A navigational buoy that includes a finned, hollow, transparent, spherical shell that floats on water. A multi-wheeled motor-unit sits inside the shell, and ballast weights attached to the motor unit cause it to rest on the bottom of the shell. A biasing structure attached to the motor unit, lights, and other aspects are included in some embodiments.

A navigational buoy that includes a finned, hollow, transparent, spherical shell that floats on water. A multi-wheeled motor-unit sits inside the shell, and ballast weights attached to the motor unit cause it to rest on the bottom of the shell. A biasing structure attached to the motor unit, lights, and other aspects are included in some embodiments.

The purpose of this disclosure is to easily calculate draft information with a simple configuration. The draft information generation device (10) comprises multiple range-finding sensors (20) and an information processor module (30). The range-finding sensor (20) is mounted on the side of a vessel (80) and measures the distance to water surface (91) using a range-finding signal. The information processor module (30) calculates draft height Hdr using the distance to the water surface (91) and the mold depth Hmd of the vessel (80).

The purpose of this disclosure is to easily calculate draft information with a simple configuration. The draft information generation device (10) comprises multiple range-finding sensors (20) and an information processor module (30). The range-finding sensor (20) is mounted on the side of a vessel (80) and measures the distance to water surface (91) using a range-finding signal. The information processor module (30) calculates draft height Hdr using the distance to the water surface (91) and the mold depth Hmd of the vessel (80).

A floating platform for supporting generators of power derived from the wind, the waves and ocean currents, adopting an approximately disc-shaped general configuration with a circular or polygonal perimeter, which optimises its size and therefore minimises substantially its weight and likewise its production costs, as well as other associated complexities; which eliminates the possibility of entering into resonance with the movement of the ocean waves and thus not damaging the equipment installed, not overturning, and not surpassing the maximum list acceptable for wind power generators, nor wave power generators, nor ocean current generators; and which withstands the waves of the greatest size possible, all due to a ratio between its depth or height (13) and the diameter (14) thereof of between 0.06 and 0.35.

A marine vessel management system to reduce the burden on a marine vessel rental business operator includes a marine vessel, an information processor, and a portable terminal device operable by a marine vessel user. When the marine vessel is leaving a port and/or when the marine vessel is returning to the port, the portable terminal device receives information about a state of the marine vessel via the information processor, and displays the received information about the state of the marine vessel.

A marine vessel management system to reduce the burden on a marine vessel rental business operator includes a marine vessel, an information processor, and a portable terminal device operable by a marine vessel user. When the marine vessel is leaving a port and/or when the marine vessel is returning to the port, the portable terminal device receives information about a state of the marine vessel via the information processor, and displays the received information about the state of the marine vessel.

A method of installing one or more anchors in an underwater substrate in a body of water including installing an anchor into the underwater substrate by rotating an anchor installation vehicle about a central axis Y to drive the anchor coupled to the anchor installation vehicle into the underwater substrate. The anchor installation vehicle includes a vehicle frame having a top end and bottom end, a plurality of arms extending outward from the vehicle frame, one or more rotational thrusters disposed at distal ends of the respective arms, and an anchor system that holds the anchor extending from the bottom end of the vehicle frame with the anchor aligned with a central axis Y.

A method of installing one or more anchors in an underwater substrate in a body of water including installing an anchor into the underwater substrate by rotating an anchor installation vehicle about a central axis Y to drive the anchor coupled to the anchor installation vehicle into the underwater substrate. The anchor installation vehicle includes a vehicle frame having a top end and bottom end, a plurality of arms extending outward from the vehicle frame, one or more rotational thrusters disposed at distal ends of the respective arms, and an anchor system that holds the anchor extending from the bottom end of the vehicle frame with the anchor aligned with a central axis Y.

A dynamic active control system (DACS) configured for: (1) total vessel pitch axis control by fast symmetric deployment of water engagement devices (WEDs) or controllers, coupled with engine trim adjustments; (2) total roll and heading control by differentially deploying WEDs to counter rolling motions while simultaneously adjusting engine steering position to counter the steering moment associated with WED delta position; and (3) adjustment of the engine steering angle to counter yaw moments produced by gyroscopic stabilization systems.