Apparatus for reducing air resistance of ship

Abstract

The present invention provides an air resistance-reducing apparatus installed at the bow of a ship, the apparatus comprising: a first inclined part provided to be inclined backward from the bow to reduce the air resistance at the bow side; and a second inclined part provided to be erected at a predetermined angle from an upper end of the first inclined part and configured to block green water rising along the first inclined part from the sea and let the green water flow away and disperse toward the opposite side surfaces of the first inclined part.

Description

Ship's air resistance reduction device

[0001] The present invention relates to an air resistance reduction device for a ship, and more particularly, to an air resistance reduction device installed in the bow of a ship.

[0002] In general, container ships have a large wind load area compared to other ship types because containers are loaded on the deck, so air resistance is a major factor.

[0003] When a ship experiences air resistance, it must burn more fuel to generate energy to operate, which can increase fuel consumption, reduce speed, and deteriorate maneuverability.

[0004] Accordingly, ships such as container ships are applying air resistance reduction devices such as windshields, wind deflectors, or air spoilers to the bow.

[0005] Figure 1 illustrates an air resistance reduction device (10) equipped on a ship according to conventional technology.

[0006] Referring to Fig. 1, an air resistance reduction device (10) according to the prior art is installed on the bow side of a container ship and reduces air resistance on the bow side by loading a container (c) at the rear thereof. Since it must withstand strong wind pressure, it is formed in a hemispherical structure.

[0007] However, the hemispherical structure air resistance reduction device (10) has a closed upper part, so sunlight does not enter the interior, which causes a poor working environment in the bow section where the air resistance reduction device (10) is installed, and access by a crane is difficult, making it difficult to maintain mooring equipment or facilities placed inside the air resistance reduction device (10).

[0008] In addition, since a pillar structure (11) supporting the upper wall of the air resistance reduction device (10) had to be installed inside the air resistance reduction device (10), there was a problem of interference with mooring equipment, facilities, and decorations placed on the bow side.

[0009] In addition, while the ship is in operation, green water generated at sea due to bad weather or waves may infiltrate the bow side of the ship. In the case of the conventional air resistance reduction device (10), the green water flows over the bow side deck along the hemispherical curved surface, which causes damage to facilities, equipment, and containers placed on the bow side.

[0010] The present invention provides an air resistance reduction device for a ship, specifically, an air resistance reduction device for a ship that can be installed firmly and safely on the bow of a ship without a pillar structure, has an easy space to secure so that there is no interference with the equipment and mooring equipment placed on the bow deck, has an open upper structure to secure a mining space and facilitates crane access to improve workability, reduces air resistance through a plurality of inclined portions formed on the front to improve fuel efficiency, and can effectively block or disperse green water flowing over the bow.

[0011] The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0012] In order to solve the above-described problem, the present invention provides an air resistance reduction device for a ship, which is installed on the bow of a ship, including a first inclined portion that is inclined toward the rear from the bow to reduce air resistance on the bow side, and a second inclined portion that is erected at a predetermined angle from the top of the first inclined portion and is formed to block green water that rises up the first inclined portion from the sea and to disperse it by flowing it to both sides of the first inclined portion.

[0013] In addition, a device for reducing air resistance of a ship is provided, which further includes a vertical part that is installed vertically at a predetermined height in a form that surrounds the edge of the bow side of the hull and supports a first inclined part and a second inclined part provided on the upper side.

[0014] In addition, the present invention provides an air resistance reduction device for a ship, which further includes side portions formed on both upper sides of the vertical portion to form both sides of the air resistance reduction device and connected to the first and second inclined portions forming the front of the air resistance reduction device, and the side portions are formed higher than the combined height of the first and second inclined portions.

[0015] In addition, a device for reducing air resistance of a ship is provided in which an opening is formed in the vertical section through which mooring equipment placed on the bow side of the hull can be exposed.

