring the travel time of the ultrasonic pulses reflected from the seabed.

[0114] The lower end of the echo sounder (100) can be placed flush with the lower end of the plow (300) in the height direction of the ship. This configuration prevents the echo sounder (100) from protruding outside the plow (300), which would otherwise increase the drag of the ship (10) or damage the echo sounder (100). In addition, this configuration prevents the echo sounder (100) from being recessed into the plow (300), which would otherwise allow the plow (300) to interfere with the transmission and reception of ultrasonic pulses.

[0115] The lower part of the echo sounder (100) can be formed to have the same shape as the plowshare hole (320). This configuration prevents a gap from forming between the echo sounder (100) and the plowshare hole (320). Therefore, seawater can be prevented from entering the interior of the plow (300). A sealing member (not shown) can be inserted between the lower part of the echo sounder (100) and the plowshare hole (320). This configuration more reliably prevents seawater from entering the interior of the plow (300).

[0116] It should be understood that the present invention is not limited to what has been shown or described above. These are merely exemplary and are not intended to limit the scope of the invention.

[0117] The technical advantages provided by the polar marine echo sounder mounting structure according to this embodiment are as follows.

[0118] Because the polar vessel (10) is designed with a smaller angle between its bow and the waterline than that of a conventional vessel, the echo sounder (100) will be affected by air bubbles (20) even when mounted on the horizontal bottom surface at the bow, considering its icebreaking performance. However, when the echo sounder (100) is mounted at the bow, the influence of water depth can be identified more quickly during the vessel's (100's) navigation compared to when it is mounted at the stern.

[0119] Therefore, a protruding plow (300) can be formed on the bow of the ship (10). The horizontal bottom surface of this type of plow is positioned further forward in the bow direction, so it is not affected by the movement of the bubble (20) during the navigation of the ship (10). Therefore, an echo sounder (100) can be installed inside the horizontal bottom surface of the plow (300).

[0120] Thus, when the echo sounder (100) is installed inside the plow (300), the echo sounder (100) can operate without interference from bubbles (20) generated during the ship's (10) navigation, thereby enabling accurate measurement of the seabed depth. Furthermore, combining the installation of one echo sounder (100) inside the plow at the bow with the installation of another echo sounder (100) at the stern is more advantageous from a collision avoidance perspective during actual navigation, as it allows for the measurement of the water depth at the bow.

[0121] In other words, since the air bubbles (20) trapped below the bow can be dispersed by forming a plow (300) of a certain volume at the lower end of the bow, mounting the echo sounder (100) at the lower end of the plow (300) can prevent the echo sounder (100) from malfunctioning by eliminating the influence of the air bubbles (20) on the echo sounder (100). In addition, the plow (300) helps to enhance icebreaking performance by removing ice buildup on the bottom of the ship during icebreaking navigation.

[0122] Figure 8This is a side view of the mounting structure of a polar ship echo sounder according to another embodiment of the present invention.

[0123] Reference Figures 1 to 6 and Figure 8 According to this embodiment, the echo sounder mounting structure for polar vessels may include an echo sounder (100) and a plow (300). The echo sounder (100) may be installed inside the plow (300) which is formed in a fin shape on the bow of the vessel (10) to stably measure water depth without being affected by bubbles (20) moving along the bow of the polar vessel (10).

[0124] An echo sounder (100) may be installed inside the plow (300). The echo sounder (100) may emit ultrasonic pulses toward the seabed. The echo sounder (100) may receive ultrasonic pulses reflected back from the seabed. Therefore, the echo sounder (100) may calculate the depth of the seabed based on the time required for the ultrasonic pulses to return.

[0125] The echo sounder (100) may include a transmitter body (110) and a support (120). The transmitter body (110) may be coupled to the interior of the plow (300) via the support (120). Therefore, the transmitter body (110) may be separated from the plow (300) for repair or replacement if necessary.

[0126] The bracket (120) couples the transmitter body (110) to the lower part of the plow (300). The transmitter body (110) can be mechanically coupled to the bracket (120) using bolts / nuts. Alternatively, the transmitter body (110) can be coupled to the bracket (120) via an interference fit. Thus, the transmitter body (110) can be detachably coupled to the bracket (120).

[0127] The bracket (120) can be mechanically fastened to the lower part of the plow (300) using bolts / nuts. Alternatively, the bracket (120) can be welded to the lower part of the plow. Thus, the bracket (120) can be securely fixed to the lower part of the plow (300).

