Objects of the present invention are provide as evaluation method of ship propulsive performance in actual seas, an evaluation program of ship propulsive performance in actual seas and an evaluation. system of ship propulsive performance in actual seas capable of precisely evaluating ship propulsive performance in actual seas on the same scale also before the ship sails for example. As solving means of the objects, a standard sailing model 2 of the ship in actual seas is set, a sailing condition of the ship and a ship condition of the ship are input to the standard sailing model 2, the standard sailing model 2 into which the sailing condition and the ship condition are input and the ship condition are applied to a previously verified calculating method 1 of ship performance is actual seas, and ship propulsive performance in actual seas is evaluated.

Objects of the present invention are provide as evaluation method of ship propulsive performance in actual seas, an evaluation program of ship propulsive performance in actual seas and an evaluation. system of ship propulsive performance in actual seas capable of precisely evaluating ship propulsive performance in actual seas on the same scale also before the ship sails for example. As solving means of the objects, a standard sailing model 2 of the ship in actual seas is set, a sailing condition of the ship and a ship condition of the ship are input to the standard sailing model 2, the standard sailing model 2 into which the sailing condition and the ship condition are input and the ship condition are applied to a previously verified calculating method 1 of ship performance is actual seas, and ship propulsive performance in actual seas is evaluated.

An entertainment barge includes at least two pontoons, a first deck having a front, rear, right side and left side, is attached to both pontoons. A second deck is disposed above and substantially parallel to the first deck. At least two retractable spuds are attached to the deck and are adapted to be lowered into the water to secure the barge in a fixed position.

An entertainment barge includes at least two pontoons, a first deck having a front, rear, right side and left side, is attached to both pontoons. A second deck is disposed above and substantially parallel to the first deck. At least two retractable spuds are attached to the deck and are adapted to be lowered into the water to secure the barge in a fixed position.

Disclosed is a vehicle with only two parallel independent drive wheels, capable of moving on a solid or semi-solid ground, as well as on water if provided with blades on the wheels. The vehicle is stable in that it has a unit for lowering the center of gravity, which are housed in the wheels, which are in turn internally hollow for this purpose.

Disclosed is a vehicle with only two parallel independent drive wheels, capable of moving on a solid or semi-solid ground, as well as on water if provided with blades on the wheels. The vehicle is stable in that it has a unit for lowering the center of gravity, which are housed in the wheels, which are in turn internally hollow for this purpose.

Disclosed is a vehicle with only two parallel independent drive wheels, capable of moving on a solid or semi-solid ground, as well as on water if provided with blades on the wheels. The vehicle is stable in that it has a unit for lowering the center of gravity, which are housed in the wheels, which are in turn internally hollow for this purpose.

Disclosed is a vehicle with only two parallel independent drive wheels, capable of moving on a solid or semi-solid ground, as well as on water if provided with blades on the wheels. The vehicle is stable in that it has a unit for lowering the center of gravity, which are housed in the wheels, which are in turn internally hollow for this purpose.

A boat, having a transom, includes one or more aft-facing seats. Each aft-facing seat is positioned proximate to the transom and includes a seat bottom that is inclined at a downward angle in a direction extending from aft to fore, a seatback, a headrest, a seat support structure having at least one hidden compartment therein, and at least one pivot mechanism attached to the seatback and the headrest and configured to allow the seatback to move between a first position in which the seatback is capable of supporting the back of a person seated in the seat and a second position in which the seatback is pivoted upwardly to allow access to the compartment and the headrest to move between an upright position and a folded position. A plurality of handles may be provided for each aft-facing seat, with one at an outboard side and another at an inboard side.

An energy storage apparatus including a spherical rotating member having permanent magnets and uniquely-identifiable location-defining elements, a plurality of coils, a controller operably coupled to the plurality of coils, a power source, and a location sensing apparatus operable to detect the plurality of location-defining elements. The controller may compare time-sequential information from the location sensing apparatus to determine a rotational axis and a rotational speed of the rotating member, operate the coils to change the rotational axis speed of the rotating member, increase energy stored by the rotating member by increasing the rotational speed by operating the coils to generate magnetic fields that interact with the permanent magnets, and withdraw energy by operating the coils to generate magnetic fields that interact with the magnetic fields of the permanent magnets to produce induced current in the coils and directing the induced current to a power delivery location.