[0016] In addition, the ship includes a container ship, and the vertical section provides an air resistance reduction device for the ship formed at a height corresponding to the height of the first tier of the uppermost containers loaded on the forward deck of the hull.

[0017] In addition, a device for reducing air resistance of a ship is provided, in which the angle of inclination of the first slope is formed to be 30° to 60°, and the angle of inclination of the second slope is formed to be the same as or greater than the angle of inclination of the first slope.

[0018] In addition, the second inclined section provides an air resistance reduction device for a ship formed with an angle of inclination exceeding 30° and less than 90°.

[0019] In addition, the ship includes a container ship, and the height of the air resistance reduction device including a vertical portion, a first inclined portion, a second inclined portion, and a side portion is formed to be 50 to 100% of the maximum loading height of the uppermost container loaded on the bow deck, the combined height of the vertical portion and the first inclined portion is formed to be 40 to 80% of the height of the air resistance reduction device, and the combined height of the vertical portion, the first inclined portion, and the second inclined portion is formed to be 50 to 90% of the height of the air resistance reduction device.

[0020] In addition, a device for reducing air resistance of a ship is provided, in which the vertical width from the center bottom of the first inclined portion to the center top of the second inclined portion is formed to be 20 to 60% of the vertical width of the vertical portion.

[0021] In addition, the second inclined section provides a device for reducing air resistance of a ship formed with a width of 50 to 90% of the width of the vertical section.

[0022] In addition, the second inclined section provides an air resistance reduction device for a ship in which the inclined angle of the front and the inclined angle of the side end connected to the side section are formed at the same angle.

[0023] In addition, the side section provides an air resistance reduction device for a ship including a side vertical section that extends from each of the upper ends of the vertical section and is connected to both ends of the first inclined section, and a side extension section that is provided on each of the upper ends of the side vertical section and is connected to both ends of the second inclined section.

[0024] In addition, the second inclined portion forming the upper portion of the air resistance reduction device and the side extension portion are connected to form a predetermined angle, thereby providing an air resistance reduction device for a ship that increases the internal openness of the air resistance reduction device.

[0025] In addition, a water brake is provided at the bow of the ship, and the rear end of the vertical part and the rear end of the side part are connected to and fixed to the water brake, thereby providing an air resistance reduction device for the ship.

[0026] In addition, the first inclined section provides an air resistance reduction device for a ship having an opening formed therein through which mooring equipment placed on the bow side of the hull can be exposed.

[0027] According to an embodiment of the present invention, a device for reducing air resistance of a ship can be installed firmly and safely on the bow of a ship without a pillar structure through a lower support structure installed surrounding the bow edge, and since space is easily secured, there is no interference with equipment and mooring equipment arranged on the bow deck, and by forming a first inclined portion for reducing air resistance at the front and a second inclined portion for blocking or dispersing green water, air resistance can be reduced during ship operation, thereby greatly improving fuel efficiency, and equipment and cargo inside the ship can be effectively protected from green water generated by bad weather or waves.

[0028] In addition, by forming the side surfaces of the air resistance reduction device vertically or nearly vertically and higher than the front surface, and forming the upper portion of the air resistance reduction device open, a mining space is secured, making it easy to work inside the air resistance reduction device, and the crane boom can easily access the open upper portion of the air resistance reduction device, making it easy to perform maintenance on the bow side mooring equipment or facilities placed inside the air resistance reduction device.

[0029] In addition, when installed on an existing ship, it can be installed by connecting to a water brake or similar bow-side structure equipped on the bow-side deck, so that deformation of the side of the air resistance reduction device can be effectively suppressed and it can be more firmly fixed to the hull.

[0030] The effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the present invention belongs from the description below.

[0031] Figure 1 illustrates an air resistance reduction device equipped on a ship according to conventional technology.

[0032] Figures 2 and 3 are perspective views illustrating the overall shape of an air resistance reduction device for a ship according to one embodiment of the present invention.

