Corsair - Clive Cussler

Corsairs are pirates, and pirates come in many varieties. There are the pirates who fought in the sea off the Barbary Coast in the late eighteenth and early nineteenth centuries, the contemporary pirates who infest the waters of Africa and Asia, and the pirates . . . who look like something else.
When the U.S. secretary of state's plane crashes while bringing her to a summit meeting in Libya, the CIA, distrusting the Libyans, hire Cabrillo to search for her, and the misgivings prove well founded. The crew locates the plane–but the secretary of state has vanished. A terrorist mastermind has other plans for the conference, plans that Cabrillo cannot let happen. But what does it all have to do with a two-hundred-year-old naval battle, and the centuries-old Islamic scrolls that the Libyans seem so determined to find? The answers will lead Cabrillo full circle into history, and into another pitched battle on the sea, this time against Islamic extremists, and with the fate of nations resting on its outcome.