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No.1-class auxiliary minelayer
Japanese minelayer No1
Auxiliary Minelayer No.1 on 28 February 1942
Class overview
Name: No.1 class auxiliary minelayer
Builders: Uraga Dock Company
Operators: Naval Ensign of Japan Imperial Japanese Navy
Preceded by: Sokuten-class
Built: 1941–1942
In commission: 1942–1947
Planned: 4
Completed: 4
Lost: 3
Retired: 1
General characteristics
Type: Minelayer
Displacement: 215 long tons (218 t) standard
Length: 35.11 m (115 ft 2 in) overall
Beam: 6.16 m (20 ft 3 in)
Draught: 2.38 m (7 ft 10 in)
Propulsion: 1 × low-speed diesel
single shaft, 400 bhp
Speed: 9.5 knots (10.9 mph; 17.6 km/h)
Range: 1,500 nmi (2,800 km) at 9.5 kn (10.9 mph; 17.6 km/h)
Complement: 63
Armament: • 1 × 76.2 mm (3.00 in) L/40 AA gun
• 2 × 13 mm AA guns
• 40 × Type 93 naval mines or 16 × depth charges

The No.1 class auxiliary minelayer (第一号型敷設特務艇, Dai Ichi Gō-gata Fusetsu-Tokumutei?) was a class of minelayers of the Imperial Japanese Navy (IJN), serving during World War II. They were built to supplement the timeworn Sokuten-class. 4 vessels were built in 1941–42 under the Maru Rin Programme (Ship # 257–260).

BackgroundEdit

  • In 1939, the Sokuten-class was the main minelayer of the local guard districts. However, they were too old. The IJN wanted new small minelayers for local guard districts.
  • In 1940, the IJN found out a handy boat. It was a standard longline fishing ship Sōyō Maru (160 tons) by the Ministry of Agriculture, Forestry. The IJN made a model of it and completed a design of new small minelayer. Uraga Dock Company built all of the vessels.

Ships in classEdit

Ship # Ship Laid down Launched Completed Fate
257 Auxiliary minelayer No. 1[1]
ex-Minelayer No. 1
4 June 1941 20 August 1941 28 February 1942
as Minelayer No. 1
Renamed Auxiliary minelayer No. 1 on 1 February 1944, struck a naval mine and sunk off Medan on 27 March 1945, decommissioned on 3 May 1947.
258 Minelayer No. 2[2] 4 June 1941 30 August 1941 10 April 1942 Struck a naval mine and sunk off Surabaya on 31 December 1942, decommissioned on 20 March 1943.
259 Auxiliary minelayer No. 3[3]
ex-Minelayer No. 3
8 September 1941 14 January 1942 30 June 1942
as Minelayer No. 3
Renamed Auxiliary minelayer No. 3 on 1 February 1944, survived war at Chuuk, decommissioned on 3 May 1947.
260 Auxiliary minelayer No. 4[4]
ex-Minelayer No. 4
8 September 1941 24 January 1942 20 August 1942
as Minelayer No. 4
Renamed Auxiliary minelayer No. 4 on 1 February 1944, sunk by HMS Tally-Ho off Car Nicobar on 20 November 1944, decommissioned on 3 May 1947.

PhotosEdit

NotesEdit

  1. 第一号敷設特務艇 (Dai Ichi Gō Fusetsu-Tokumutei)
  2. 第二号敷設艇 (Dai Ni Gō Fusetsutei), she sank before the revision of the law.
  3. 第三号敷設特務艇 (Dai San Gō Fusetsu-Tokumutei)
  4. 第四号敷設特務艇 (Dai Yon Gō Fusetsu-Tokumutei)

BibliographyEdit


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