[0033] Figures 4 to 6 illustrate dimensional characteristics of an air resistance reduction device for a ship according to one embodiment of the present invention.

[0034] FIG. 7 illustrates an air resistance reduction device for a vessel blocking green water according to one embodiment of the present invention.

[0035] Figure 8 is a plan view illustrating an air resistance reduction device of a ship according to one embodiment of the present invention.

[0036] Figure 9 illustrates the installation state of an air resistance reduction device of a ship according to one embodiment of the present invention.

[0037] Fig. 10 is a perspective view showing the overall shape of an air resistance reduction device for a ship according to another embodiment of the present invention.

[0038] Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the attached drawings.

[0039] The detailed description set forth below, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced.

[0040] In order to clearly explain the present invention in the drawings, parts that are not related to the description may be omitted, and the same reference numerals may be used for the same or similar components throughout the specification.

[0041] In embodiments of the present invention, expressions such as “or”, “at least one”, etc. may represent one of the words listed together, or a combination of two or more.

[0042] FIG. 2 and FIG. 3 are perspective views illustrating the overall shape of an air resistance reduction device (100) for a ship according to one embodiment of the present invention, FIG. 4 to FIG. 6 illustrate dimensional characteristics of an air resistance reduction device (100) for a ship according to one embodiment of the present invention, and FIG. 7 illustrates an air resistance reduction device (100) for a ship that blocks green water according to one embodiment of the present invention.

[0043] The air resistance reduction device (100) of a ship according to an embodiment of the present invention can be installed firmly and safely on the bow of the ship through a lower support structure surrounding the bow-side edge without a pillar structure, so that space can be easily secured and there is no interference with the equipment and mooring equipment arranged on the bow-side deck, and a first inclined portion (120) for reducing air resistance and a second inclined portion (130) for blocking or dispersing green water are formed on the front of the air resistance reduction device (100), so that when the ship is operated, the air resistance can be reduced, thereby greatly improving fuel efficiency, and the equipment and cargo inside the ship can be effectively protected from green water generated due to bad weather, etc.

[0044] In addition, the air resistance reduction device (100) of the present invention can be applied to various types of ships, and in the following embodiment, an air resistance reduction device (100) applied to a container ship is described as a representative example.

[0045] Referring to FIGS. 2 to 7, the air resistance reduction device (100) of a ship according to one embodiment of the present invention may include a vertical portion (110), a first inclined portion (120), a second inclined portion (130), and a side portion (140).

[0046] The vertical section (110) is a support structure formed at the bottom of the air resistance reduction device (100), and can be installed in a form that surrounds the edge on the bow side of the hull.

[0047] Specifically, the vertical member (110) is installed in a plate shape that is vertically erected with respect to the deck (upper deck) of the hull, and surrounds the edge end of the bow-side deck. For example, when viewed from above, it may be installed in a semicircular, semi-elliptical or V-shaped shape corresponding to the shape of the bow-side edge of the hull.

[0048] In this way, since the vertical member (110) is installed in a form that surrounds the end of the forward side edge of the hull, it can be installed without interfering with mooring equipment and various equipment arranged on the forward side deck of the hull, and can easily support the first inclined member (120) and the second inclined member (130) formed on the upper portion of the vertical member (110).

[0049] At this time, the height (h1) of the vertical section can be formed higher than the mooring equipment such as the fairlead rod installed on the bow deck, so that it can be formed in a form that can secure maintenance space for the mooring equipment, and an opening can be formed in the vertical section (110) through which the rope of the mooring equipment (m) can be exposed.

[0050] In addition, the height (h1) of the vertical section can sufficiently support the load of the air resistance reduction device (100), while allowing the jack staff to be exposed, and can be formed to a height that complies with the classification rules in terms of structural design.

