A buoyant offshore structure, comprising a hull element (6a) having an inner space (10), a surface end (12) and an underwater end (14); and at least one storage tank (15a) for liquid, extending from the surface end (12) of the hull element into the inner space (10), wherein the storage tank is removable from the inner space by lifting from the hull element's surface end.

A dewatering pump support apparatus configured to buoyantly suspend a dewatering pump in a body of water in which all or some is desired to be removed. The dewatering pump support apparatus includes a main housing having at least one wall and a bottom configured to form an interior volume having an opening thereto. The main housing includes an upper perimeter edge wherein the upper perimeter edge includes flotation members secured thereto. The flotation members are circumferentially disposed around the main housing and provide buoyancy for the dewatering pump support apparatus. A strainer assembly is integrally secured to the main housing. The strainer assembly extends outward from the housing and includes a plurality of walls having a multitude of apertures formed therein. The strainer assembly further includes a flotation member and additionally can be configured with a slot allowing air into the strainer assembly.

A dewatering pump support apparatus configured to buoyantly suspend a dewatering pump in a body of water in which all or some is desired to be removed. The dewatering pump support apparatus includes a main housing having at least one wall and a bottom configured to form an interior volume having an opening thereto. The main housing includes an upper perimeter edge wherein the upper perimeter edge includes flotation members secured thereto. The flotation members are circumferentially disposed around the main housing and provide buoyancy for the dewatering pump support apparatus. A strainer assembly is integrally secured to the main housing. The strainer assembly extends outward from the housing and includes a plurality of walls having a multitude of apertures formed therein. The strainer assembly further includes a flotation member and additionally can be configured with a slot allowing air into the strainer assembly.

A jettison device isolates an object, particularly a potentially hazardous object on a ship, platform or similar object. The jettison device includes a housing with an opening configured to face towards an outside region, and a container configured to hold one or more of the objects. The jettison device further includes a container lock and a container jettison. A ship, platform or other vessel includes at least one of the jettison devices above and at least one jettison device arranged in or near a hull surface with the opening facing a region outside the hull surface.

The present invention relates to a system for collecting, lifting, and recovering seabed mineral resources, specifically, a device wherein hydrogen gas is evolved on the seabed, resources are lifted by the buoyancy of the gas to the sea surface, and the hydrogen gas which has become an excess buoyancy source during the lifting and recovering is absorbed into an organic substance including toluene, thereby yielding hydrogenated compounds including cyclomethylhexane to recover the energy required for hydrogen gas production.

The present invention relates to a system for collecting, lifting, and recovering seabed mineral resources, specifically, a device wherein hydrogen gas is evolved on the seabed, resources are lifted by the buoyancy of the gas to the sea surface, and the hydrogen gas which has become an excess buoyancy source during the lifting and recovering is absorbed into an organic substance including toluene, thereby yielding hydrogenated compounds including cyclomethylhexane to recover the energy required for hydrogen gas production.

Techniques are disclosed for systems and methods to provide floating vessels. A floating vessels is provided by assembling a hull with an integrated multi-beam keel system to a deck to form one or more sealable cavities in which various type of goods may be stored, such as food, electronics, drinks, and/or other goods that a user desires to keep segregated from surrounding water and/or environment while traveling to, from, and on a body of water, such as a pond, river, lake, or ocean, for example, or while visiting a pool. The hull, deck, and any sealing lids of for the floating vessel may be thermally insulating so as to keep goods sealed within thermally isolated from surrounding water and/or the general environment. The floating vessel may include one or more strap anchors and/or fitted slots configured to secure a portage assembly to the floating vessel to facilitate conveying the floating vessel over land to and from a body of water.

Techniques are disclosed for systems and methods to provide floating vessels. A floating vessels is provided by assembling a hull with an integrated multi-beam keel system to a deck to form one or more sealable cavities in which various type of goods may be stored, such as food, electronics, drinks, and/or other goods that a user desires to keep segregated from surrounding water and/or environment while traveling to, from, and on a body of water, such as a pond, river, lake, or ocean, for example, or while visiting a pool. The hull, deck, and any sealing lids of for the floating vessel may be thermally insulating so as to keep goods sealed within thermally isolated from surrounding water and/or the general environment. The floating vessel may include one or more strap anchors and/or fitted slots configured to secure a portage assembly to the floating vessel to facilitate conveying the floating vessel over land to and from a body of water.

A long-endurance self-powered ocean buoy includes a buoy body, a power generation device and a gas bag base; the power generation device is mounted at a lower end of the gas bag base and includes a housing, a first power generation assembly, a second power generation assembly and a storage battery; the first power generation assembly includes a plurality of mutually-communicated gas chambers, hydraulic bags and control integration units. The lowest gas chamber is filled with a volatile working medium which can generate gas pressure by volatilization to drive power generation fans in turbines on a vent pipe communicating adjacent gas chambers for power generation. The second power generation assembly includes a plurality of temperature difference energy modules with one end surrounded by a phase change material and the other end in contact with the housing, so as to increase the power generation efficiency.

A long-endurance self-powered ocean buoy includes a buoy body, a power generation device and a gas bag base; the power generation device is mounted at a lower end of the gas bag base and includes a housing, a first power generation assembly, a second power generation assembly and a storage battery; the first power generation assembly includes a plurality of mutually-communicated gas chambers, hydraulic bags and control integration units. The lowest gas chamber is filled with a volatile working medium which can generate gas pressure by volatilization to drive power generation fans in turbines on a vent pipe communicating adjacent gas chambers for power generation. The second power generation assembly includes a plurality of temperature difference energy modules with one end surrounded by a phase change material and the other end in contact with the housing, so as to increase the power generation efficiency.