USS Drum (SS-228) was built by the U.S Navy Yard at Portsmouth, New Hampshire. She was launched on May 12, 1941, and was commissioned on November 1, 1941.
USS Drum is a fleet-type submarine (built to maintain speeds averaging 17 knots) of the Gato class. The deck is teakwood, and the submarine's exterior is painted black and haze grey. USS Drum is a pre-snorkle submarine, operating underwater on batteries, and powered by a diesel electric system.
USS Drum is now moored with the Battleship USS Alabama at Battleship Alabama Memorial park in Mobile, Alabama. USS Drum is in excellent condition and retains her World War II integrity.
Role of the Submarine in World War II
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 impossible for any Japanese ship 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 Drum represents the U.S. submarine forces that fought against Japan in World War II for the following reasons:
Edwin P. Hoyt, Submarines 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: Bantam Books, 1981), pp. 465-67.
Alden, John A. The Fleet Submarine in the US Navy--A Design and Construction History. Annapolis, Maryland: Naval Institute Press, 1979.
Blair, Clay, Jr. Silent Victory--The US 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)