[0051] Preferably, as an example, in the air resistance reduction device (100) installed on the bow of a container ship, the height (h1) of the vertical portion may be formed to correspond to the height to the first tier of the uppermost container (c) loaded on the bow deck behind the air resistance reduction device (100), and in this case, the conditions described above may be satisfied.

[0052] The first inclined portion (120) can be formed in the form of a plate that is bent in a slanted manner from the top of the vertical portion (110) toward the rear, and can be formed in a form that reduces air resistance caused by wind blowing toward the bow of the ship.

[0053] At this time, the first slope (120) may be formed on the front of the air resistance reduction device (100), and side portions (140) may be formed on both sides of the air resistance reduction device (100).

[0054] Specifically, the first inclined portion (120) forms the front portion of the air resistance reduction device (100), and may be formed to be inclined toward the rear at an angle of approximately 30° or more from the top of the vertical portion (110), and both ends of the first inclined portion (120) may be connected to corresponding side portions (140) forming both side surfaces of the air resistance reduction device (100).

[0055] As an example, the inclination angle of the front center portion of the first inclined portion (120) may be formed at an angle of approximately 30° to 60°, and the inclination angle may increase as it goes from the first inclined portion (120) to the side portion (140).

[0056] The second inclined portion (130) is in the form of a plate body extended at a predetermined angle from the top of the first inclined portion (120), has an angle of inclination that is the same as or greater than that of the first inclined portion (120), and can effectively block green water flowing in from the sea from penetrating into the bow deck.

[0057] Here, green water refers to a large amount of seawater that flows over the deck of a ship due to bad weather or waves in rough seas, and the second inclined portion (130) of the present embodiment is formed by being erected at a predetermined angle on the upper portion of the first inclined portion (120) in the air resistance reduction device (100), so as to block green water from flowing over the inside of the bow by riding the air resistance reduction device (100).

[0058] At this time, the second slope (130) can block the green water coming up the first slope (120) and disperse it by flowing it to both sides of the first slope (120).

[0059] That is, the second inclined portion (130) is formed at the upper end of the first inclined portion (120) at an angle that is the same as or greater than the first inclined portion (120) at the upper end of the air resistance reduction device (100), and the second inclined portion (130) has an inclined angle (a1) at the front and an inclined angle (a2) at the side end of the second inclined portion (130) connected to the side portion (140) formed to be the same, thereby blocking green water flowing upward along the first inclined portion (120) and allowing the green water to flow along the first inclined portion (120) toward the side portion (140) and disperse it.

[0060] As an example, the second inclined portion (130) formed at the top of the first inclined portion (120) may be formed at an angle equal to or greater than the angle of inclination of the first inclined portion (120) at the top of the first inclined portion (120), but may be formed at an angle less than 90°, since forming the second inclined portion (130) at a steep angle may cause resistance.

[0061] The side portion (140) can form both sides of the air resistance reduction device (100).

[0062] Specifically, the side portion (140) may include a side vertical portion (141) that is connected to the side end of the first inclined portion (120) and formed on the upper portion of the vertical portion (110), and a side extension portion (142) that is formed on the upper portion of the side vertical portion (141) and connected to the side end of the second inclined portion (130).

[0063] Here, the side vertical portion (141) extends upward from each of the upper ends of the vertical portion (110) to form both sides of the air resistance reduction device (100), and can be connected to both ends of the first inclined portion (120) forming the front of the air resistance reduction device (100).

[0064] At this time, the side vertical portion (141) can be formed higher than the combined height of the first inclined portion (120) and the second inclined portion (130).

[0065] In addition, the side extension portion (142) can be formed in a plate shape that corresponds to the side vertical portion (141) formed on both sides of the air resistance reduction device (100) and the both ends of the second inclined portion (130) formed inclined from the upper portion of the first inclined portion (120).

