Out of curiosuty I entered "Clive Clussler" in the search and why on Earth it returned Janet Evanovich and Patricia Cornwell
Shipwrecks and mystery always ahve me thinking of "Isvik" by Hammond Innes, can't tell if it's any good tho - havent gotten to it yet; but the description is stuck in my head.
Anyhow, I'd recommend Andy McNab and Colin Forbes. Also you might want try James Rollins, but he's more desert kind of guy.