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The Lake Ontario National Marine Sanctuary is a United States National Marine Sanctuary on Lake Ontario off the coast of the U.S. state of New York.It protects 41 known historically significant shipwrecks spanning 200 years of American maritime history, as well as 19 potential shipwreck sites.
Hilma Hooker – Shipwreck in Bonaire in the Caribbean Netherlands; SS Hispania – Swedish steamship wrecked in the Sound of Mull, now a dive site; HMS Hood – Royal Sovereign-class battleship of the Royal Navy scuttled in Portland Harbour; SS James Eagan Layne – Liberty ship sunk off Cornwall, now a dive site
Professional divers, when diving on a shipwreck, generally refer to the specific task, such as salvage work, accident investigation or archaeological survey. Although most wreck dive sites are at shipwrecks, there is an increasing trend to scuttle retired ships to create artificial reef sites.
Only 141 of the USS Johnston's 327 crew survived when the ship was sunk on October 25, 1944, according to the Navy.
Explosives detonating to sink the former HMNZS Wellington in 2005. Sinking ships for wreck diving sites is the practice of scuttling old ships to produce artificial reefs suitable for wreck diving, to benefit from commercial revenues from recreational diving of the shipwreck, or to produce a diver training site.
US Navy diver dredging an excavation site during an underwater recovery operation, searching for personnel who went missing during WWII off the coast of Koror. Salvage diving is the diving work associated with the recovery of all or part of ships, their cargoes, aircraft, and other vehicles and structures which have sunk or fallen into water.
Sir Ernest Shackleton’s lost ship will be one of the most “easily accessible shipwrecks” despite remaining under the sea, the team preserving the site has said.
The recommended depth limit for more extensively trained recreational divers ranges from 30 metres (98 ft) for PADI divers, [19] (this is the depth at which nitrogen narcosis symptoms generally begin to be noticeable in adults), to 40 metres (130 ft) specified by Recreational Scuba Training Council, [19] 50 metres (160 ft) for divers of the ...