Fort II Class

Replenishment Ship

The Auxiliary Oiler and Replenishment Ship has a large range of armaments, fuel and spares carried on on board. It can operate up to 5 Sea King/Lynx or Merlin Helicopters with full maintenance facilities.


At a glance

12,505 metres³

Liquids capacity


36,580 tonnes


185 metres


22 knots

Top speed

Frequent globetrotter

The auxiliary oiler and replenishment ship regularly deploys on exercise to such places as America, The Middle East and the Mediterranean.

Weapons and capabilities

DS30B 30mm Gun

Automated small calibre gun

A single mounting carrying an Oerlikon 30mm gun, it was designed as a ship-protection system to defend Royal Navy frigates from various short-range missiles, rockets, grenades and explosives. 

The gun is controlled from a remote operator console elsewhere on the ship.

Being a part of the Royal Fleet Auxiliary

3/O Brown, 30

Marine Engineer Officer

I get three months off for every four months I’m at sea. I’ve used that time to travel even more of the world – there aren’t many jobs that offer that sort of opportunity.

Click on a location to explore our operations

Middle East


Units of the Royal Navy and Royal Fleet Auxiliary have been on patrol in the Gulf since October 1980, after the Iran/Iraq conflict of that year, and more recently operations have extended further south with the increase in piracy off the Somalia coast. 


Ships, units and aircraft need periods of maintenance and sea-going trials to ensure that they are at their best for any tasks asked of them.

South Atlantic

Atlantic Patrol Tasking South

Ships and units on Atlantic Patrol Tasking provide ongoing protection and reassurance to British interests in the Atlantic, maintaining the continuous Royal Naval presence in the Atlantic.