Abstract: The present invention relates to an offshore wind power generator, a lifting jig for transferring the offshore wind power generator, and a method for installing the offshore wind power generator using the lifting jig. The offshore wind power generator according to an embodiment of the present invention includes a blade, a nacelle including a power generator for generating power by the rotation of the blade, and a tower supporting the nacelle and installed on a support structure installed offshore. Also, the offshore wind power generator includes a tower support structure installed on the tower so that the tower is lifted using a predetermined transfer unit in a state where the blade, the nacelle, and the tower are integrally assembled. The tower support structure is disposed above a center of gravity of the wind power generator at which the blade, nacelle, and the tower are integrally assembled.

Abstract: A waste heat recovery device for a marine vessel is disclosed. According to the embodiments of the present invention, the waste heat recovery device for a marine vessel includes: a heat exchanger, which recovers heat from the exhaust fumes discharged from the engine, to heat a first refrigerant under uniform pressure; a turbine which is driven by adiabatically expanding the first refrigerant heated under uniform pressure; a condenser which condenses the adiabatically expanded first refrigerant; and a heat exchanging pump which compresses the condensed first refrigerant so as to re-circulate the compressed first refrigerant to the heat exchanger.

Abstract: Provided is a coating-forming apparatus. The coating-forming apparatus according to one embodiment of the present invention includes a support member rotatably supporting a tube body about the central axis thereof; a robot moving in the longitudinal direction of the tube body and spraying paint or an abrasive material on the outer circumferential surface of the tube body, a rotation-detecting device attached to the tube body and measuring the angle of rotation of the tube body, and a controller for controlling the supporting member or the robot.

Abstract: Disclosed are a propulsion device for a ship and a ship having the same. The propulsion device, according to an embodiment of the present invention, includes a rotational shaft, a rear propeller fixed to the rotational shaft, a front propeller rotatably supported by the drive shaft in front of the rear propeller, a counter rotation unit disposed in an installation space of a stern of a ship body and including a plurality of gears configured to reverse rotation of the rotational shaft and transmit the reversed rotation to the front propeller and a gear box configured to receive the plurality of gears, a coupling unit configured to separably connect the rotational shaft with the counter rotation unit and cut off power transmission from the rotational shaft to the counter rotation unit upon disconnection therebetween, and a rotation preventing unit configured to prevent rotation of the front propeller when the coupling unit is separated.

Abstract: Disclosed are a mooring system and a drill ship including the same. The mooring system according to an embodiment of the present invention includes a circular guide groove formed on a bottom surface of a hull and configured to use a center of the moon pool as a center thereof, a turret having a ring shape and inserted into the guide groove to rotate, and a bearing interposed between the turret and the guide groove to rotate with respect to the guide groove of the turret.

Abstract: Provided is a liquefied gas transfer device for reducing boil-off gas. The liquefied gas transfer device for reducing boil-off gas comprises: at least one transfer pipe formed in a vertical direction inside a quay for storing liquefied gas so as to transfer the liquefied gas; a branch pipe which is branched from a lower part of the transfer pipe to one side of the transfer pipe, and which has an end part opened toward a bottom surface of the quay; a valve which is connected to the branch pipe and/or the transfer pipe, and which opens and closes the branch pipe or the transfer pipe so as to move the liquefied gas from the transfer pipe to the branch pipe; and a resistance member disposed inside the branch pipe so as to interrupt the flow of the liquefied gas.

Abstract: Provided is an apparatus for measuring a location of an underwater vehicle, including a hull information generating unit dividing a hull surface into a plurality of areas, and generating normal vector information for each area and level information which is information for a depth that each area is submerged into water, a vehicle information receiving unit receiving attitude and depth information for a vehicle attached to the hull surface, and a location determining unit comparing the attitude information for the vehicle with the normal vector information for the area, and comparing the depth information for the vehicle and the level information for the area to determine a location of the vehicle.

Abstract: Disclosed is a device for revaporizing natural gas. Provided is a device for revaporizing natural gas hydrate pellets, comprising: a pellet charging portion for charging pellets which is formed with an upper valve and a lower valve so as to divide space for adjusting pressure; a storing portion, which communicates with the lower portion of the pellet charging portion, for receiving pellets when the lower valve is opened; a transfer screw, one end of which couples to the lower portion of the storing portion, for transferring the pellets in the storing portion; and a dissolving reaction tub, which is coupled to the other end of the transfer screw, receives pellets from the lower portion of the dissolving reaction tub, and which accommodates heating water.

Abstract: A device and method for controlling a real time weaving motion are provided. In order to control operation of a robot in a working space, a main moving path of the robot in the working space is determined, a unit motion constituting the determined main moving path is generated, while a continuous motion in which a unit motion is connected, weaving that dynamically changes offset is generated, and a compensation displacement or a compensation rotation amount that is determined according to the work environment is generated. A position and a rotation amount of the robot are calculated in the working space according to at least one of the unit motion, the weaving, the compensation displacement, and the compensation rotation amount.

