FSRU — floating storage and regasification unit

Class overview

An FSRU stores LNG like a carrier and vaporises it on board, sending high-pressure natural gas ashore through a jetty or turret riser. Because the unit is a ship, an import terminal can be commissioned in months rather than the years an onshore terminal requires.

Classification

Operational role

FSRU

Containment system

GTT Mark III Membrane · GTT NO96 Membrane · Moss / Spherical Self-Supporting Type B

Tank geometry

Membrane or spherical tanks with a regasification topside

Capacity class

Conventional — indicative: approximately 125,000–180,000 m³

Propulsion options

DFDE / TFDE · Steam turbine

BOG management

BOG as fuel · Reliquefaction · Gas combustion unit

Key systems

Operational environment

Moored at an import location for long periods, receiving cargo by ship-to-ship transfer.

Safety and operational considerations

• Ship-to-ship transfer requires compatibility checks, mooring analysis and an agreed ESD link.
• Regasification topsides add high-pressure gas systems to a vessel that also holds cryogenic cargo.
• Station-keeping limits are set by mooring design and local metocean conditions.