HMS Alliance prior to the restoration work
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Royal Navy submarine HMS Alliance restoration under way

23 April 2013 Last updated at 11:19 BST

The restoration of a World War II submarine is expected to be completed next year.

HMS Alliance, based at the Royal Navy Submarine Museum in Gosport, Hampshire, is undergoing a £6.75m revamp.

The project, which was awarded £3.4m by the Heritage Lottery Fund, still has a shortfall of £200,000 and efforts continue to raise the cash.

Work on the 1940s submarine, which will be a memorial to 5,300 British submariners who gave their lives in service between 1904 and the present day, started in October 2011 and expected to finish in April 2014.

BBC South Today's Steve Humphrey reports.