salvor

noun

1. One who salvages; especially, one who voluntarily assists in saving a distressed ship or its goods at sea.

   “A salvor is a risktaker. […] The shores of Europe were littered with wrecks from the First World War. Sorima [la Società Ricuperi Marittimi] collected "no cure, no pay" (the equivalent of "no win, no fee") contracts from governments and insurers, seeking to recoup their losses.”