Abstract: An underwater weapon system having a housing formed by first and second halves thereof sandwiched about a gun system that is rotatably mounted to and between the first and second halves. The gun system includes a gun and ammunition sealed within a waterproof housing with a muzzle of the gun protruding from the waterproof housing. The gun system is rotatable relative to the first and second halves of the housing while the housing can be maneuvered to rotate through a plane of rotation of the gun system as the housing moves through the water.

Abstract: A hydro-propelled ship is provided which consists of a hull having a double wall, so as to float on a top surface of a body of water. A pair of propulsion turbines are each affixed to a starboard side and a port side of the hull of the ship in a catamaran configuration below the top surface of the body of water. A mechanism is carried within the hull of the ship for generating power to operate each of the propulsion turbines to produce a water jet to propel the ship along the body of water. A pair of adjustable rudders extend downwardly into the body of water from the stern of the hull for steering the ship.