A wind-wave-resistant floating offshore photovoltaic device includes a photovoltaic array and a mooring unit; the mooring unit used for limiting the position of the photovoltaic array is arranged on two sides and the head of the photovoltaic array, the photovoltaic array includes a breaking-wave base device arranged on a wave facing face, resonance wave absorbing floating body units arranged in a middle and common floating body units arranged on a wave shielding face, and the whole formed by connecting the plurality of resonance wave absorbing floating body units is connected to the breaking-wave base device by means of rubber ring type connectors.

A wind-wave-resistant floating offshore photovoltaic device includes a photovoltaic array and a mooring unit; the mooring unit used for limiting the position of the photovoltaic array is arranged on two sides and the head of the photovoltaic array, the photovoltaic array includes a breaking-wave base device arranged on a wave facing face, resonance wave absorbing floating body units arranged in a middle and common floating body units arranged on a wave shielding face, and the whole formed by connecting the plurality of resonance wave absorbing floating body units is connected to the breaking-wave base device by means of rubber ring type connectors.

A floating structure for transport is presented, formed by a train arrangement of rotary bodies of revolution that reduces the drag of same during sailing, the train arrangement of rotary bodies being formed by a front body, intermediate bodies and a rear body that have rotation synchronized with the speed of travel of the structure, the intermediate bodies of revolution being connected together by longitudinal rotation shafts by connections secured to an upper platform, while the longitudinal rotation shafts of the front body and the rear body are connected to the rotation shafts of adjacent bodies by hinges, which are pivotably connected to an end of draft-adjustor, pivotably connected at their other ends to the upper platform, the longitudinal rotation shafts being disposed perpendicular to the structure's travel direction and associated with actuators. The rotary bodies are separated by a distance of approximately 5% or less of their diameter.

A floating structure for transport is presented, formed by a train arrangement of rotary bodies of revolution that reduces the drag of same during sailing, the train arrangement of rotary bodies being formed by a front body, intermediate bodies and a rear body that have rotation synchronized with the speed of travel of the structure, the intermediate bodies of revolution being connected together by longitudinal rotation shafts by connections secured to an upper platform, while the longitudinal rotation shafts of the front body and the rear body are connected to the rotation shafts of adjacent bodies by hinges, which are pivotably connected to an end of draft-adjustor, pivotably connected at their other ends to the upper platform, the longitudinal rotation shafts being disposed perpendicular to the structure's travel direction and associated with actuators. The rotary bodies are separated by a distance of approximately 5% or less of their diameter.

An intentional fluid manipulation apparatus (IFMA) assembly with a first thrust apparatus that imparts a first induced velocity to a local free stream flow during a nominal operation requirement. The first thrust apparatus creates a streamtube. A second thrust apparatus is located in a downstream portion of the streamtube. The second thrust apparatus imparts a second induced velocity to the local free stream flow. The second induced velocity at the location of the second thrust apparatus has a component in a direction opposite to the direction of the first induced velocity at the location of the second thrust apparatus.

An intentional fluid manipulation apparatus (IFMA) assembly with a first thrust apparatus that imparts a first induced velocity to a local free stream flow during a nominal operation requirement. The first thrust apparatus creates a streamtube. A second thrust apparatus is located in a downstream portion of the streamtube. The second thrust apparatus imparts a second induced velocity to the local free stream flow. The second induced velocity at the location of the second thrust apparatus has a component in a direction opposite to the direction of the first induced velocity at the location of the second thrust apparatus.

An arrangement for reducing resistance to the advance of a vessel its navigation includes:

at least one rotating body of revolution attached to the vessel by support and draft control means associated with its longitudinal rotation axis which is arranged perpendicular to the direction of advance of said vessel, and associated with driving means, the at least one rotating body of revolution located in front of the bow or behind the stern of said vessel. The rotation of rotating body of revolution is synchronized with the vessel’s forward speed. The rotating body of revolution closest to the hull of the vessel is separated from the hull by a clearance of approximately 5% or less of its maximum diameter. The support and draft control means are forks associated with pistons and maintain the rotating body of revolution submerged in the order of 30% of its maximum diameter during navigation.

An arrangement for reducing resistance to the advance of a vessel its navigation includes:

at least one rotating body of revolution attached to the vessel by support and draft control means associated with its longitudinal rotation axis which is arranged perpendicular to the direction of advance of said vessel, and associated with driving means, the at least one rotating body of revolution located in front of the bow or behind the stern of said vessel. The rotation of rotating body of revolution is synchronized with the vessel’s forward speed. The rotating body of revolution closest to the hull of the vessel is separated from the hull by a clearance of approximately 5% or less of its maximum diameter. The support and draft control means are forks associated with pistons and maintain the rotating body of revolution submerged in the order of 30% of its maximum diameter during navigation.

The present invention relates to a fluid resistance reduction apparatus for a ship, and more particularly, to an apparatus for reducing fluid resistance of a ship, the apparatus capable of significantly reducing wave-making resistance as well as frictional resistance caused by seawater during navigation of a ship, thus improving the speed, allowing stable navigation, and saving fuel, wherein the fluid resistance reduction apparatus is disposed below the draft line of the hull and allows the ship to proceed while seawater is introduced through the bow due to rotation of a propeller disposed on the hull and is discharged through the back of the stern, thereby significantly reducing frictional resistance and wave-making resistance of seawater.

To provide an amphibious vehicle that can reduce wave drag at the time of hydroplaning and can improve propulsion performance of the vehicle body. An amphibious vehicle according to the present invention includes a vehicle body capable of moving on water and on land, a front flap with a rear end being fixed to a lower end of the vehicle body, a rear flap with a front end being fixed to a rear part of the vehicle body, and a pair of keels provided along a travel device provided on both sides of the vehicle body on a bottom surface of the vehicle body.