In A Ship Possessed, By Alton Gansky, retired Navy captain, J.D. Stanton, investigates a mysterious submarine. Initially, the Triggerfish is a WW2 submarine that went missing in the Atlantic. When the sub randomly shows up on a beach in San Diego, it has everyone confused. A diver examines it back at the dock but the propellers turn on by themselves and kill him. On top of this, terrorists block off the bridge and threaten to blow it up unless they get access to the sub. When two terrorists enter the sub a possession takes over. Finally, while the terrorists are incapacitated Stanton is able to take them
