A motorized inflatable raft includes independently controllable propellers to propel the raft. The propellers are part of a propeller control assembly that includes a power source and a joystick for control. Direction of motion is controlled by rotating independent propeller control assemblies using a joystick controller. Power is supplied by batteries in a battery housing, and application of power to the propellers is controlled by the joystick. Assembly is simplified using an easily screwed screw cap that securely fastens a battery housing that is connected through tubing to the propeller to the joystick controller.

The present invention includes an apparatus and method for volumetric and gravimetric storage of reactants and waste comprising: one or more reactant or fuel storage bladders; and one or more waste storage bladders, wherein the reactant or fuel storage bladders and the waste storage bladders form a stack of bladders, and the stack of bladders are interleaved between the reactant or fuel storage bladders and the waste storage bladders, such that both a volumetric and a gravimetric balance is maintained as reactant or fuel are used and the waste bladder is filled.

The present invention includes an apparatus and method for volumetric and gravimetric storage of reactants and waste comprising: one or more reactant or fuel storage bladders; and one or more waste storage bladders, wherein the reactant or fuel storage bladders and the waste storage bladders form a stack of bladders, and the stack of bladders are interleaved between the reactant or fuel storage bladders and the waste storage bladders, such that both a volumetric and a gravimetric balance is maintained as reactant or fuel are used and the waste bladder is filled.

A small watercraft includes an input, a second storage, and a controller. The input receives an operation to switch the small watercraft into one of a plurality of control states, and includes a first storage that stores first control information indicating the one of the plurality of control states associated with the operation received by the input. The second storage stores second control information indicating one of the plurality of control states. The controller is able to write to one of the first and second storages. The input is supplied with electric power by supplying the controller with the electric power. When the one of the plurality of control states indicated by the first control information is different from the one of the plurality of control states indicated by the second control information, the controller causes one of the first control information and the second control information stored in the one of the first and second storages to match the other of the first control information and the second control information stored in the other of the first and second storages.

Techniques for providing instructions to an operator of a sea vessel via a computing device are described. The computing device can request, from another computing device, instructions regarding one or more of an intended course and action plan for the sea vessel, which can include at least one navigational instruction and/or deployment instruction. The computing device can send data to a display device to cause a prompt to be displayed. The prompt can include options regarding the at least one instruction. The computing device can send state information of the sea vessel to the other computing device. The state information can include the received input and location information of the sea vessel. Additionally, data can be received by the computing device from a shore based operator and data can be sent to one or more clients on shore.

The purpose of the present invention is to provide a gas engine and a ship provided with the same, the gas engine making it is possible to ensure a distance that enables fuel and an oxidizing agent to mix, and to evenly mix the oxidizing agent and the fuel even if the flow rate of gas traveling towards intake pipes varies. A gas engine (1) comprises: an intake passage (10) through which a gas flows; a plurality of intake pipes (12A, 12B) where the intake passage (10) branches apart at a branching section (14) that is downstream in the gas flow direction, the intake pipes opening to a cylinder (16) at the downstream end; and a fuel injection means (31) that injects fuel into the intake passage (10). The fuel injection means (31) is provided upstream of the branching section (14) in the gas flow direction, and injects varying quantities of fuel into the plurality of intake pipes (12A, 12B).

The purpose of the present invention is to provide a gas engine and a ship provided with the same, the gas engine making it is possible to ensure a distance that enables fuel and an oxidizing agent to mix, and to evenly mix the oxidizing agent and the fuel even if the flow rate of gas traveling towards intake pipes varies. A gas engine (1) comprises: an intake passage (10) through which a gas flows; a plurality of intake pipes (12A, 12B) where the intake passage (10) branches apart at a branching section (14) that is downstream in the gas flow direction, the intake pipes opening to a cylinder (16) at the downstream end; and a fuel injection means (31) that injects fuel into the intake passage (10). The fuel injection means (31) is provided upstream of the branching section (14) in the gas flow direction, and injects varying quantities of fuel into the plurality of intake pipes (12A, 12B).

The present invention includes an underwater vehicle power unit and method of operating the same comprising: a fuel and waste stack comprising one or more reactant or fuel storage bladders and one or more waste storage bladders that are volumetrically and gravitationally balanced during operation; a fuel reactor that generates hydrogen; a fuel cell capable of generating an electrical current when exposed to hydrogen; and a controller that controls the flow of fuel into the hydrogen generator, the flow of hydrogen into the fuel cell and the flow of waste from the hydrogen generator, and/or the fuel cell into the one or more waste storage bladders.

The present invention includes an underwater vehicle power unit and method of operating the same comprising: a fuel and waste stack comprising one or more reactant or fuel storage bladders and one or more waste storage bladders that are volumetrically and gravitationally balanced during operation; a fuel reactor that generates hydrogen; a fuel cell capable of generating an electrical current when exposed to hydrogen; and a controller that controls the flow of fuel into the hydrogen generator, the flow of hydrogen into the fuel cell and the flow of waste from the hydrogen generator, and/or the fuel cell into the one or more waste storage bladders.

A computing apparatus that is integrated within a flotation module, the system obtaining the energy required to power its computing operations from waves that travel across the surface of a body of water on which the flotation module sets. Additionally, the self-powered computing apparatus employs novel designs to utilize its close proximity to the body of water and/or to strong ocean winds to significantly lower the cost and complexity of cooling their computing circuits.