I can't help with this one. I know nothing about these ships, except to say that they found 'PT-109' in May last year.

A certain Dr Robert Ballard was involved in finding it after nealy 60 years on the bottom, having been sunk in August 1943

http://www.npr.org/programs/re/archivesdate/2002/jul/

__________________
"It is dangerous to be right when the government is wrong." --Voltaire

"Let justice be done though heaven should fall." - - Lucius Calpurnius