Abstract: A watercraft comprising a battery ballast system is shown and described. The battery ballast system comprises a plurality of carriage assemblies, each comprising a plurality of tiers along the watercraft's height axis, and each being movable along the watercraft's length axis. The batteries sit on movable supports that are movable along the watercraft's width axis. Each tier is loaded to less than 50 percent with batteries and battery supports so that the batteries in each tier can be moved along the ship's width axis relative to the hull in a manner that will affect the ship's list. The carriage assemblies occupy a portion of the length along which they are movable so that they can be moved along the ship's length axis relative to the hull to affect the ship's trim.

Abstract: A field configurable vehicle includes bladders located interior of the vehicle hull walls. One or more of the bladders can be filled with fluids of varying densities to manage the buoyancy, mass properties, and thermal heat dissipation of the vehicle.

Abstract: A field configurable vehicle includes bladders located interior of the vehicle hull walls. One or more of the bladders can be filled with fluids of varying densities to manage the buoyancy, mass properties, and thermal heat dissipation of the vehicle.

Abstract: A stowable propulsion system for a marine vessel. A base is configured to be coupled to the marine vessel. A propulsion device is configured to propel the marine vessel in water. A shaft extends along a length axis and pivotably couples the propulsion device to the base. The propulsion device is pivotable into and between a stowed position and a deployed position, wherein pivoting the propulsion device causes the shaft to rotate about the length axis.

Abstract: A collapsible protective case for transporting or storing one or more surfboards, the protective case having a rigid, impact-resistant outer surface, a housing and a plurality of adjoining nested sections that are selectively configurable between a collapsed, fully nested position within the housing and an extended position, the protective case including a space configured to accommodate, in the extended position, the surfboard fins.

Abstract: An example system for attaching accessories to a boat or a marine environment includes a first leg frame member, a second leg frame member, an attachment device, a first flexible support member, and a second flexible support member. Each of the first leg frame member and the second leg frame member has a base member, an intermediate member, and a top member. The intermediate member is attachable to the base member and the top member is attachable to the intermediate member. The attachment device is mountable to the first leg frame member and the second leg frame member. The first flexible support member is attachable to one of the first leg frame member and the attachment device. The second flexible support member is attachable to one of the second leg frame member and the attachment device.

Abstract: A convertible inflatable stand-up paddle board includes a main body member defining a first aperture and optionally a second aperture, and one or more panels fixed to the main body member and covering a bottom end of the apertures. A foldable seat assembly is disposed in the first aperture, and a second seat assembly is disposed in the second aperture. The seat assemblies have a seat portion and a backrest portion. The backrest portion is movable between (i) a folded position wherein a surface of the backrest portion and an upper surface of the main body member define a standing surface for the stand-up paddle board, and (ii) an upright position wherein the backrest portion extends away from the seat portion. The stand-up paddle board is thereby convertible between a stand-up configuration and a sit-down configuration.

Abstract: A deployable conscious or unconscious person-in-the-water rescue apparatus that can be manually or automatically deployed multiple and consecutive times to assist both a rescuer and a person-in-the-water by providing a tethered net that self-deploys in the water and supports the person-in-the-water while being pulled to safety.

Abstract: A device for supporting a propulsor on a marine vessel. The device includes a base that is fixable to the marine vessel and a pivot arm for coupling the propulsor to the base. An actuator is configured to pivot the pivot arm relative to the base into and between a retracted position and a deployed position. A fastener is engageable to couple the actuator to the pivot arm, where when the fastener is engaged the pivot arm is prevented from pivoting other than by the actuator, and where applying a predetermined force on the pivot arm disengages the fastener to allow the pivot arm to pivot other than by the actuator.

Abstract: The invention relates to a buoy comprising a buoyant, plastic core component, and a plurality of detachable flotation components that support and surround the core component. The buoy is preferably more than 2.5 meters diameter, but the diameter of the core component is preferably less than or equal to 2.35 meters diameter. This facilitates transport in a single shipping container. A novel tie bar assembly and novel lifting/mooring mounts are also disclosed.

Abstract: A self-inflating water rescue device (1) consisting of a belt (2) for fastening to the waist and a lifebelt (5) connected to a compressed gas cartridge (4) attached to an opening trigger (3), the belt (2) and the lifebelt (5) being connected to each other by a safety strap (9), one end of a release cord (11) is connected to the opening trigger (3), the other end of the cord (11) being routed outside the lifesaving device (1), the lifebelt (5) being provided with a release valve (12) where applicable, and characterized by that a storage pocket (8) is formed on at least a part of the outer side of the belt (2) by a fixed wall (6) and an sliding (loose) wall (7), the lifebelt (5) being arranged in the storage pocket (case) (8), the outer part of the belt (2) being itself a fixed wall (6) of the pocket (8), the lifebelt (5) has a basically interrupted perimeter circle shape, the ends (13) of which at the interruption are overlapping when filled with gas, and when not filled with gas the lifebelt (5) is folded int

Abstract: A tool interchange for a submersible remote operated vehicle (ROV) arm includes a first interchange body that affixes to an ROV arm. A second interchange body is carried by the first interchange body to rotate on a rotation axis. The second interchange body includes a tool mount actuable between gripping an ROV tool to the second interchange body and releasing the ROV tool from the second interchange body. An inductive power coupling part is provided in the tool mount. The inductive power coupling part is presented outwardly in the tool mount opposite the first interchange body, resides on the rotation axis and is fixed with respect to the first interchange body while the second interchange body rotates. The inductive power coupling part is adapted to inductively communicate power with a corresponding inductor power coupling part of the ROV tool when the ROV tool is docked in the tool mount.

