I think Luke has the right Idea. A bounty is more likely to encourage an adventurer of the likes of Cousteau, Ballard or Cameron, to solve this centuries equivalent of the Bismarck or Titanic...
why carry useless ballast when you could carry something useful, put more food and water in the survival kit, trade in you dinky pistol on a automatic, or a silenced weapon, night vision, better...
What a load of emotive crap!
Mining of haiphong harbour would be a more apt description.