[0128] The echo sounder (100) can be further installed inside the stern fin (200) of the ship (10). Therefore, the echo sounder (100) can be installed at each of the bow and stern of the ship (10).

[0129] Reference Figures 1 to 6 and Figure 8 According to this embodiment, the plow (300) can be formed in the lower part of the bow of the ship (10). The cut-off structure can be formed in the bow profile. This configuration prevents the echo sounder (100) from malfunctioning when it is installed in a plow (300) without such a cut-off structure.

[0130] The echo sounder (100) needs to be mounted on a flat, horizontal surface. When the cut-off structure is formed in the bow profile, the bow-facing end of the cut-off horizontal surface is positioned further forward in the bow direction. Therefore, mounting the echo sounder (100) in the appropriate location reduces the risk of echo sounder malfunction by allowing the echo sounder to be positioned further away from bubble flow. The height and volume of the cut-off structure can be determined taking into account hull resistance during open water navigation and the interference between ice and the hull. When the cut-off structure is applied to the plow (300), although the height of the flat bottom area of ​​the plow (300) towards the upper deck increases, the mounting position of the echo sounder (100) is moved further forward in the bow direction, thereby further reducing the likelihood that the echo sounder (100) will encounter bubbles (20).

[0131] Furthermore, the plow (300) according to this embodiment has a smaller size than a plow (300) without a cutting structure, thereby reducing hull drag during the navigation of the ship (10). In addition, the plow (300) according to this embodiment can enhance the icebreaking performance of the ship (10). The plow (300) may include a plow body (310) and a plow hole (320).

[0132] A plow hole (320) may be formed in the lower part of the plow body (310). The plow hole (320) provides a channel for ultrasonic pulses emitted and received by the echo sounder (100) to propagate outside the plow body (310). Therefore, the echo sounder (100), located inside the plow body (310), can calculate the depth of the seabed by measuring the travel time of the ultrasonic pulses reflected from the seabed.

[0133] The lower end of the echo sounder (100) can be placed flush with the lower end of the plow (300) in the height direction of the ship. This configuration prevents the echo sounder (100) from protruding outside the plow (300), which would otherwise increase the drag of the ship (10) or damage the echo sounder (100). In addition, this configuration prevents the echo sounder (100) from being recessed into the plow (300), which would otherwise allow the plow (300) to interfere with the transmission and reception of ultrasonic pulses.

[0134] The lower part of the echo sounder (100) can be formed with the same shape as the plow hole (320). This configuration prevents the formation of a gap between the echo sounder (100) and the plow hole (320). Therefore, seawater can be prevented from entering the interior of the plow (300).

[0135] A sealing component (not shown) can be inserted between the lower part of the echo sounder (100) and the plow hole (320). This configuration more reliably prevents seawater from entering the interior of the plow (300).

[0136] It should be understood that the present invention is not limited to what has been shown or described above. These are merely exemplary and are not intended to limit the scope of the invention.

[0137] The technical advantages provided by the polar marine echo sounder mounting structure according to this embodiment are as follows.

[0138] The polar vessel (10) is designed with its bow tilted at a small angle relative to the waterline to take icebreaking performance into account. Therefore, even when the echo sounder (100) is mounted at the forward end of the bow, the echo sounder (100) can be affected by air bubbles (20).

[0139] Because the polar vessel (10) is designed with a smaller angle between its bow and the waterline than that of a conventional vessel to accommodate icebreaking performance, the echo sounder (100) may still be affected by air bubbles (20) even when mounted at the bow. However, when the echo sounder (100) is mounted at the bow, the influence of water depth can be identified more quickly during the vessel's (10) voyage compared to when it is mounted at the stern.

[0140] Therefore, a protruding plow (300) can be formed on the bow of the ship (10). This type of plow (300) is unaffected by the movement of the bubble (20) during navigation. Therefore, the echo sounder (100) can be installed inside the plow (300). Furthermore, by cutting the lower end of the plow (300) to move the installation position of the echo sounder (100) further forward in the bow direction, the normal operation of the echo sounder (100) can be ensured.

[0141] Furthermore, the plow (300) can be formed into a cut-off structure with a predetermined shape.

[0142] This configuration reduces the risk of echo sounder (100) malfunction that might occur when the echo sounder (100) is installed in a plow (300) without this cut-off structure. Furthermore, the plow according to this embodiment has a smaller size than a plow (300) without the cut-off structure, thereby reducing drag during the navigation of the ship (10). Moreover, the echo sounder mounting structure according to this embodiment ensures accurate measurement of seabed depth by allowing the echo sounder (100) to operate without interference from bubbles (20) generated during the navigation of the ship (10), and ensures safer navigation than if the echo sounder (100) were only installed at the stern, by allowing the echo sounder (100) to be further installed at the bow.