[0066] That is, in the present embodiment, the side portions (140) forming both sides of the air resistance reduction device (100) are formed vertically or nearly vertically, but are formed higher than the first and second inclined portions (120, 130) forming the front of the air resistance reduction device (100), so that the connection portion between the second inclined portion (130) forming the upper end of the air resistance reduction device (100) and the side extension portion (142) is formed to be bent outward at a predetermined angle, thereby forming the upper end of the air resistance reduction device (100) to be open, and accordingly, a lighting structure that allows sunlight to enter through the open upper end of the air resistance reduction device (100) can be formed, thereby facilitating work within the air resistance reduction device (100).

[0067] In addition, since the side portion (140) of the air resistance reduction device (100) is formed vertically or nearly vertically and the upper portion is open, the open space (s) on the upper side of the air resistance reduction device (100) can be greatly expanded, so that access by a crane is easy, and maintenance can be easily performed on the mooring equipment or facilities on the bow side placed inside the air resistance reduction device (100).

[0068] Meanwhile, below, with reference to the drawings, the dimensional characteristics of the air resistance reduction device (100) of a ship according to the present embodiment will be described.

[0069] Referring to FIGS. 4 and 5, the air resistance reduction device (100) of the present embodiment can be formed to correspond to the size of the ship or the maximum loading height of the container (c) loaded on the deck of the ship.

[0070] As an example, the height (h) of the air resistance reduction device can be formed at a height of 50 to 100% of the maximum loading height of the container (c), and depending on the operating conditions of the shipping company, can be formed at a height of approximately 75% of the maximum loading height of the container (c).

[0071] At this time, in the case of the air resistance reduction device (100) of the present embodiment, since the side is formed higher than the front, the height (h) of the air resistance reduction device may mean the height from the bottom of the vertical part (110) to the top of the side part (140).

[0072] In addition, the height (h2) of the vertical portion (110) and the first inclined portion (120) of the front of the air resistance reduction device (100) can be formed to be 40 to 80% of the height (h) of the air resistance reduction device, and the height (h3) of the vertical portion (110), the first inclined portion (120), and the second inclined portion (130) can be formed to be 50 to 90% of the height (h) of the air resistance reduction device.

[0073] In addition, when looking at the air resistance reduction device (100) from above, the vertical width (w2) of the first inclined portion (120) and the second inclined portion (130) combined can be formed to be 20 to 60% of the vertical width of the air resistance reduction device (or the vertical width of the vertical portion (110), w1).

[0074] Here, the vertical width (w2) of the first slope (120) and the second slope (130) combined may mean the vertical width from the center of the lower end of the first slope (120) to the center of the upper end of the second slope (130).

[0075] In addition, when looking at the air resistance reduction device (100) from above, the horizontal width (w4) of the second inclined portion (130) can be formed to be 50 to 90% of the horizontal width of the air resistance reduction device (or the horizontal width of the vertical portion (110), w3).

[0076] In addition, referring to FIG. 6, the height (h1) of the vertical portion can be formed to correspond to the height of the first tier of the uppermost container (c) loaded on the bow deck, and the first inclined portion (120) can be formed to have an inclination angle of approximately 30° to 60° at the front center portion.

[0077] In addition, since the second inclined portion (130) becomes a factor in generating resistance when formed at a steep angle, it may be formed at an angle equal to or greater than the angle of inclination of the first inclined portion (120) at the top of the first inclined portion (120), but may be formed at an angle not exceeding 90°.

[0078] As an example, in the present embodiment, the inclination angle of the second inclined portion (130) may be formed at an angle corresponding to half of the angle between the first virtual line (L1) connecting the upper end of the first inclined portion (120) and the uppermost end of the air resistance reduction device (100) (or the uppermost end of the side portion (140)) and the second virtual line (L2) extending vertically from the upper end of the first inclined portion (120).

[0079] The air resistance reduction device (100) of this embodiment having such dimensional characteristics can be formed into a safe structure without a pillar structure and can have improved lightness by being installed in the bow of the hull while forming an arch structure with the vertical portion (110), the first inclined portion (120), the second inclined portion (130), and the side portion (140).

