An unmanned undersea vehicle including a magnetic coupler drive. The magnetic coupler drive is incorporated into a hull section, such as a tail section of the unmanned undersea vehicle. The magnetic coupler drive includes a motor shaft magnet, a titanium housing disposed about the motor shaft magnet, and a propeller shaft magnet magnetically coupled to the motor shaft magnet, but physically separated from the propeller shaft magnet by the titanium housing.

A method for controlling the saturation level of gas in a liquid discharge includes obtaining temperature and pressure measurements of a solvent in a mixing vessel and obtaining a pressure measurement of a source feedstock in a feedstock tank, correlating the temperature and pressure measurements of the solvent to baseline data to generate a theoretical uptake rate for the source feedstock into the solvent and a theoretical flow rate of the source feedstock into the mixing vessel, and determining a required opening setting for a feedstock valve in the feedstock input line in order to achieve a desired liquid displacement in the mixing vessel. The method includes determining an uptake duration and achieving an uptake displacement equivalent to the reverse of the desired liquid displacement. The method includes generating a valve operating control law for how the feedstock valve should function in a cycle.

A method for controlling the saturation level of gas in a liquid discharge includes obtaining temperature and pressure measurements of a solvent in a mixing vessel and obtaining a pressure measurement of a source feedstock in a feedstock tank, correlating the temperature and pressure measurements of the solvent to baseline data to generate a theoretical uptake rate for the source feedstock into the solvent and a theoretical flow rate of the source feedstock into the mixing vessel, and determining a required opening setting for a feedstock valve in the feedstock input line in order to achieve a desired liquid displacement in the mixing vessel. The method includes determining an uptake duration and achieving an uptake displacement equivalent to the reverse of the desired liquid displacement. The method includes generating a valve operating control law for how the feedstock valve should function in a cycle.

Various embodiments of a submerged sailing vessel are disclosed. Such a submerged sailing vessel may comprise a submersible hull assembly, a keel coupled to and extending upwards from hull assembly towards a water surface, and a wind-catching assembly coupled to and extending upwards into the air from the keel for propelling the submerged sailing vessel. The hull assembly and keel are submerged below the water surface as the vessel is propelled by the wind-catching assembly above the water surface.

Various embodiments of a submerged sailing vessel are disclosed. Such a submerged sailing vessel may comprise a submersible hull assembly, a keel coupled to and extending upwards from hull assembly towards a water surface, and a wind-catching assembly coupled to and extending upwards into the air from the keel for propelling the submerged sailing vessel. The hull assembly and keel are submerged below the water surface as the vessel is propelled by the wind-catching assembly above the water surface.

A submersible vehicle for collecting material from a seafloor includes a chassis. A module may be supported on the chassis, the module including an electric power supply. A drive system may be supported on the chassis, the drive system including a battery, and a propulsion assembly, the battery in electrical communication with the electric power supply and the propulsion assembly, and the propulsion assembly operable to locate the chassis relative to a seafloor. A power tool may be coupled to the chassis, the power tool operable to collect material from the seafloor. A reactor may be supported on the chassis, the reactor defining a reaction chamber. A valve assembly may be actuatable to move a hydrogen-containing gas from the reaction chamber and direct the hydrogen-containing gas to one or more of the electric power supply or the power tool.

A submersible vehicle for collecting material from a seafloor includes a chassis. A module may be supported on the chassis, the module including an electric power supply. A drive system may be supported on the chassis, the drive system including a battery, and a propulsion assembly, the battery in electrical communication with the electric power supply and the propulsion assembly, and the propulsion assembly operable to locate the chassis relative to a seafloor. A power tool may be coupled to the chassis, the power tool operable to collect material from the seafloor. A reactor may be supported on the chassis, the reactor defining a reaction chamber. A valve assembly may be actuatable to move a hydrogen-containing gas from the reaction chamber and direct the hydrogen-containing gas to one or more of the electric power supply or the power tool.

Disclosed is a capsular-type underwater release lifeboat that can be operated in davit mode, freefall mode and underwater mode. The lifeboat comprised of an outer shell, and fitted inside with engines that aid in forced and normal propulsions of the lifeboat. Two air pockets are arranged in both the ends of the outer shell to sustain underwater pressure and to aid increased buoyancy of the lifeboat. A fixed Emergency Positioning Indicating Radio Beacon (EPIRB) is provided inside the lifeboat for rescuers to easily locate the survivors and a double water tight entrance door is formed on the top portion to resist the underwater pressure. The present invention also provides a method for releasing the lifeboat underwater. The reinforced lifeboat discussed herein shall be deployed on the sea and also underwater in order to rescue the people during a disaster in the sea vessel.

Disclosed is a capsular-type underwater release lifeboat that can be operated in davit mode, freefall mode and underwater mode. The lifeboat comprised of an outer shell, and fitted inside with engines that aid in forced and normal propulsions of the lifeboat. Two air pockets are arranged in both the ends of the outer shell to sustain underwater pressure and to aid increased buoyancy of the lifeboat. A fixed Emergency Positioning Indicating Radio Beacon (EPIRB) is provided inside the lifeboat for rescuers to easily locate the survivors and a double water tight entrance door is formed on the top portion to resist the underwater pressure. The present invention also provides a method for releasing the lifeboat underwater. The reinforced lifeboat discussed herein shall be deployed on the sea and also underwater in order to rescue the people during a disaster in the sea vessel.

An underwater liquid supply unit includes a first bladder containing a first liquid, a second bladder containing a second liquid, and a third bladder containing a third liquid. The combined volume of the first liquid, second liquid, and third liquid is neutrally buoyant relative to a surrounding medium the liquid supply unit is disposed in (e.g., in seawater). As the first liquid, second liquid, and third liquid are dispensed from the bladders, the bladders may reduce in size in at least one dimension. As the liquids are dispensed, the liquids may be dispensed in a predetermined volumetric ratio based on the density of the liquids to maintain neutral buoyancy of the combined volume of liquid. The underwater liquid supply unit may also include an integrated generator such as a fuel cell, as well as a propeller.