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.

A gas supply marine vessel and a refueling facility are described. The gas supply marine vessel includes a hull with an upper deck having an elongated cargo cavity formed therein. Gas interface modules are disposed in the cavity and extend between hull sides, each module having a plurality of fuel vessel docking stations. A plurality of stacked fuel container assemblies are fluidically coupled to the docking stations. A gantry, is movable along the length of the cavity, straddles the cargo cavity between hull sides. An articulating crane is mounted on the gantry and it utilized to move fuel container assemblies to a fuel container depression formed in the deck of a floating refueling facility. The floating refueling facility includes a concave side to facilitate mooring adjacent a shoreline, the concave side forming angled extensions at corners of the deck with a linkspan extending from each of the angled extensions.

A method of transferring a storage medium loaded on a power generation float from a float that generates electricity on the ocean to a transport vessel on the ocean includes a first process of fixing the power generation float to the transport vessel so that a height of a loading place of the storage medium of the power generation float is higher than a height of a storage place of the storage medium of the transport vessel, a second process of forming a first path in which the storage medium can move between the loading place of the storage medium of the power generation float and the storage place of the storage medium of the transport vessel, and a third process of moving the storage medium from the loading place of the power generation float to the storage place of the transport vessel by gravity through the first path.