USS Torsk (SS-423) was built by the U.S. Navy at Portsmouth, New Hampshire. She was launched on September 6, 1944, and was placed in commission on December 16, 1944.
USS Torsk is a fleet-type submarine of the Tench class. The Tench class were virtual copies of the Gato and Balao classes; however, they were more strongly built than the Gato/Balao classes and had a better internal layout, which increased their displacement by about 35-40 tons. The deck of the boat is made of teakwood, and the exterior is painted black.
USS Torsk was a pre-snorkel submarine operating underwater on batteries, and powered by a diesel electric system. In 1951 USS Torsk was converted to a snorkel-equipped Guppy submarine that allowed the boat to operate her diesel engines underwater. During this conversion all the boat's exterior guns were removed and the conning tower was enclosed by a new sail casing designed to reduce underwater water resistance.
USS Torsk is in good condition, and aside from the addition of the snorkel and the exterior changes, retains much of her World War II integrity.
Role of the Submarine in World War IIP ALIGN="justify">In the conflict against Japan in World War II, the role and importance of the submarine forces of the United States cannot be overestimated. American sub marines sank more than 600,000 tons of enemy warships and more than 5,000,000 tons of merchant shipping, thus destroying much of Japan's ocean commerce. This was accomplished by a force that never numbered more than two percent of naval personnel engaged in the war. The American submarine war against Japan created a blockade that denied her the oil, iron ore, food, and other raw materials she needed to continue to fight. By 1945 this submarine war made it all but impossible for Japanese ships to sail the ocean. Without this commerce and the raw materials it supplied to her war effort, Japan found it impossible to continue the war outside of the homeland. 
USS Torsk represents U.S. Submarine forces that fought against Japan in World War II for the following reasons:
Edwin P. Hoyt, Submarine at War--The History of the American Silent Service (New York: Stein and Day, 1983), pp. 297-98.
Richard H. O'Kane, Clear the Bridge (New York: Bzantam Books, 1981), pp. 465-67.
Alden, John A. The Fleet Submarine in the U.S. Navy--A Design and Construction History. Annapolis, Maryland: Naval Institute Press, 1979.
Blair, Clay, Jr. Silent Victory--The U.S. Submarine War Against Japan. Philadelphia, Pennsylvania: J. B. Lippincott Company, 1975.
Hoyt, Edwin P. Submarine at War--The History of the American Silent Service. New York: Stein and Day, 1983.
Middleton, Drew. Submarine--The Ultimate Naval Weapon--Its Past, Present, and Future. Chicago, Illinois: Playboy Press, 1976.
O'Kane, Richard. Clear the Bridge. New York: Bantam Books, 1981.
Roscoe, Theodore. United States Submarine Operations in World War II. Annapolis, Maryland: United States Naval Institute, 1965.
(click on the above photographs for a more detailed view)