Ammonia fuel supply system

Oil tankers

Chemical tankers

LNG carriers

LPG, ethylene, ethane, ammonia, CO2, hydrogen and gas-bunkering carriers

Bulk carriers and specialised dry-bulk carriers

General and specialised break-bulk cargo ships

Multipurpose, open-hatch, deck, heavy-lift and heavy-transport ships

Container ships

Ro-ro cargo and vehicle carriers

Refrigerated cargo ships

Fishing vessels, factory trawlers and live-fish carriers

Cruise and passenger ships

Ro-ro passenger ferries

PSV, AHTS, OSV/SOV and CTV

Cable, pipe, diving, subsea construction, WTIV and intervention vessels

Drillship, FPSO, FSO, FSU, FLNG and FSRU

Dredgers and hopper dredgers

Tugs, ERRV/standby, pilot and search-and-rescue craft

Research, hydrographic, seismic and icebreaking vessels

Large yachts and superyachts

Patrol and government service vessels

Ammonia fuel tanks

Refrigerated or pressurised tanks holding ammonia fuel, surrounded by barriers because the hazard here is acute toxicity.

Fuel transfer pumps

Pumps moving liquid ammonia from storage toward the conditioning equipment.

Fuel-conditioning / vaporizer unit

The unit warming and pressurising ammonia to the engine's supply condition.

Double-wall fuel piping

Contained piping whose ventilated annulus captures and detects any ammonia leak before it can reach people.

Bunkering connection

The bunkering station with closed transfer, vapour return and emergency release suited to a toxic fuel.

Ventilation and toxic-gas detection

Ventilation plus detectors set at toxicity thresholds far below the flammability limits that govern other fuels.

ESD valves

Fail-closed valves isolating the ammonia supply instantly on detection or alarm.

Fuel-control system

The controls governing ammonia delivery to the engines and the safe purge of the system when stopping.