Abstract: A mooring apparatus may allow for watercraft to be secured to a mooring structure. An example of a mooring apparatus includes a frame secured to a shell cover at a plurality of points, a plurality of rollers disposed within the frame, and a tension bar disposed within the frame and parallel to the plurality or rollers.

Abstract: A boat tie down apparatus including a tubular member, the tubular member has a length that provides for the displacement of a boat from the dock during mooring, the tubular member has a rope extending therethrough, the front end of the rope extends out the front of the tubular member, and locates approximate the front end of the tubular member, to form a variable sized loop, for securement over a cleat or other structure at the dock. The back end of the rope, that extends through the tubular member, can be pulled for tightening the apparatus to the dock, and then the back end of the rope can be tied to a structure on the boat, such as a cleat, to provide for securement of the boat to the dock, displaced from the dock, during its mooring.

Abstract: The application relates to a floatable foundation structure for an offshore structure including at least one floating body arrangement and at least one mass arrangement. The mass arrangement is connected to the floating body arrangement by at least one holding rope in a coupling state. Further, in the coupling state for coupling the floating body arrangement to the mass arrangement, a coupling section of the holding rope is arcuately guided around a contact section of the mass arrangement.

Abstract: An omnidirectional underwater vehicle includes an open-frame mechanism including a frame with top thrusters at four corners of a top end of the frame; mechanical arms disposed at a front end of the frame; and a rotary holder disposed in the frame and including a motor fixing plate, an upper bearing fixing plate and a lower bearing fixing plate. A cylindrical roller bearing is fixed between the upper bearing fixing plate and the lower bearing fixing plate, and an inner edge of the cylindrical roller bearing is provided with two bearing clip inner plates from top to bottom. A servo motor is fixed on the motor fixing plate, a bottom end of the bearing clip inner plate at the bottom is fixedly connected to a steering gear fixing plate, and a top end of the steering gear fixing plate is provided with fully waterproof steering gears installed with underwater thrusters.

Abstract: A dual axes connection device for use with a mooring line, a line guide and pulling means for connecting a floating body and a fixed body is provided. The connecting device comprises a dual axes hinge unit, with orthogonal rotational axes x and y, comprising means for fastening the unit to the floating or fixed body, a connecting link fastened to the hinge unit comprising two parallel arms, a funnel connected to the two parallel arms enveloping the mooring line, and locking means for locking the mooring line to the funnel. The mooring line, the line guide and connection device are positioned in one plane.

Abstract: Catamaran boat hulls are described having sponsons, an underside tunnel surface between sponsons, two longitudinal steps disposed across each sponson's keel, and two transverse steps disposed lengthwise on opposing sides of each sponson's keel. The longitudinal steps for a sponson have a profile with a curved longitudinal step portion on the opposing outer edges with an outer edge portion of that curved longitudinal step portion being further away from the sponson's aft section, and an inward step edge offset where each of the two longitudinal steps meets a hull side of the sponson. The transverse steps help define variable deadrise inner lifting pad running portion with a lower deadrise aft transitioning to a higher deadrise forward. Spray rails protruding off the aft end of an underside wave spitter and away from the boat hull's centerline help manage undesired spray and use of radiused chines enhances lift and landing performance.

Abstract: Disclosed herein are a method and a system for forming an air layer over a portion of an engineered surface, wherein the air layer is formed with a reduced flux and preferentially steering gas away from, or toward, a specific location by way of a hydrophobic surface, a hydrophilic surface, and/or a structured surface. Moreover, disclosed are a method and a system for recovering or separating a portion of the gas or other fluid layer.

Abstract: A device for controlling pitch, roll and/or steering of a boat, ship or vessel has a length direction and a height direction and includes at least two actuators, at least two actuating means, at least two crankshafts and an interceptor member. Each actuator is adapted to interact with the corresponding actuating means. The actuating means are adapted to interact with the interceptor member, such that the interceptor member is linearly displaceable between a retracted and an extracted position. Each actuating means is adapted to interact with the corresponding crankshaft, which thereby rotates. The crankshafts interact with the interceptor member such that rotations of the crankshafts consequently lead to a displacement of the interceptor member between the retracted and the extracted position. A boat, ship or vessel include the device.

Abstract: The present invention relates to a hull in particular for a container ship, a bulk carrier and a tanker. The hull includes an elevation of an outer contour of the hull with respect to an upwards directed vertical direction of the hull in the region of a first body plan and a second body plan in relation to a surface section immediately adjoining to the elevation. Therein, the elevation is arranged in a region between a middle and a stern of the hull.

Abstract: The invention is related to boatbuilding and may be used in construction and modernisation of high-speed monohull motor seagoing boats, where a single hull is used, which is moving in a surfing on a water cushion mode. Stabilised hull of a monohull motor boat, which is using a surfing glide on a water cushion, with the deeply submerged displacement bearing blade, with a hull of a total width of not more than 50% of its length, which, in its lower part over its entire length, has a descending shape of its bottom surface in the direction bow-to-stern, where the bow is elevated up to the distance from the waterline, corresponding to at least 25% of the hull's width, and under the bow is a high wave-piercing stem.

Abstract: A deep-ocean polymetallic nodule collector is an apparatus that is used to harvest polymetallic nodules and other natural resources from the ocean floor. To do so, the apparatus includes a support frame and a collection mechanism. The support frame is a durable structure designed to withstand the harsh deep-ocean conditions. The support frame keeps the collection mechanism adjacent to the ocean floor for the mining of polymetallic nodules without damage to the underwater ecosystem. In addition, the support frame allows for attachment of mining support vehicles that support the operation of the apparatus. The mining support vehicles can include, but are not limited to, cabled vehicles which are connected to the surface for power, monitoring, and control, wireless submersible vehicles, or ocean-bottom based vehicles that can operate autonomously, semi-autonomously, or by remote control.

