Special Boat Squadron's Stealth Boat and its mothership!.

The 29-strong fleet also includes SD Victoria, the “Worldwide Support Vessel” which is the largest of the 29 new vessels ordered by Serco Marine Services from Damen. via UKArmedForcesCommentary Blog.

Built in Romania, the 83m training and support vessel replaced SD Newton as a platform for Special Forces operations, for which she is equipped with classrooms, briefing and operations rooms, workshops, extensive storage areas of various kinds, a helicopter winching deck, and provision to carry and operate Rigid Inflatable Boats. She has accommodation for 88, can do 15 knots and has 46 days endurance. The side-launching davit can deploy an 8 tons boat in Sea State 4 and the main deck crane is 25 tons rated and has an (harbor) reach of 17 meters, which goes down to 12 in operations at sea in SS4. The exact activity of the vessel is not known, but she’s most likely a cherished part of the Special Boat Service toolkit, as in this other photo she is carrying their ‘StealthBoat’, a 2007-procured vessel reportedly capable of 60 knots.  

I was surfing the web looking for info on the Falklands Campaign to get a little info to refute a guest blogger on Think Defence when I ran across this info.

Seems like the SBS has been some busy boys!

A StealthBoat (to my knowledge it still hasn't received an official, publicly released designation) and a Worldwide Support Vessel.

Sounds to me like the Royal Navy and Royal Marines SBS have teamed up and found themselves a mothership and high speed infiltrator/interceptor.

I like.