Japanese submarine Yu 1003
 An unidentified Yu I-type submarine of the Yu 1001 subclass in Tateyama Bay on the coast of Japan in 1945.
| |
| History | |
|---|---|
 Japan | |
| Name | Yu 1003 |
| Builder | Japan Steel Works, Hiroshima, Japan |
| Fate |
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| General characteristics Yu I type | |
| Type | Transport submarine |
| Displacement |
|
| Length | 41.40 m (135 ft 10 in) overall |
| Beam | 3.90 m (12 ft 10 in) |
| Draft | 3.00 m (9 ft 10 in) |
| Propulsion |
|
| Speed |
|
| Range |
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| Test depth | 100 m (328 ft) |
| Capacity | 24 tons freight or 40 troops |
| Complement | 23 |
| Armament |
|
Yu 1003 was an Imperial Japanese Army transport submarine of the Yu 1001 subclass of the Yu I type. Constructed for use during the latter stages of World War II, she served in the waters of the Japanese archipelago.
Construction
[edit]In the final two years of World War II, the Imperial Japanese Army constructed transport submarines — officially the Type 3 submergence transport vehicle and known to the Japanese Army as the Maru Yu — with which to supply its isolated island garrisons in the Pacific. Only submarines of the Yu I type were completed and saw service. The Yu I type was produced in four subclasses, each produced by a different manufacturer and differing primarily in the design of their conning towers and details of their gun armament, although one source[1] states that the Yu 1001 subclass differed from the original Yu 1 sublcass in other ways, being longer, having a slightly larger displacement and more powerful diesel engine that increased the maximum speed by 2 knots (3.7 km/h; 2.3 mph), and probably having no deck gun installed. None of the Yu I-type submarines carried torpedoes or had torpedo tubes. Yu 1003 a unit of the Yu 1001 subclass.[2]
Japan Steel Works (Nihon Seikojo) constructed Yu 1003 at its plant in Hiroshima, Japan.[2][3] Records of the details of the construction of Yu 1003 have not been discovered, but the earliest Yu I-type submarines of the original Yu 1 subclass were laid down and launched during the latter half of 1943 and entered service at the end of 1943 or early in 1944.[3][4]
Service history
[edit]Yu 1003 spent her operational career in Japanese home waters.[1] In January 1945, several Type I transport submarines were sent to operate from Shimoda on the southern tip of the Izu Peninsula in Shizuoka Prefecture on Honshu,[1] and the submarines began transport missions from Shimoda in March 1945.[1] Assigned to Detachment 2, Transport Submarine Group, on 11 February 1945,[1] Yu 1003 made a round-trip supply voyage from Shimoda to Hachijō-jima in the Philippine Sea sometime during 1945.[1][3]
World War II ended with the cessation of hostilities on 15 August 1945. Yu 1003 surrendered to the Allies later in August 1945.[3] She subsequently either was scuttled or scrapped.[1]
References
[edit]Footnotes
[edit]Bibliography
[edit]- Bagnasco, Erminio (1977). Submarines of World War Two. Annapolis, Maryland: Naval Institute Press. ISBN 0-87021-962-6.
- Bailey, Mark L. (1998). "Imperial Japanese Army Transport Submarines: Details of the YU-2 Class Submarine YU-3". Warship International. XXXV (1): 55–63.
- Carpenter, Dorr B. & Polmar, Norman (1986). Submarines of the Imperial Japanese Navy 1904–1945. London: Conway Maritime Press. ISBN 0-85177-396-6.
- Chesneau, Roger, ed. (1980). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. ISBN 0-85177-146-7.
- Mühlthaler, Erich (1998). "Re:Imperial Japanese Army Transport Submarines". Warship International. XXXV (4): 329–330. ISSN 0043-0374.
- Rekishi Gunzō, History of Pacific War Extra, Perfect guide, The submarines of the Imperial Japanese Forces, Gakken, Tokyo Japan, 2005, ISBN 4-05-603890-2.
- Rekishi Gunzō, History of Pacific War Vol.45, Truth histories of the Imperial Japanese Naval Vessels, Gakken, Tokyo Japan, 2004, ISBN 4-05-603412-5.
- Ships of the World No.506, Kaijinsha, Tokyo Japan, 1996.
- The Maru Special, Japanese Naval Vessels No.43 Japanese Submarines III, Ushio Shobō, Tokyo Japan, 1980.
- Atsumi Nakashima, Army Submarine Fleet, "The secret project !, The men challenged the deep sea", Shinjinbutsu Ōraisha, Tokyo Japan, 2006, ISBN 4-404-03413-X.
- 50 year history of the Japan Steel Works (first volume and second volume), Japan Steel Works, 1968.