[0080] In addition, through the first slope (120) of the front designed as described above, it is possible to provide an effect of improving fuel efficiency by approximately 2 to 2.5% by reducing air resistance during ship operation, thereby improving the propulsion performance and operation efficiency of the ship and promoting a reduction in carbon emissions.

[0081] In addition, through the second slope (130) of the front designed as described above, green water flowing upward along the first slope (120) can be blocked, and the green water can be effectively dispersed by flowing along the first slope (120) toward the side (140).

[0082] That is, the air resistance reduction device (100) of the present embodiment can be designed to be robust enough to withstand both air resistance and load due to green water.

[0083] In addition, referring to FIGS. 5 and 6, the second inclined portion (130) is formed in a flat shape with the inclination angle (a1) of the front side and the inclination angle (a2) of the side end connected to the side portion (140) being formed at the same angle, so that it can be easily applied when manufacturing an air resistance reduction device (100), and when viewed from above, the second inclined portion (130) is connected to the side extension portion (142) at the top of the side portion (140) while maintaining the inclination angle, but the connecting portion of the second inclined portion (130) and the side extension portion (142) is formed in a shape in which it is bent outward at a predetermined angle, so that an open space (s) can be secured at the top of the air resistance reduction device (100).

[0084] That is, FIG. 8 is a plan view illustrating an air resistance reduction device (100) of a ship according to one embodiment of the present invention, and as described above, when the air resistance reduction device (100) is viewed from above, an open space (s) is secured at the upper portion of the air resistance reduction device (100), so that a space for mining can be formed, and a boom (B) of a crane can easily access the open upper portion of the air resistance reduction device (100), so that maintenance can be easily performed on mooring equipment or facilities on the bow side arranged inside the air resistance reduction device (100).

[0085] Figure 9 illustrates the installation state of an air resistance reduction device (100) of a ship according to one embodiment of the present invention.

[0086] The air resistance reduction device (100) according to this embodiment can be installed integrally in the bow of the ship during ship construction, and can be easily installed in existing ships in particular.

[0087] Referring to FIG. 9, when installing the air resistance reduction device (100) of the present embodiment on an existing container ship, the air resistance reduction device (100) can be firmly installed by connecting it to a water brake (or break water, 150) provided on the forward deck of the container ship.

[0088] Here, the water brake (150) is a breakwater structure installed to protect cargo and the hull structure from waves coming over the bow deck of the ship, and is firmly fixed to the hull. In this embodiment, the rear end of the air resistance reduction device (100) can be installed by connecting it to the front of the water brake (150) in the form of a breakwater already installed on the hull.

[0089] Specifically, since the air resistance reduction device (100) of the present embodiment is installed and fixed in a form in which the lower vertical portion (110) surrounds the edge of the bow side of the hull, it can be firmly installed on the bow side without interfering with mooring equipment and various equipment arranged on the bow side deck due to the absence of a pillar structure. In the air resistance reduction device (100), the rear ends of both sides of the vertical portion (110) and the rear ends of both side portions (140) can be connected and fixed to both sides of a water brake (150) provided on the hull, so that deformation of the side portion of the air resistance reduction device (100) can be effectively suppressed, and the air resistance reduction device (100) can be more firmly fixed to the hull.

[0090] In addition, if a similar structure is provided on the forward deck of a container ship instead of a water brake, it goes without saying that an air resistance reduction device (100) can be installed by connecting it to the structure.

[0091] As an example, if there is no water brake on the bow deck of a container ship, the rear end of an air resistance reduction device (100) can be installed by connecting it to a lashing bridge installed on the bow deck.

[0092] FIG. 10 is a perspective view showing the overall shape of an air resistance reduction device (200) of a ship according to another embodiment of the present invention.