Abstract: Disclosed are a device and a method for manufacturing a natural gas hydrate. Provided is the device for manufacturing a natural gas hydrate comprising: an ice slurry generation unit for preparing ice slurry having 13-20% of ice at normal pressure; a first pipe, having one end connected to the ice slurry generation unit for withdrawing the ice slurry from the ice slurry generation unit, and in which a high-pressure pump for increasing pressure on the ice slurry is interposed; a hydrate preparation reactor, which is connected to the other end of the first pipe so as to receive the pressurized ice slurry, and to which natural gas is supplied and mixed, for generating natural gas hydrate slurry; a second pipe, having one end connected to the hydrate preparation reactor, for withdrawing the natural gas hydrate slurry; and a dehydrating portion, which is connected to the other end of the second pipe, for dehydrating the natural gas hydrate slurry.

Abstract: A liquid cargo storage tank and a ship including the same are provided. The liquid cargo storage tank according to the present invention comprises: a body installed in a hull of a ship and having a liquid cargo receiving space by forming a space between the body and the hull; and a reinforcing plate installed in the lower part of the body in a state of being spaced apart from the underside of the body to be a floor of the liquid cargo receiving space.

Abstract: A propulsion device for a ship is introduced. The propulsion device for the ship comprises a duct having a nose corresponding to the front vertex of a hydrofoil cross-section and a tail corresponding to the rear vertex of the hydrofoil cross-section, wherein the shape of the duct cross-section comprises: an outer surface formed upward in a convex shape at the front end of the duct and formed downward in a concave shape at the rear end of the duct; an inner front part of the duct formed downward in a convex shape at the front end of the duct; an inner rear part of the duct formed downward in a convex shape at the rear end of the duct; and a parallel part for connecting the inner forward part and the inner backward part in parallel to each other.

Abstract: Provided is a trolley which is easily driven or braked. The trolley includes a body unit which moves along a rail and a power transfer unit which transfers power for driving or braking of the body unit, in which the power transfer unit includes an input shaft, an output shaft which receives power of the input shaft and transfers the power to the body unit, and a locking unit which transfers the power from the input shaft to the output shaft but does not transfer power from the output shaft to the input shaft.

Abstract: Disclosed are a propulsion system for a ship, a method of assembling the same, and a method of disassembling the same. The propulsion system for the ship includes: a rear propeller fixed to a rotary shaft; a front propeller that is rotatably supported on the rotary shaft in front of the rear propeller; a contra-rotating device that is mounted in an installation space at a rear end of a hull so as to reverse the rotation of the rotary shaft and transmit the reversed rotation to the front propeller; a propeller connecting member that connects the contra-rotating device and the front propeller to transmit a rotational force; and a thrust supporting device that is provided between the contra-rotating device and the propeller connection member to support thrust of the front propeller.

Abstract: Provided is an intake air cooling system for a marine vessel having a turbocharger. The intake air cooling system for the marine vessel includes: a turbocharger which compresses the intake air introduced from the outside using a portion of the exhaust gas generated by the engine, wherein the turbocharger has a front end through which the intake air is introduced and a rear end through which the compressed intake air is supplied to the engine; a cooling part which cools at least one of the intake air compressed in the turbocharger and the exhaust gas passing through the turbocharger, wherein the cooling part includes one or more cooling units disposed along the flow of the intake air or the exhaust gas; and an absorption cooling device which receives heat from the working fluid circulated through the cooling unit.

Abstract: The present invention relates to an apparatus and a method for treating ballast water. The object of the present invention is to provide an apparatus and a method for precisely controlling the production, injection, and removal of disinfectants using electrolysis according to the flow rate of ballast water, wherein the ballast water flows into a ballast tank or is discharged from the ballast tank in order to manage the ballast water or ships so that the destruction or disruption of marine ecosystems can be prevented.

Abstract: An apparatus for moving blades of a wind turbine is provided. The apparatus for moving blades for a wind turbine includes: wire connectors formed at a plurality of blades; and a pair of wires that are attachable and detachable to and from first to third wire connectors so as to connect the first and second wire connectors formed at first and second blades and a third wire connector formed at the third blade.

Abstract: A moving apparatus includes: robot guiding rails extended in a first direction to guide the working robot, and including first and second ends; first rollers included at a vicinity of the first end of the robot guiding rail and having a rotation axis in a second direction perpendicular to the first direction; hook arms included at the vicinity of the first end of the robot guiding rail, and including hooks extended in the first direction and facing upwardly; hook latches included at a vicinity of the second end of the robot guiding rail, positioned at a position corresponding to the hook arm, and latched by the hooks of the hook arms at lower sides thereof; and docking guiding rails included at the vicinity of the second end of the robot guiding rail, extended in the first direction, and having an upper surface for guiding the first roller.

Abstract: The invention relates to an industrial robot having an apparatus for driving an attachable/detachable four-bar link mechanism, comprising: a base frame having a rotating joint for a robot body; a pivot frame which is coupled to the rotating joint and which has a rotating joint; a column frame which is coupled to the rotating joint of the pivot frame, and which has a straight-line joint; a motor arranged in the pivot frame to rotate the column frame; a decelerator attachably/detachably mounted on the rotating joint of the pivot frame or directly on the pivot frame to receive driving force from the motor; and a four-bar link installed between an output shaft of the decelerator and the column frame.

Abstract: A system and method for correcting a nacelle wind velocity of a wind power generator are provided.