A subsea fluids storage facility comprises a tank for holding and separating fluids which is equipped with ballast capacity and a separable base to be deployed upon the seabed in shallow or deep water, and the storage facility is connectable to a surface production facility, especially a buoy for processing fluids. In deep water the tank is held at a depth above the base for temperature controlled stabilization of produced oil in the tank.

The invention relates to an offshore hydrogen reservoir (1) comprising at least one floating hydrogen tank (2). The offshore hydrogen reservoir (1) allows hydrogen to be stored offshore at low cost and safely, in particular once the hydrogen has been generated using the electrical energy of an offshore wind farm. For this purpose, the offshore hydrogen reservoir (1) comprises a floating hydrogen tank (2) which can be disposed in the water separate from an offshore platform (10) equipped with a hydrogen generator (11).

A seabased resupply system includes a fuel containment structure containing fuel and extending fore and aft along a longitudinal axis, a pump on the fuel containment structure operable to pump the fuel, containers located on an exterior of opposite lateral sides of the fuel containment structure, and an operating system located inside one or more of the containers, the operating system comprising at least one selected from a power supply, a communication system, and a control processor.

A subsea fluids storage facility comprises a tank (11) for holding and separating fluids which is equipped with ballast capacity (14) and a separable base (12) to be deployed upon the seabed in shallow or deep water, and the storage facility is connectable to a surface production facility, especially a buoy (24) for processing fluids. In deep water the tank (11) is held at a depth above the base (12) for temperature controlled stabilization of produced oil in the tank (11).

An exemplary autonomous seabased resupply system includes an unmanned blob positioned in a water body, the blob containing fuel, a pump on the blob configured to pump the fuel through a conduit to a craft, and a ballast system operable to change a vertical position of the blob in the water body.

A mooring buoy includes a first floating body, a second body slidingly connected to the first and normally submerged, a mooring line connected to the second body by a connector housed in a seat in the first body and movable between a retracted position and a protruding position, enabling fixing the mooring line. The buoy further includes at least one chamber, in one or both of the first and second bodies, a fluid circuit admitting fluid into and out of the chamber, and a control unit connected to the fluid circuit. The control unit controls the fluid circuit to vary the amount of the fluid in the chamber, causing a variation of the immersion depth of the first body with respect to the second body or vice versa and, consequently, movement of the connecting element between the retracted and protruding positions.

An aquatic transportation, storage, and distribution system, including one or more storage containers and a guide structure. The storage container is capable of retaining one or more items therein and is configured to selectively vary the buoyancy thereof to urge the storage container to float up or sink down within an aquatic environment. The guide structure is supported at least partially within the aquatic environment and includes at least one non-horizontal segment. The storage container is configured to interact with the at least one segment as the storage container is urged to float up or sink within the aquatic environment such that the storage container is moved along the guide structure and is routed to a specified extraction point for retrieval from the aquatic environment.

An aquatic transportation, storage, and distribution system, including one or more storage containers and a guide structure. The storage container is capable of retaining one or more items therein and is configured to selectively vary the buoyancy thereof to urge the storage container to float up or sink down within an aquatic environment. The guide structure is supported at least partially within the aquatic environment and includes at least one non-horizontal segment. The storage container is configured to interact with the at least one segment as the storage container is urged to float up or sink within the aquatic environment such that the storage container is moved along the guide structure and is routed to a specified extraction point for retrieval from the aquatic environment.

An exemplary autonomous seabased resupply system includes an unmanned blob positioned in a water body, the blob containing fuel, a pump on the blob configured to pump the fuel through a conduit to a craft, and a ballast system operable to change a vertical position of the blob in the water body.

A mooring buoy includes a first floating body, a second body slidingly connected to the first and normally submerged, a mooring line connected to the second body by a connector housed in a seat in the first body and movable between a retracted position and a protruding position, enabling fixing the mooring line. The buoy further includes at least one chamber, in one or both of the first and second bodies, a fluid circuit admitting fluid into and out of the chamber, and a control unit connected to the fluid circuit. The control unit controls the fluid circuit to vary the amount of the fluid in the chamber, causing a variation of the immersion depth of the first body with respect to the second body or vice versa and, consequently, movement of the connecting element between the retracted and protruding positions.