[0093] Referring to FIG. 10, the air resistance reduction device (200) of a ship according to the present embodiment can be formed in a form in which, compared to the air resistance reduction device (100) of a ship according to the first embodiment described above, the vertical portion (110, see FIG. 2) is omitted and the first inclined portion (210) is installed on the hull.

[0094] Specifically, the air resistance reduction device (200) of the present embodiment may include a first inclined portion (210), a second inclined portion (220), and a side portion (230).

[0095] The first inclined portion (210) is installed in a form that surrounds the edge of the bow side of the hull, and is formed to be inclined from the bow toward the rear, so as to reduce air resistance caused by wind blowing toward the bow of the ship.

[0096] The first inclined portion (210) forms the front portion of the air resistance reduction device (200), and may be formed to be inclined toward the rear at an angle of approximately 30° or more, and both ends of the first inclined portion (210) may be connected to the side portions (230) forming both side surfaces of the air resistance reduction device (200).

[0097] Additionally, an opening may be formed at the bottom of the first slope (210) through which the rope of the mooring equipment (not shown) may be exposed.

[0098] The second inclined portion (220) is in the form of a plate body extended at a predetermined angle from the top of the first inclined portion (210), has an angle of inclination that is the same as or greater than that of the first inclined portion (210), and can effectively block green water flowing in from the sea from penetrating into the bow deck.

[0099] The side portions (230) are connected to both ends of the first inclined portion (210), and are installed so that the lower ends are supported on the edges of the hull, thereby forming both sides of the air resistance reduction device (200).

[0100] Specifically, the side portion (210) may include a side vertical portion (231) connected to the side end of the first inclined portion (210) and having a lower end supported on the edge of the hull, and a side extension portion (232) formed on the upper portion of the side vertical portion (231) and connected to the side end of the second inclined portion (220).

[0101] In addition, in the present embodiment, when the air resistance reduction device (200) of the present embodiment is installed on an existing container ship, the rear end of the side part (210) can be firmly installed by connecting it to a water brake (150, see FIG. 9) or a lashing bridge (not shown) provided on the forward deck of the container ship.

[0102] Accordingly, in this embodiment, the vertical portion (110, see FIG. 2) is omitted, and the air resistance reduction device (200) can be formed in a form including a first inclined portion (210), a second inclined portion (220), and a side portion (230), and in this embodiment as well, the same effect as in the first embodiment described above can be implemented.

[0103] As described above, the air resistance reduction device (100, 200) of a ship according to an embodiment of the present invention can be installed firmly and safely on the bow of the ship without a pillar structure through a lower support structure installed surrounding the bow edge, and since it is easy to secure space, there is no interference with the equipment and mooring equipment arranged on the bow deck, and by forming a first inclined portion (120, 210) that reduces air resistance at the front and a second inclined portion (130, 220) that blocks or disperses green water, the air resistance can be reduced during ship operation, thereby greatly improving fuel efficiency, and the equipment and cargo inside the ship can be effectively protected from green water generated by bad weather or waves.

[0104] In addition, by forming the side surfaces (140, 230) on both sides of the air resistance reduction device (100, 200) vertically or nearly vertically and higher than the front surface, and forming the upper portion of the air resistance reduction device (100, 200) open, a mining space is secured, making it easy to work inside the air resistance reduction device (100, 200), and the boom (B) of the crane can easily access the open upper portion of the air resistance reduction device (100, 200), making it easy to perform maintenance on the mooring equipment or facilities on the bow side placed inside the air resistance reduction device (100, 200).

[0105] In addition, when installed on an existing ship, it can be installed by connecting to a water brake (150) equipped on the bow deck or a similar bow structure, so that deformation of the side part (140, 230) of the air resistance reduction device (100, 200) can be effectively suppressed, and it can be more firmly fixed to the hull.

[0106] The embodiments of the present invention disclosed in this specification and drawings are merely specific examples presented to easily explain the technical content of the present invention and to help understand the present invention, and are not intended to limit the scope of the present invention.