Abstract: An electric marine propulsion system including steering and vertical position control is provided. The electric drive assembly includes a main drive motor transmitting torque through a shaft to a propeller. The electric drive assembly integrates a dual rudder system positioned ahead of the main drive propeller. The rudder assemblies integrate electric stern thrusters for low-speed maneuvering. The steering and vertical position adjustments for the drive assembly are electrically operated. The electric drive assembly is installed entirely outside the hull of the watercraft.

Abstract: A self-contained knotless security device and method for adjustably securing rope-style pilot ladders and debarkation ladders from any rung to ship deck lashing points, the device not relying on additional mechanical fittings or knot-tying skills. The device comprising a section of multi-strand polyester rope comprising an integrated polyolefin core and having a ship end and a ladder end, the ship end comprising a rugged, wear and corrosion-resistant thimble eye or shackle and the ladder end comprising a flexible long soft eye on the other end. The method comprising encircling ladder suspension members with the device and securing the device to the ship deck lashing point. Alternate polyolefin core construction provides tailored performance characteristics.

Abstract: The embodiments herein relate to amounting arrangement (100) for a propulsion unit. The mounting arrangement (100) comprises an attachment arrangement (133) adapted to attach said mounting arrangement (100) to a marine vessel. The mounting arrangement (100) comprises a propulsion unit carrying arrangement (110) adapted to be rigidly connectable to said propulsion unit. The propulsion unit carrying arrangement (110) is pivotably mounted to said attachment arrangement (133). The embodiments further relate to a marine propulsion system (200) comprising a propulsion unit (210) and the mounting arrangement (100). The propulsion unit (210) is rigidly connected to the propulsion unit carrying arrangement (100). An output shaft of the propulsion unit (210) is drivingly connectable to a shaft of a propeller drive (220). The marine propulsion system is pivotably mountable to a marine vessel.

Abstract: The present disclosure provides a system and method for monitoring a floating vessel hull mooring system by determining one or more hull rotational motions of yaw, roll, and/or pitch that do not require independent knowledge of environmental conditions. The hull rotational motion of a secure and intact mooring system can be calculated and/or established experientially over time by measuring movement of the hull to characterize the hull rotational motion at given geographical positions. A compromised mooring system will result in different hull rotational motion of at least one of yaw, roll, and/or pitch. By monitoring the hull rotational motion for a given geographical position to be compared to the theoretical values (and/or previous recorded values), it is then possible to assess that at least a portion of the mooring system has been compromised and in at some embodiment indicate which portion of the mooring system has been compromised.

Abstract: A bar gripping assembly is configured to join a bar to a marine accessory on a marine craft. The bar gripping assembly has a single piece housing having an upper housing portion and a lower housing portion. A marine accessory is formed as part of the upper housing portion. A first wall slot and a second wall slot are arranged through the lower housing portion. A hollow portion adjacent to a weakened wall on the lower housing portion that has a lower portion opening and an upper portion. A strap is arranged through the first wall slot, the second wall slot, and around the lower portion opening. The strap compresses the lower housing portion against the bar to join the marine accessory to the marine craft.

Abstract: A storage structure is configured to be buoyant or retained above a water line. The storage structure includes a frame having a back beam, a left beam attached to the back beam, a right beam attached to the back beam and a front beam attached to the left beam and the right beam to form a substantially rectangular configuration, wherein prior to a last of the beams being secured together an interior space accessible through an opening. The storage structure includes a bladder configured to be positioned through the interior space though the opening wherein the bladder is sized to be retained within the interior space whether the storage structure is above the water line or buoyant, the bladder including a vent, a fill port and a drain wherein an amount of water within the bladder is manipulated to provide ballast or buoyancy to the storage structure.

Abstract: An off-shore wind turbine system is assembled using a platform or jack-up vessel, and a first base anchored to the seafloor at a bade assembly off-shore location. A buoyant tower is attached to the first base. A crane provided on the platform or jack-up vessel is used to lift blades and blades, which are then coupled to a turbine held in a nacelle provided at the top of the buoyant tower. The buoyant tower, the nacelle, and the blades are detached from the first base. The buoyant tower, the nacelle, and the blades are towed to a wind farm and connected to a second base provided in the wind farm. The buoyant tower, the nacelle, and the blades are further stabilized using mooring lines spanning between the buoyant towers and other bases provided in the wind farm. The first base and/or the second base include anti-rotation features.

Abstract: A technique facilitates detection of gaseous emissions in a marine environment via a vessel or vessels traversing a region of the marine environment. Environmental data is collected via a detection system on each vessel and communicated to a processing system. The processing system processes various environmental data such as location data, emission detection data, wind data, and/or other data to determine an emissions result. This emissions result is output in a form to facilitate decision-making with respect to potential corrective actions to reduce the gaseous emissions.

Abstract: Methods and systems for handling a tail chain of a mooring line are provided. A fairlead stopper having a tail chain support is provided for removing and reconnecting tail chain to the mooring line. The tail chain support is positioned to receive the tail chain of the mooring line, and includes a first chain coupler to secure a first portion of the mooring line, a second chain coupler to secure a second portion of the mooring line, and a working zone between the chain couplers for removing and reconnecting the tail chain.