The ship was refitted at Chatham Dockyard and served out the war as a training vessel.

BBC: WWII landings ship to be restored

In the first, a North Korean submarine engaged in an act of war when it covertly torpedoed a South Korean naval vessel on March 21, resulting in the latter's sinking with the loss of 46 lives.

CENTERFORSECURITYPOLICY: No worse friend, no better enemy

He said there was speculation that the vessel could be a mini or midget submarine from the war.

BBC: Experts to examine River Foyle, Derry, wreck

But before her most recent reincarnation as a divers' paradise, the historic vessel cruised the waves as a U.S. transport ship during World War II.

CNN: March 7, 2013 -- Updated 1201 GMT (2001 HKT)