RFA Sea Crusader was a fast sealift ship chartered to Britain's Royal Fleet Auxiliary between 1996 and 2003 and subsequently in commercial service with Cobelfret on North Sea routes as MV Celestine.

In the mid-1990s the British Ministry of Defence identified a need for sealift ships to support the new Joint Rapid Deployment Force (JRDF, subsequently the Joint Rapid Reaction Force).

She can carry 654 cars and 157 trailers Kawasaki Heavy Industries built MV Celestine at Sakaide shipyard, Japan in 1996.

[2] As of 2014[update] she is serving the Purfleet and Immingham routes to Zeebrugge for Cobelfret Ferries under a Belgian flag, homeported in Antwerp.

This article about a specific naval auxiliary ship or boat of the United Kingdom is a stub.