Abstract: A cleat for mooring a watercraft at a thrown end of a line has a base surmounted by a body, the base being fastenable to a watercraft deck, the line having a rope and stopper formed by a transverse protuberance, the cleat having an engagement part adjoining the base and a funnel-shaped through-opening to an elongate slot in the body, the slot having a height allowing the longitudinal progression and transverse passage of the rope from the opening towards the interior of the body, the slot leading into a chamber having a minimum dimension greater than the minimum slot height, the maximum dimension of the chamber being less than the dimension of the protuberance forming the stopper so the stopper of a line passing transversely through the body can be blocked against a the body side face both with the rope in the slot and in the chamber.

Abstract: A marine engine assembly has a housing; an internal combustion engine having a crankshaft; and a driveshaft assembly driven by the crankshaft. The driveshaft assembly has: a first driveshaft having a first end operatively connected to the crankshaft; a second driveshaft having a first end connected to a second end of the first driveshaft, the first end of the second driveshaft being rotationally fixed relative to the second end of the first driveshaft, the first and second driveshafts being concentric, one of the first and second driveshafts being disposed at least in part inside another one of the first and second driveshafts, the second driveshaft extending from its first end toward the first end of the first driveshaft; and a third driveshaft having a first operatively connected to the second driveshaft. The marine engine assembly also has a propulsion device operatively connected to a second end of the third driveshaft.

Abstract: A stowable propulsion device for a marine vessel. A base is configured to be coupled to the marine vessel. A propulsor is configured to propel the marine vessel in water. An arm pivotably couples the propulsor to the base such that the propulsor is movable into and between a stowed position and a deployed position, where the propulsor is closer to the base in the stowed position than in the deployed position. A first actuator pivots the arm so as to move the propulsor into and between the stowed position and the deployed position. A second actuator is manually actuatable to pivot the arm so as to move the propulsor towards the stowed position.

Abstract: A watercraft may have a shaped charge and a gas reservoir. The gas reservoir may be adjacent to the shaped charge in a direction of action of the shaped charge. The gas reservoir can be varied in length in the direction of action of the shaped charge. Further, the shaped charge may be movable parallel to the direction of action of the shaped charge. A threaded rod can be used to move the shaped charge. In some cases a length of the gas reservoir is variable between 0.1-times and 10.0 times a diameter of the shaped charge. The watercraft may be configured in some instances as an unmanned underwater vehicle.

Abstract: The present invention discloses a flexible dynamic capturing system for an underwater moving carrier, including a shell, a front-end flexible guide apparatus, at least one tail flexible hand clamping and fastening apparatus, and a bottom retracting apparatus fastened in the shell. The front-end flexible guiding apparatus includes several flexible arms, the several flexible arms are fastened on a first rigid base in a circumferential array. The flexible arms can bend to an inner side and outer side of a circumference respectively when driven. Each tail flexible hand clamping and fastening apparatus includes several flexible claws, and the several flexible claws are divided into two groups and fastened on a second rigid base. When the flexible claws are driven, the two groups of flexible claws can bend and wind relative to each other. The bottom retracting apparatus implements lifting or lowering of the front-end flexible guide apparatus and the tail flexible hand clamping and fastening apparatus.

Abstract: A marine surface vessel includes a boarding pole for maritime boarding actions and the boarding pole is at a first end of the boarding pole, attached to a deck of the vessel via a flexible joint. The vessel includes a holding device presenting, or being arranged to present, a holding cavity arranged to receive, in a non-erected condition of the boarding pole, a boarding engagement device at a second end of the boarding pole, which second end is opposite to the first end.

Abstract: This invention relates a removable seat for watercraft 10 of the type having a hull or underside 13 and a deck 14, and wherein the deck is connected to the hull by side portions or rails 15, and said deck includes retaining means in the form of one or more recesses 20 formed in or attached to the deck. The seat includes a seat base 112 and a backrest 111, and anchoring means 130 connected to structural means supporting said backrest, said anchoring means extending generally away from a lower portion of said backrest and a rear portion of said seat base, and wherein said anchoring means is locatable within a respective one of the retaining means 20.

Abstract: Various aspects include a robot and method of using the robot, which includes a chassis and a forward propulsion auger. The chassis may include a forward section a rear section; and a maneuvering gimbal. The forward propulsion auger may be positioned on a leading end of the forward section and coupled to a first drive motor. The forward propulsion auger may include at least one fluid nozzle configured to eject a fluid therefrom.