[0143] Figure 9 This is a front view of the mounting structure of a polar ship echo sounder according to yet another embodiment of the present invention. Figure 10 This is a side view of the installation structure of the echo sounder for polar vessels according to this embodiment. Figure 11 This is a bottom view of the installation structure of the echo sounder for polar vessels according to this embodiment. Figure 12 yes Figure 10 An enlarged longitudinal section view of the keel.

[0144] Reference Figures 1 to 6 and Figures 9 to 12 According to this embodiment, the echo sounder mounting structure for polar vessels may include an echo sounder (100) and a keel (400). The echo sounder (100) may be installed inside the keel (400) formed in the lower part of the polar vessel (10) to stably measure water depth without being affected by bubbles (20) moving along the bow of the vessel (10).

[0145] An echo sounder (100) can be installed inside the keel (400). The echo sounder (100) can emit ultrasonic pulses toward the seabed. The echo sounder (100) can receive ultrasonic pulses reflected back from the seabed. Therefore, the echo sounder (100) can calculate the depth of the seabed based on the time required for the ultrasonic pulses to return.

[0146] The echo sounder (100) may include a transmitter body (110) and a support (120). The transmitter body (110) may be coupled to the interior of the keel (400) via the support (120). Therefore, the transmitter body (110) may be detached from the keel (400) for repair or replacement if necessary.

[0147] The bracket (120) couples the transmitter body (110) to the lower part of the keel (400) protruding from the bottom of the boat. The transmitter body (110) can be mechanically coupled to the bracket (120) using bolts / nuts. Alternatively, the transmitter body (110) can be coupled to the bracket (120) via an interference fit. Thus, the transmitter body (110) can be detachably coupled to the bracket (120).

[0148] The bracket (120) can be mechanically fastened to the lower part of the keel (400) using bolts / nuts. Alternatively, the bracket (120) can be welded to the lower part of the keel (400). Thus, the bracket (120) can be securely fixed to the lower part of the keel (400).

[0149] Refer again Figures 1 to 6 and Figures 9 to 12According to this embodiment, the keel (400) can be formed at the lower part of the bow of the ship (10). The keel (400) can be formed at a location where the flow of the bubble (20) is minimized based on the fluid analysis (computational fluid dynamics, CFD analysis) described below. Therefore, the echo sounder (100) can be unaffected by the movement of the bubble (20) during the navigation of the ship (10). Preferably, the keel (400) is mounted on the bow side of the ship.

[0150] Bubbles (20) trapped beneath the hull by waves generated on the bow tend to flow along the hull surface toward the stern, forming a layer of considerable thickness. The thickness of this layer varies depending on the ship's (10) draft, speed, and external sea conditions. When the keel (400) is formed to a height greater than the boundary layer formed by the bubbles flowing along the hull surface, and the echo sounder (100) is mounted on a flat, horizontal surface of the keel (400), malfunctions of the echo sounder (100) due to bubbles are prevented.

[0151] Furthermore, the lower end of the keel (400) can be positioned at a distance of 0.5 m or less from the bottom of the boat (10) in the downward direction. In other words, the keel (400) can be formed with a height (h) of 0.5 m or less. This configuration allows the keel (400) to avoid encountering the flow of air bubbles (20) while minimizing the drag caused by the keel (400) during the navigation of the boat (10). The keel (400) may include a keel body (410) and a keel through-hole (420).

[0152] A keel through-hole (420) may be formed in the lower part of the keel body (410). The keel through-hole (420) provides a channel for ultrasonic pulses emitted and received by the echo sounder (100) to propagate beyond the keel body (410). Therefore, the echo sounder (100), located inside the keel body (410), can calculate the depth of the seabed by measuring the travel time of the ultrasonic pulses reflected from the seabed.

[0153] The lower end of the echo sounder (100) can be placed flush with the lower end of the keel (400) in the height direction of the vessel (10). This configuration prevents the echo sounder (100) from protruding outside the keel (400), which would otherwise lead to increased drag on the vessel (10) or damage to the echo sounder (100). Furthermore, this configuration prevents the echo sounder (100) from being recessed into the keel (400), which would otherwise allow the keel (400) to interfere with the transmission and reception of ultrasonic pulses.

