War at Sea(Kobo/電子書)

Nuclear Dawn(Kobo/電子書)

The Lost Submarines of Pearl Harbor(Kobo/電子書)

The Curse of the Somers(Kobo/電子書)

Clotilda(Kobo/電子書)

Silent Killers(Kobo/電子書)

Misadventures of a Civil War Submarine(Kobo/電子書)

Operation Rising Sun(Kobo/電子書)