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Ro-59, originally named Submarine No. 57, was an Imperial Japanese Navy Type L submarine of the L3 subclass. She was in commission from 1923 to 1938, in 1939, and from 1941 to 1945. During World War II, she served on training duties in Japan.
| History | |
|---|---|
 Japan | |
| Name | Submarine No. 57 |
| Builder | Mitsubishi, Kobe, Japan |
| Laid down | 18 May 1921 |
| Launched | 28 June 1922 |
| Completed | 20 March 1923 |
| Commissioned | 20 March 1923 |
| Renamed | Ro-59 on 1 November 1924 |
| Decommissioned | 1 November 1938 |
| Recommissioned | 1 June 1939 |
| Decommissioned | 15 November 1939 |
| Recommissioned | 1 November 1941 |
| Decommissioned | 1 May 1945 |
| Stricken | 1 May 1945 |
| Fate |
|
| General characteristics | |
| Class and type | Japanese Type L submarine (L3 subclass) |
| Displacement |
|
| Length | 72.89 m (239 ft 2 in) overall |
| Beam | 7.16 m (23 ft 6 in) |
| Draft | 3.96 m (13 ft 0 in) |
| Installed power |
|
| Propulsion |
|
| Speed |
|
| Range |
|
| Test depth | 60 m (197 ft) |
| Crew | 46 |
| Armament |
|
The submarines of the Type L3 sub-class were copies of the Group 2 subclass of the British L-class submarine built under license in Japan. They carried heavier torpedoes than the preceding submarines of the L1 and L2 subclasses. They displaced 903 tonnes (889 long tons) surfaced and 1,120 tonnes (1,102.7 long tons) submerged. The submarines were 72.89 meters (239 ft 2 in) long and had a beam of 7.16 meters (23 ft 6 in) and a draft of 3.96 meters (13 ft 0 in). They had a diving depth of 60 meters (197 ft).
For surface running, the submarines were powered by two 1,200-brake-horsepower (895 kW) Vickers diesel engines, each driving one propeller shaft. When submerged, each propeller was driven by an 800-shaft-horsepower (597 kW) electric motor. They could reach 17.1 knots (31.7 km/h; 19.7 mph) on the surface and 9.1 knots (16.9 km/h; 10.5 mph) underwater. On the surface, they had a range of 5,500 nautical miles (10,200 km; 6,300 mi) at 10 knots (19 km/h; 12 mph); submerged, they had a range of 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph).
The submarines were armed with four internal 533 mm (21 in) torpedo tubes, all in the bow, and carried a total of eight 6th Year Type torpedoes. They were also armed with a single 76.2 mm (3 in) deck gun and a 6.5 mm machine gun.
Ro-59 was laid down as Submarine No. 57 on 18 May 1921 by Mitsubishi at Kobe, Japan.[1] Launched on 28 June 1922,[1] she was completed and commissioned on 20 March 1923,[1] the last unit of the Type L3 subclass.
Pre-World War II
Upon commissioning, Submarine No. 57 was assigned to Submarine Division 6 — in which she spent her entire active career — in Submarine Squadron 1 in the 1st Fleet.[1] She was renamed Ro-59 on 1 November 1924.[1] On 1 March 1926, Ro-59 and the submarines Ro-57, Ro-58, Ro-60, Ro-61, Ro-62, Ro-63, Ro-64, and Ro-68 departed Sasebo, Japan, bound for Okinawa, which they reached the same day.[1][2][3][4][5][6][7][8][9] The nine submarines got underway from Okinawa on 30 March 1926 for a training cruise in Chinese waters off Shanghai and Amoy which concluded with their arrival at Mako in the Pescadores Islands off Formosa on 5 April 1926.[1][2][3][4][5][6][7][8][9] They departed Mako on 20 April 1926 for the return leg of their training cruise, operating off China near Chusan Island, then returned to Sasebo on 26 April 1926.[1][2][3][4][5][6][7][8][9]
Submarine Division 6 was reassigned to Submarine Squadron 2 in the 2nd Fleet on 1 August 1926[1] and then on 1 December 1926 directly to the Yokosuka Naval District, in which it remained until 1941.[1] In the years that followed, Ro-59 was assigned to the Yokosuka Defense Division from 1 December 1927 to 30 November 1929 and from 1 December 1930 to 11 December 1933, the Yokosuka Guard Squadron from 1 December 1933 to 22 April 1934, then to the Yokosuka Defense Division again from 22 April to 15 June 1934, followed by another stint in the Yokosuka Guard Squadron from 15 June to 15 November 1934.[1] On 1 November 1938, she was decommissioned and placed in Second Reserve in the Yokosuka Naval District,[1] then in Third Reserve on 15 December 1938.[1]
Ro-59 was recommissioned on 1 June 1939 for service in the Yokosuka Naval District, and returned to duty with Submarine Division 6 on 1 July 1939 for service in the gunnery school in the district. She completed this duty on 15 November 1939 and was decommissioned and placed in First Reserve in the Ominato Guard Division.[1] Ro-59 was recommissioned again on 1 November 1941 and was reassigned that day along with the rest of Submarine Division 6 to the Kure Naval District.[1]
World War II
The Pacific Campaign of World War II began on 7 December 1941 (8 December 1941 in East Asia) with the Japanese attack on Pearl Harbor, Hawaii. Ro-59 served on training duties in Japanese waters from 1941,[10][11] operating in the Kure Defense Force until 15 January 1943, when Submarine Division 6 was transferred back to the Yokosuka Naval District.[1]
Ro-59 was decommissioned, stricken from the Navy list, and placed in the Fourth Reserve in the Yokosuka Naval District on 15 May 1945.[1] She then served at the submarine school at Ōtake, Japan, as a stationary training hulk until 15 August 1945, when hostilities between Japan and the Allies ended.[1] She was scrapped in 1946.[1]
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