Harbor of Doom: High tech submarines turn the Pacific blood red... (Depth Force Submarine Thrillers)

Battle Stations: They were silent warriors in a blood red sea... (Depth...

Depth Force: A dramatic Cold War military adventure (Depth Force Submarine Thrillers)

Torpedo Tomb: Victory or death beneath the seas... (Depth Force Submarine Thrillers)

Deep Kill: A secret war beneath the seas... (Depth Force Submarine Thrillers)