Deep Six / Blue Gold / Flood Tide / Shock Wave / Serpent / Raise the Titanic / The Sea Hunters / Pacific Vortex)

#7 in Dirk Pitt

Dirk Pitt is a 25-book series with 25 primary works first released in 1972 with contributions by Clive Cussler, Michael Pritchard, and Dirk Cussler.