Ship of Gold in the Deep Blue Sea by Gary Kinder

True story about the search for a ship that sank somewhere off the East Coast in 1857 with 21 tons(!) of gold on board. It's about an entrepreneur/scientist who puts together the venture for this search (including inventing all sorts of new technology, private funding, building his team, etc.) and how they found the ship in 1989. Fascinating story, well written. I couldn't put it down.