Plague Ship by Clive Cussler

For four novels, Clive Cussler has charted the exploits of the Oregon, a clandestine spy ship completely dilapidated on the outside, but on the inside packed with sophisticated weaponry and intelligence-gathering equipment. Captained by the rakish, one-legged Juan Cabrillo and manned by a crew of former military and spy personnel, it is a private enterprise, available for any government agency that can afford it - and now Cussler sends the Oregon on its most extraordinary mission yet. The crew has just completed a top-secret mission against Iran in the Persian Gulf, when they come across a cruise ship adrift in the sea. Hundreds of bodies litter its deck, and as Cabrillo tries to determine what happened, explosions rack the length of the ship.

Approved by Englishcology