Client: Royal Fleet Auxiliary

Value: £50 K +

Completion:  2009


Royal Fleet Auxiliary

Project Name

RFA Diligence

Project Address




Main/Principle Contractor

Babcock (MEF) International

M&E Consultants

Babcock (MEF) International


7 Years Programme


£50 K + Per Annum

Description Of Works

RFA Diligence is a forward repair ship of the Royal Fleet Auxiliary. Launched in 1981 as a support ship for North Sea oil rigs, she was chartered by the British government to support naval activities during the 1982 Falklands War and was later bought outright as a fleet maintenance vessel and She is set to go out of service in 2020.

Diligence was built by Öresundsvarvet AB, in Landskrona, Sweden and launched in 1981 as a civilian oil rig support ship. She first served the Royal Fleet Auxiliary (RFA) during the Falklands War as a civilian owned ship taken up from the trade (STUFT). As MV Stena Inspector, the ship repaired many British vessels. Stena Inspector was purchased by the Government in 1983 for £25 million from Stena Offshore UK and renamed Diligence. She was sailed to the Clyde Dock Engineering facility, where she was converted and military features added, including a large workshop for hull and machinery repairs, supply facilities, accommodation, armaments and magazines and communications fits.

She is designed to provide forward repair and maintenance facilities to ships and submarines operating away from their home ports, so in addition to a variety of workshops she can also provide overside electrical supplies, fuel, water and sullage reception. Diligence provides a large workshop facility for Royal Navy vessels, this is equipped with specialist machinery such as arc welding equipment, lathes, pillar drills, grinders, band saws and a large store of spares.

Diligence is the Royal Navy’s primary battle damage repair unit, and is on short notice to react to developing situations worldwide. One of the key features of the ship’s design is her computer-assisted dynamic positioning system which can keep the vessel static in poor conditions, using the ship’s range of thrusters and the variable-pitch propeller.

The ship has a helicopter deck on the roof of her bridge that is large enough to support a CH-47 Chinook. Her hull is built to the highest ice class specification, which allows her to navigate polar regions without the assistance of an icebreaker.

Marmac carried our various engineering upgrades, electrical and mechanical works over a 7 year period.