Clive Cussler’s Deep Six is the 7th installment in the Dirk Pitt series.
This novel had a publication date of May 28, 1984.
Deep Six book description
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!