[0154] The lower part of the echo sounder (100) can be formed with the same shape as the keel through-hole (420). This configuration prevents the formation of a gap between the echo sounder (100) and the keel through-hole (420). Therefore, seawater can be prevented from entering the interior of the keel (400). A sealing member (not shown) can be inserted between the lower part of the echo sounder (100) and the keel through-hole (420). This configuration more reliably prevents seawater from entering the interior of the keel (400). Preferably, the keel is designed to minimize the increase in drag and ice interference.

[0155] It should be understood that the present invention is not limited to what has been shown or described above. These are merely exemplary and are not intended to limit the scope of the invention.

[0156] The technical advantages provided by the polar marine echo sounder mounting structure according to this embodiment are as follows.

[0157] Because the polar vessel (10) is designed with its bow tilted at a small angle relative to the waterline to take icebreaking performance into account, the echo sounder (100) can be affected by bubbles (20) even when it is mounted at the front of the bow.

[0158] Because the polar vessel (10) is designed with a smaller angle between its bow and the waterline than that of a conventional vessel to accommodate icebreaking performance, the echo sounder (100) is susceptible to interference from air bubbles (20) even when mounted at the bow. However, when the echo sounder (100) is mounted at the bow, the influence of water depth can be identified more quickly during the vessel's (10) voyage compared to when it is mounted at the stern.

[0159] Therefore, the keel (400) can be formed at the bottom of the hull where bubble flow is minimized based on fluid dynamics (CFD) analysis. A keel (400) formed at this location is unaffected by bubble (20) movement during the ship's (10) voyage. Therefore, an echo sounder (100) can be installed inside the keel (400).

[0160] This configuration ensures that the echo sounder (100) can operate without interference from bubbles (20) generated during the operation and navigation of the ship (10), thereby enabling accurate measurement of the depth of the seabed.

[0161] Figure 13 This is a block flowchart illustrating the installation method of a marine echo sounder according to the present invention. Figure 14 It is shown Figure 13 Analysis view of the fluid analysis steps. Figure 15 It is shown Figure 13 A photo view of the distribution recognition steps.

[0162] Reference Figures 1 to 13The method for installing a marine echo sounder according to the present invention may include a fluid analysis step (S100), a location selection step (S200), a distribution identification step (S300), and a full-scale observation step (S400). In this way, the location on the ship (10) where the flow of bubbles (20) is minimized can be selected as the optimal location for installing the echo sounder.

[0163] In the fluid analysis step (S100), the flow of bubbles (20) entrained below the ship (10) is identified based on fluid analysis. The fluid analysis step (S100) can be performed based on computational fluid dynamics (CFD) analysis. Therefore, the flow of bubbles (20) entrained below the bottom surface of the ship (10) can be clearly identified by color classification.

[0164] In the location selection step (S200), the installation location of the echo sounder is selected based on the results of the fluid analysis step (S100).

[0165] In the distribution identification step (S300), the distribution of bubbles (20) on the hull surface under hydrodynamic flow conditions in the cavitation tunnel verifies the results of the fluid analysis step (S100). The distribution identification step (S300) can be performed by a bubble (20) injection test. In this way, the distribution of bubbles (20) on a scale model of the ship (10) can be identified before the actual construction of the ship (10).

[0166] The distribution identification step (S300) can be executed only after the location selection step (S200) is completed, when a determination (R1) that requires the distribution identification step (S300) is made.

[0167] In the full-scale observation step (S400), the flow of the surrounding bubbles (20) of the echo sounder on the actual vessel (10) is checked to resolve any issues causing the echo sounder malfunction. The full-scale observation step (S400) can be performed based on images captured by an underwater camera.

[0168] The full-scale observation step (S400) can be performed only after the distribution identification step (S300) is completed, when a determination (R2) is made based on the sea trial results that the normal operation of the echo sounder is disturbed by the influence of the bubble (20). Therefore, countermeasures can be prepared by comparing and analyzing the results of the CFD and bubble (20) injection tests with the actual flow of the bubble (20) on the ship (10).

[0169] Reference Figures 1 to 14As a result of performing the fluid analysis step (S100), the bottom of the stern fin is marked in black, indicating that the corresponding location is not affected by the flow of the bubbles (20). Therefore, when the echo sounder is installed inside the stern fin (200), the echo sounder can accurately measure the depth of the seabed without being affected by the flow of the bubbles (20).

[0170] Reference Figures 1 to 13 and Figure 15 As a result of performing the distribution identification step (S300), it is confirmed that the bubble (20) at the bow has moved downwards to the bottom of the ship. Conversely, it is confirmed that the bottom of the stern fin is unaffected by the bubble (20). Therefore, when the echo sounder is installed inside the stern fin (200), the echo sounder can accurately measure the depth of the seabed without being affected by the flow of the bubble (20).

