Battle Stations: They were silent warriors in a blood red sea... (Depth Force Submarine Thrillers)

Project Discovery: Armageddon threatens in a deadly underwater battle... (Depth Force Submarine Thrillers)

Warmonger: A battle in icy seas could change the world forever... (Depth...

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

Harbor of Doom: High tech submarines turn the Pacific blood red... (Depth...