Deep Six (Dirk Pitt #7) by Clive Cussler

A deadly tide of poison flows into ocean waters. A ghost ship drifts across the empty northern Pacific. A luxury Soviet liner blazes into a funeral pyre. The Presidential yacht cruises the Potomac night—and the President disappears without a trace.

Dirk Pitt takes on a sinister Asian shipping empire in an intercontinental duel of nerves. In his most dangerous, fast-paced adventure, he fights to save the US government—and to seize one desperate moment of revenge!