[0171] The technical advantages provided by the polar ship echo sounder installation method according to the present invention are as follows.

[0172] Because the polar vessel (10) is designed with its bow angled at a shallow angle relative to the waterline to account for icebreaking performance, the echo sounder may suffer operational problems due to bubbles (20) even when it is mounted at the bow. If such operational problems are only discovered after the vessel (10) has been built, it may be difficult to develop effective countermeasures.

[0173] Therefore, prior to the construction of the ship (10), the location where bubble flow is minimized can be selected as the optimal location for the echo sounder installation based on fluid analysis (computational fluid dynamics (CFD) analysis). Furthermore, prior to the construction of the ship (10), the results of the fluid analysis can be verified by performing a bubble (20) injection test on a scaled model of the ship (10) in a cavitation tank to identify the distribution of bubbles (20) on the surface of the hull under hydrodynamic flow conditions.

[0174] The ship (10) is built after these steps. When problems arise during the actual operation of the echo sounder after the ship (10) is built, the differences between the results obtained in the steps performed before the ship (10) is built can be checked, and the findings obtained can be applied to the ship (10) to be built later.

[0175] The echo sounder according to this embodiment is intended for use on a polar vessel (10), wherein the vessel may include a stern fin formed below its stern. The echo sounder may be mounted on the stern fin.

[0176] The ship according to this embodiment, wherein the angle between the bow profile and the waterline ranges from 10 degrees to 70 degrees, may include a stern fin and an echo sounder. The stern fin may be formed on the lower part of the stern of the ship (10). The echo sounder may be mounted on the stern fin.

[0177] from Figure 9 A cross-section of a polar vessel reveals that its bottom is flat. Because the hull is wider and flatter than that of a typical merchant ship, bubbles generated by bow waves or similar features tend to flow along the sloping surface of the hull to the bottom. This invention provides various solutions to address this problem. Ships employing this invention have a flat bottom region in their cross-section (preferably taken at the center of the hull's longitudinal direction), such as... Figure 9 As shown. The flat bottom area may correspond to the width of the boat minus twice the bilge radius. Preferably, the flat bottom area accounts for 50% to 100% of the width of the boat, more preferably 60% to 98% of the width of the boat, and even more preferably 75% to 95% of the width of the boat.

[0178] While some embodiments have been described, it will be apparent to those skilled in the art that these embodiments are given by way of example only, and various modifications, variations, alterations, and equivalent embodiments may be made without departing from the spirit and scope of the invention. Therefore, the appended claims and their equivalents are intended to cover such variations or modifications that fall within the scope and spirit of the invention.

Claims

1. A polar vessel, comprising: The keel protrudes from the lower part of the ship; as well as An echo sounder is mounted on the keel and configured to emit ultrasonic pulses toward the seabed, receive the ultrasonic pulses reflected back from the seabed, and calculate the depth of the seabed based on the time required for the ultrasonic pulses to return.

2. The polar vessel according to claim 1, wherein the echo sounder comprises: The sound generator body; as well as A bracket couples the speaker body to the lower part of the keel.

3. The polar vessel according to claim 1, wherein the keel comprises: Keelback body; as well as A keel through-hole is formed in the lower part of the keel body to provide a channel for ultrasonic pulses emitted and received by the echo sounder to propagate beyond the keel body.

4. The polar vessel according to claim 1, wherein the lower end of the keel is positioned in the downward direction of the vessel at a distance of 0.5 m or less from the bottom of the vessel.

5. The polar vessel according to claim 1, wherein the lower end of the echo sounder is placed flush with the lower end of the keel in the height direction of the vessel.

6. The polar vessel according to claim 1, wherein the keel is formed on the bow side.

7. The polar vessel according to claim 1, wherein the bottom of the vessel is formed in a flat shape.

8. The polar vessel of claim 7, wherein the flat region formed on the bottom of the vessel occupies 50% to 100% of the width of the bottom of the vessel in the transverse section of the vessel.

9. An echo sounder for a polar vessel, wherein the echo sounder is mounted within a keel protruding from the lower part of the vessel.

10. A vessel, wherein the angle (β) between the waterline and the bow profile at a point (bow perpendicular: FP) ranges from 10 degrees to 70 degrees, the vessel comprising: The keel protrudes from the lower part of the ship; as well as An echo sounder is installed inside the keel.

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