Date | Additions | Losses | Net change | End of period total | Index |
12 July 1941 | 6,384,000 | 100 | |||
12/1941 | 44,200 | 51,600 | −7,400 | 6,376,600 | 99 |
1942 | 661,800 | 1,095,800 | −434,000 | 5,942,600 | 93 |
1943 | 1,067,100 | 2,065,700 | −998,600 | 4,494,400 | 77 |
1944 | 1,735,100 | 4,115,100 | −2,380,000 | 2,564,000 | 40 |
1/45 – 8/45 | 465,000 | 1,562,100 | −1,097,100 | 1,466,900 | 23 |
In World War II, the United States Navy used submarines heavily. Overall, 263 US submarines undertook war patrols, [2] claiming 1,392 ships and 5,583,400 tons during the war. [3] [lower-alpha 1] Submarines in the United States Navy were responsible for sinking 540,192 tons or 30% of the Japanese navy and 4,779,902 tons of shipping, or 54.6% of all Japanese shipping in the Pacific Theater. Submarines were responsible for laying 18,553 mines. [4] [5] At the beginning of the war, Japanese merchant ships had a carrying capacity of around six million tons. By the end of the war, in August 1945, the capacity was two million, with only 320,000 in condition to carry cargo. [6]
Submarine warfare began on 7 December 1941, when the Chief of Naval Operations ordered the navy to "execute unrestricted air and submarine warfare against Japan." [6] It appears the policy was executed without the knowledge or prior consent of the government. [5] The London Naval Treaty, to which the U.S. was signatory, [5] required submarines to abide by prize rules (commonly known as "cruiser rules"). It did not prohibit arming merchantmen, [5] but arming them, or having them report contact with submarines (or raiders), made them de facto naval auxiliaries and removed the protection of the cruiser rules. [7] [8] This made restrictions on submarines effectively moot. [5] U.S. Navy submarines also conducted reconnaissance patrols, landed special forces and guerrilla troops and performed search and rescue tasks. [9] The submarines were so successful that by early 1944, they struggled to find targets. [10] The war against shipping was the single most decisive factor in the collapse of the Japanese economy, and the Cabinet of Japan reported to the National Diet after the war that “the greatest cause of defeat was the loss of shipping.” [6] [11]
Starting in 1941, submarines patrolled the American Theater, hunting German U-boats and protecting shipping lanes. Submarine Squadron 50, formed in 1942, served in the European Theater. The squadron was present in several invasions, and hunted blockade runners, first off of Spain and later Norway. The ships scored several hits, but a lack of targets led to them being returned to the United States. [10]
With 116,454 tons sunk, the USS Tang sank the most tonnage of shipping in World War II for the United States. Its tonnage was revised from the Joint Army–Navy Assessment Committee (JANAC) report, which initially credited Tang with fewer sinkings. (93,824 tons and 24 ships) In 1980, the relevant JANAC section was officially replaced and updated. [12] The Tang sank more than 16,000 tons over the second highest submarine, the USS Flasher (100,231). All 23 other submarines sank between 99,901 (USS Rasher) and 59,800 (USS Archerfish) tons. Fourteen of the submarines were Gato-class, six were Balao-class, four were Tambor-class and one was Sargo-class.
With 33 ships sunk, the USS Tang sank the most ships in World War II for the United States. Its number of ships sunk was revised from the Joint Army–Navy Assessment Committee (JANAC) report, which initially credited Tang with fewer sinkings (24 ships). In 1980, the relevant JANAC section was officially replaced and updated. [12] The Tautog sank the second most, with 26. The other submarines sank from 23 (Silversides) to 14 (Kingfish) ships. Seventeen ships were Gato-class, four were Balao-class and three were Tambor-class.
USS Seawolf (SS-197), a Sargo-class submarine, was the second submarine of the United States Navy named for the seawolf.
USS Tang (SS-306) was a Balao-class submarine of World War II, the first ship of the United States Navy to bear the name Tang. She was built and launched in 1943, serving until being sunk by her own torpedo off China in the Taiwan Strait on 24 October 1944.
Richard Hetherington O'Kane was a United States Navy submarine commander in World War II, who was awarded the Medal of Honor for commanding USS Tang in the Pacific War against Japan to the most successful record of any United States submarine ever. He also received three Navy Crosses and three Silver Stars, for a total of seven awards of the United States military's three highest decorations for valor in combat. Before commanding Tang, O'Kane served in the highly successful USS Wahoo as executive officer and approach officer under noted Commander Dudley "Mush" Morton. In his ten combat patrols, five in Wahoo and five commanding Tang, O'Kane participated in more successful attacks on Japanese shipping than any other submarine officer during the war.
