A compressed air tank for sinking prevention comprises a compressed air tank having a valve; and an air pocket coupled to the compressed air tank and being filled with air discharged from the compressed air tank when the valve is opened, wherein buoyancy is provided to a cabin that is being flooded through the air pocket to prevent a ship from foundering.

The invention discloses a universal offshore platform. The platform includes a truss body forming the support system of the platform. the truss body is a three-dimensional stable rigid support and comprises an underwater surface layer, a water surface layer and an overwater surface layer from bottom to top. It comprises a first floating body component, a second floating body component and several sporadic single floating bodies. The universal offshore platform of the present invention can be used independently, be used as a constitutional unit of a marine base and is less adversely affected by the wave motion. A buoyancy regulation method based on a universal offshore platform ensures stability of the platform and a power generation system based on the universal offshore platform takes full advantage of the energy of the waves to generate electricity.

The invention discloses a universal offshore platform. The platform includes a truss body forming the support system of the platform. the truss body is a three-dimensional stable rigid support and comprises an underwater surface layer, a water surface layer and an overwater surface layer from bottom to top. It comprises a first floating body component, a second floating body component and several sporadic single floating bodies. The universal offshore platform of the present invention can be used independently, be used as a constitutional unit of a marine base and is less adversely affected by the wave motion. A buoyancy regulation method based on a universal offshore platform ensures stability of the platform and a power generation system based on the universal offshore platform takes full advantage of the energy of the waves to generate electricity.

An inundation prevention system for ship is provided. The inundation prevention system for ship includes a fire-extinction gas ejection part configured to eject a fire extinction gas to an installation area prepared in a hull, an airbag part of 3D shape disposed in the installation area, and an airbag actuation part configured to supply the fire extinction gas to the airbag part, if inundation occurs in the installation are, and to inflate the airbag in the installation for compulsory buoyancy.

An inundation prevention system for ship is provided. The inundation prevention system for ship includes a fire-extinction gas ejection part configured to eject a fire extinction gas to an installation area prepared in a hull, an airbag part of 3D shape disposed in the installation area, and an airbag actuation part configured to supply the fire extinction gas to the airbag part, if inundation occurs in the installation are, and to inflate the airbag in the installation for compulsory buoyancy.

A flyable sailboat includes: a floating member, having a front support, a rear support and one or more air pumps, wherein the top end of the front support is installed with at least one rotating device; one or more rear flaps, installed at the tail end of the floating member and respectively including a horizontal flap and a rotating vertical rudder; two or more lateral flaps, respectively extended from two lateral sides of the floating member; at least one wind resisting device, installed on the rotating device and including at least one sail, at least one boom rod and at least one horizontal rod, wherein the center of the sail is installed with the boom rod having a tail rod and fastened on the rotating device; and one or more power devices, installed at the tail end or at two lateral sides of the floating member.

A flyable sailboat includes: a floating member, having a front support, a rear support and one or more air pumps, wherein the top end of the front support is installed with at least one rotating device; one or more rear flaps, installed at the tail end of the floating member and respectively including a horizontal flap and a rotating vertical rudder; two or more lateral flaps, respectively extended from two lateral sides of the floating member; at least one wind resisting device, installed on the rotating device and including at least one sail, at least one boom rod and at least one horizontal rod, wherein the center of the sail is installed with the boom rod having a tail rod and fastened on the rotating device; and one or more power devices, installed at the tail end or at two lateral sides of the floating member.

An inundation prevention system for ship is provided. The inundation prevention system for ship includes a fire-extinction gas ejection part configured to eject a fire extinction gas to an installation area prepared in a hull, an airbag part of 3D shape disposed in the installation area, and an airbag actuation part configured to supply the fire extinction gas to the airbag part, if inundation occurs in the installation are, and to inflate the airbag in the installation for compulsory buoyancy.

An inundation prevention system for ship is provided. The inundation prevention system for ship includes a fire-extinction gas ejection part configured to eject a fire extinction gas to an installation area prepared in a hull, an airbag part of 3D shape disposed in the installation area, and an airbag actuation part configured to supply the fire extinction gas to the airbag part, if inundation occurs in the installation are, and to inflate the airbag in the installation for compulsory buoyancy.

A compressed air tank for sinking prevention comprises a compressed air tank having a valve; and an air pocket coupled to the compressed air tank and being filled with air discharged from the compressed air tank when the valve is opened, wherein buoyancy is provided to a cabin that is being flooded through the air pocket to prevent a ship from foundering.