Around 100 jobs will be created at a Hampshire shipbuilders after it won a £400m contract to build an advanced ocean patrol vessel.
The patrol vessels will be 328ft (100m) in length
Southampton-based VT Group signed the contract with the government of Oman to supply three of the patrol vessels for the country's Royal Navy.
The ships, which will be 328ft (100m) in length, will be built at the firm's yard in Portsmouth.
The first of the vessels is expected to be handed over to Oman in 2010.
Paul Lester, VT Group's chief executive, said: "This is a major export success for the UK and maintains the long and successful relationship we have had with the Royal Navy of Oman.
"These ships will be the most advanced of their type in the world when they are completed."
Mr Lester added that the contract will supplement the company's work on the British Royal Navy's Type 45 destroyer.