A retired warship destined to become the first artificial diving reef of its kind in Europe is being prepared for her new role on the seabed off Cornwall.
HMS Scylla is due to be scuttled off Cornwall in April 2004
The National Marine Aquarium in Plymouth bought the decommissioned 2,500-tonne vessel from the Ministry of Defence earlier this year.
She is due to be scuttled off Whitsand Bay in April to create a haven for divers.
As part of the £1m project, the Leander-class frigate is undergoing preparatory work at Plymouth's Devonport Dockyard.
Experts from Canada have been brought in to advise contractors how to make the ship safe for divers and the underwater environment.
A Leander Class Frigate with a general and anti-submarine role
Built in the late 1960s
113 metres in length
The ship was recommended for disposal in 1991
She was decommissioned in December 1993
Similar vessels have been placed on the seabed in Canada, Australia and New Zealand
Jay Straith, President of the Canadian Artificial Reef Consultancy, said the ship's tanks would be scrubbed out, her doors and hatches taken out and any materials containing harmful substances removed.
Mr Straith said: "You can never make a ship 100% safe.
"But a number of exit points will be installed at different areas so divers can leave the vessel quickly."
The Scylla will be sunk using a controlled explosion to create around 12 holes in her hull.