The Submarine Force Museum Virtual Tour

Front Walk

Located along the front walk of the museum are 4 midget submarines.

The Japanese "Type A"The Japanese "Type A"

During World War II, the Japanese "Type A" two-man mini-sub was carried "piggy back" by a mother ship, usually another submarine, to its area of operation. Type A submarines were used during the attack on Pearl Harbor, Hawaii and throughout the war, but were generally unsuccessful.

The SS X-1The SS X-1

The SS X-1 was a non-commissioned experimental submarine designed to both defend and penetrate shallow waters and enemy harbors where large conventional submarines can not operate.  A unique engineering feature was the closed- loop hydrogen peroxide system that allowed the use of the diesel engine under the water independent from an external air source.  This system provided long term underwater operations in much the same manner as a nuclear powered submarine.  With the adoption of nuclear power in the USS Nautilus, the US Navy abandoned this method of underwater propulsion, though it has been carried on by other navies.

Swimmer Delivery Vehicle (SDV)Swimmer Delivery Vehicle (SDV)

Swimmer Delivery Vehicle (SDV):  Submarines have operated with special operations teams since the days of WWII with Underwater Demolition Teams (UDT), commonly known as "SEALs" (Sea-Air-Land) are used in a variety of clandestine operations.  Carried in a special watertight tank "piggybacked" to a submarine, the SDV gives the SEAL team a greater range of stealth, mobility and endurance.