HMS Clyde will accommodate a crew of 36

HMS Clyde is the first vessel to emerge from the Hampshire naval base since 1967, when Leander-class frigate HMS Andromeda was completed.

The 80-metre (262ft) offshore patrol vessel will be chartered to the MoD and deployed in the Falklands next Spring.

VT Shipbuilding, the company which made the ship, said the ceremony on Thursday was "a special moment".

'Absolutely outstanding'

Francis Paonessa, of VT, said: "HMS Clyde is a fitting ship to mark the return of shipbuilding to the base and underlines Portsmouth's important role in today's Royal Navy."

HMS Clyde has a helicopter deck and has been designed to endure a wide range of sea conditions.

Lt Cdr Simon Hopper, HMS Clyde's commanding officer, said: "She's absolutely outstanding. She is an impressive ship with modern capabilities.

"The current Castle-class ships have an air surveillance capability but HMS Clyde has a state-of-the-art air surveillance radar and more extensive armaments.

"The ship's capability will allow her to contribute fully to the work of the RAF and Army when she is on station."

The ship and its crew will undergo several months of training around UK waters before deployment next Spring.