USS Flier (SS-250) was a Gato-class submarine, was the only ship of the United States Navy to be named for the flier.
USS Gar (SS-206) was the first of the Gar subclass of the Tambor-class submarines to be commissioned for the United States Navy just prior to the country's 7 December 1941 entry into World War II. These submarines were a slightly improved version of preceding submarines of the Tambor class. While Gar survived the war, all of her sister ships — USS Grampus (SS-207), 'USS Grayback (SS-208), USS Grayling (SS-209), USS Grenadier (SS-210), and USS Gudgeon (SS-211) — were lost. She is the only ship of the United States Navy to be named for the gar, a fish of the family Lepisosteidae.
USS Silversides (SS/AGSS-236) is a Gato-class submarine, the first ship of the United States Navy to be named for the silversides.
George Levick Street III was a submariner in the United States Navy. He received the Medal of Honor during World War II.
USS Bluefish (SS-222), a Gato-class submarine, was the first ship of the United States Navy to be named for the bluefish. Between 9 September 1943 and 29 July 1945 she completed nine war patrols. Her operating area extended from the Netherlands East Indies to the waters south of Honshū. According to the notoriously unreliable JANAC accounting, Bluefish sank 12 Japanese ships totaling 50,839 tons.
The first USS Sunfish (SS-281), a Gato-class submarine, was the first ship of the United States Navy to be named for the ocean sunfish, Mola mola, a plectognath marine fish, having a deep body truncated behind, and high dorsal and anal fins.
USS Cabrilla (SS/AGSS-288), a Balao-class submarine, was a ship of the United States Navy named for the cabrilla, an edible fish inhabiting the Mediterranean Sea and waters off the coast of California.
Dudley Walker Morton, nicknamed "Mushmouth" or "Mush", was a submarine commander of the United States Navy during World War II. He was commander of the USS Wahoo (SS-238) during its third through seventh patrols. Wahoo was one of the most-celebrated submarines of World War II, as it sank at least 19 Japanese ships, more than any other submarine of the time. Morton and Wahoo disappeared in 1943 during a transit of La Pérouse Strait. He was legally declared deceased three years later.
Rear Admiral Roy Milton Davenport was an American officer in the United States Navy. He is the first sailor to be awarded five Navy Crosses, the United States military's second highest decoration for valor. Davenport was awarded these military decorations while serving as a submarine commander in the Pacific during World War II.
Slade Deville Cutter was a career U.S. naval officer who was awarded four Navy Crosses and tied for second place for Japanese ships sunk in World War II. He graduated from the United States Naval Academy as an All-American American football player.
United States Submarine Operations in World War II by Theodore Roscoe is a classic history of the role of the United States Navy submarines in World War II, earning him the title of "grandfather" of World War II American Submarine historiography. Because the book was written shortly after the war, later scholars have found errors or omissions in its facts. Nevertheless, the book's sweeping narrative maintains it as a classic text in the American submarine force; excerpts are often read at ceremonies where submariners earn their Submarine Warfare insignia.
Joint Army–Navy Assessment Committee (JANAC) was a United States inter-service agency set up to analyze and assess Japanese naval and merchant marine shipping losses caused by U.S. and Allied forces during World War II.
The Japanese submarine I-31 was one of 20 Type B cruiser submarines of the B1 sub-class built for the Imperial Japanese Navy (IJN) during the 1940s.
Maurice Herbert Rindskopf (1917–2011) was the youngest officer to ascend to command of a Fleet Submarine in World War II; and until his death, was the last living World War II submarine commander. His entire World War II submarine career was spent on board USS Drum (SS-228), where he was awarded a Silver Star as a lieutenant in charge of torpedoes and gunnery, and the Navy Cross as its commanding officer. He culminated his career as a Rear Admiral and the Director of Naval Intelligence.
Charles Elliott Loughlin was an officer of the United States Navy, where he reached the rank of Rear Admiral. He is best known for his court-martial following the controversial sinking of the Japanese hospital ship Awa Maru. He was the commanding officer of the USS Queenfish (SS-393) during four war patrols. Loughlin earned two Navy Crosses, two Legions of Merit and one Silver Star during his time in the United States Navy.
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