[0107] Therefore, the scope of the present invention should be interpreted to include all changes or modifications derived based on the technical idea of ​​the present invention in addition to the embodiments disclosed herein.

Claims

1. In an air resistance reduction device installed in the bow of a ship, A first inclined portion that is provided to be inclined toward the rear from the above-mentioned bow section to reduce air resistance on the bow side; and A device for reducing air resistance of a ship, comprising a second inclined section, which is installed at a predetermined angle from the top of the first inclined section and is formed to block green water rising from the sea along the first inclined section and to disperse it by flowing it to both sides of the first inclined section.

2. In paragraph 1, An air resistance reduction device for a ship, which is installed vertically at a predetermined height in a form that surrounds the edge of the bow side of the hull and further includes a vertical portion that supports the first inclined portion and the second inclined portion provided on the upper side.

3. In paragraph 2, It further includes side portions that are provided on both upper sides of the vertical portion and form both sides of the air resistance reduction device, and are connected to the first inclined portion and the second inclined portion that form the front of the air resistance reduction device. An air resistance reduction device for a ship, wherein the side portion is formed higher than the combined height of the first inclined portion and the second inclined portion.

4. In paragraph 2, An air resistance reduction device for a ship having an opening formed in the vertical section through which mooring equipment arranged on the bow side of the hull can be exposed.

5. In paragraph 2, The above vessels include container ships, The above vertical part, A device for reducing air resistance of a ship formed to a height corresponding to the height of the first tier of the uppermost container loaded on the bow deck of the above-mentioned hull.

6. In paragraph 1, The inclination angle of the first slope is formed to be 30° to 60°, A device for reducing air resistance of a ship, wherein the angle of inclination of the second inclined portion is formed at an angle equal to or greater than the angle of inclination of the first inclined portion.

7. In paragraph 6, An air resistance reduction device for a ship, wherein the inclination angle of the second inclined portion is formed to exceed 30° and less than 90°.

8. In paragraph 3, The above vessels include container ships, The height of the air resistance reduction device including the vertical portion, the first inclined portion, the second inclined portion, and the side portion is formed to be 50 to 100% of the maximum loading height of the uppermost container loaded on the bow deck, The combined height of the vertical portion and the first inclined portion is formed to be 40 to 80% of the height of the air resistance reduction device, An air resistance reduction device for a ship, wherein the combined height of the vertical portion, the first inclined portion, and the second inclined portion is formed to be 50 to 90% of the height of the air resistance reduction device.

9. In paragraph 8, A device for reducing air resistance of a ship, wherein the vertical width from the central lower end of the first inclined portion to the central upper end of the second inclined portion is formed to be 20 to 60% of the vertical width of the vertical portion.

10. In paragraph 8, A device for reducing air resistance of a ship, wherein the width of the second inclined portion is formed to be 50 to 90% of the width of the vertical portion.

11. In paragraph 3, The above second slope is, A device for reducing air resistance of a ship in which the inclination angle of the front and the inclination angle of the side end connected to the side portion are formed at the same angle.

12. In paragraph 3, The above side part, Side vertical portions extending from the upper ends of both sides of the vertical portion and connected to both ends of the first inclined portion; and A device for reducing air resistance of a ship, including side extensions each provided on the upper portion of the side vertical portion and connected to both ends of the second inclined portion.

13. In paragraph 12, An air resistance reduction device for a ship, wherein the second inclined portion forming the upper portion of the air resistance reduction device and the side extension portion are connected to form a predetermined angle, thereby increasing the internal openness of the air resistance reduction device.

14. In paragraph 3, The bow of the above vessel is equipped with a water brake, A device for reducing air resistance of a ship in which the rear end of the vertical section and the rear end of the side section are connected and fixed to the water brake.

15. In paragraph 1, An air resistance reduction device for a ship having an opening formed in the first inclined section through which mooring equipment arranged on the bow side of the hull can be exposed.

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