Abstract: A system and a method for regasifing LNG aboard a carrier vessel before the re-vaporized natural gas is transferred to shore. The pressure of the LNG is boosted substantially while the LNG is in its liquid phase and before it is flowed through a vaporizer(s) which, in turn, is positioned aboard the vessel. Seawater taken from the body of water surrounding said vessel is flowed through the vaporizer to heat and vaporize the LNG back into natural gas before the natural gas is off-loaded to onshore facilities.

Abstract: A method for converting a single-hull tanker to a mid-deck configuration is disclosed. The midship cargo section of the tanker is cut longitudinally along a horizontal plane well below the normal laden water line. A spacer member including a new transverse mid-deck is interposed between the lower and upper portions of the midship cargo section. The port and starboard outer sections of the midship cargo section of the vessel are cut longitudinally away from the central portions of the midship sections of the vessel, and new longitudinal bulkheads are added. In this way the vessel is provided with port and starboard wing ballast tanks between the hull plating and the port and starboard wing cargo tanks. The center cargo tank is also divided the upper and lower sections, such that the lower section can be converted to ballast in the event double-hulled tankers become mandatory for oil transport.