For RAS tasking, they can refuel a vessel on either beam and a third trailing astern and have a large flight deck to allow vertical replenishment with helicopters.

The final two had minor changes including improved accommodation and different stern anchor arrangements.

[6] These ships were all designed to replenish warships underway with diesel, aviation fuel, lubricating oil and fresh water.

[6] Additionally, to facilitate VERTREP (vertical replenishment) operations, the Rover-class tankers also had a helicopter flight deck which was located behind the accommodation structure and they were fitted with an aircraft refuelling facility, but the vessels had no aircraft hangar available.

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