Natsushima class minelayer (1933)

Class overview
Natsushima in 1933
Name:	Tsubame class minelayer
Builders:	Tōkyō Ishikawajima Zōsen Corporation Harima Zōsen Corporation Mitsubishi Heavy Industries
Operators:	Imperial Japanese Navy
Preceded by:	Tsubame-class
Succeeded by:	Sokuten-class
Subclasses:	• Natsushima-class • Sarushima-class
Built:	1931–1934
In commission:	1933–1944
Planned:	3
Completed:	3
Lost:	3
General characteristics Natsushima-class
Type:	Netlayer/Minelayer
Displacement:	475.8 long tons (483 t) standard
Length:	73.00 m (239 ft 6 in) overall
Beam:	7.50 m (24 ft 7 in)
Draught:	1.95 m (6 ft 5 in)
Propulsion:	2 × triple expansion stages reciprocating engines 2 × Kampon mix-fired boilers 2 shafts, 2,300 shp
Speed:	19.0 knots (21.9 mph; 35.2 km/h)
Range:	2,500 nmi (4,600 km) at 14 kn (16 mph; 26 km/h)
Complement:	74
Armament:	• 2 × 76.2 mm (3.00 in) L/40 AA guns • 1 × 13 mm AA guns • 36 × Type 95 depth charges • 2 × Type 81 depth charge throwers • 120 × Type 89 naval mines or 18 × depth charges or 1 × Type 14 510 m anti-submarine net
General characteristics Sarushima-class
Type:	Netlayer/Minelayer
Displacement:	566 long tons (575 t) standard
Length:	73.00 m (239 ft 6 in) overall
Beam:	7.49 m (24 ft 7 in)
Draught:	2.02 m (6 ft 8 in)
Propulsion:	2 × MAN Mk.2 Model 9 diesels, 2 shafts, 2,100 bhp
Speed:	18.0 knots (20.7 mph; 33.3 km/h)
Range:	4,639 nmi (8,591 km) at 14.4 kn (16.6 mph; 26.7 km/h)
Complement:	64
Armament:	same as Natsushima-class

The Natsushima class minelayer (夏島型敷設艇,, Natsushima-gata Fusetsutei^?) was a class of minelayers of the Imperial Japanese Navy (IJN), serving during and after 1930s through World War II. Their designed was based on the Tsubame-class, however, Natsushima-class added to naval mine ability than them.

1 Ships in class
- 1.1 Natsushima class
  - 1.1.1 Natsushima (夏島^?)
  - 1.1.2 Nasami (那沙美^?)
- 1.2 Sarushima class
  - 1.2.1 Sarushima (猿島^?)
2 Photos
3 Bibliography

Ships in class

Natsushima class

Project number H5. 3 vessels were planned under the Maru 1 Programme, however, 3rd ship Sarushima was used to diesel engine experiment ship.

Natsushima (夏島^?)

24 December 1931: Laid down at Tōkyō Ishikawajima Zōsen.
24 March 1933: Launched.
31 July 1933: Completed.
In 1934: Rebuilding by the Tomozuru Incident.
In 1938: Sortie for the Second Sino-Japanese War.
1941-1943: Sortie for the naval mine laying at Japan Mainland.
10 December 1943: Dispatched to southeast area.
22 February 1944: Sunk by USS Stanly, USS Charles Ausburne and USS Dyson off Kavieng .
30 April 1944: Decommissioned.

Nasami (那沙美^?)

19 January 1933: Laid down at Harima Zōsen.
26 March 1934: Launched.
20 September 1934: Completed.
In 1938: Sortie for the Second Sino-Japanese War.
1941-1943: Sortie for the naval mine laying at Japan Mainland and convoy escort operations at East China Sea.
31 December 1943: Dispatched to southeast area.
1 April 1944: Sunk by air raid at Rabaul.
10 April 1944: Decommissioned.

Sarushima class

Project number H5B. She was built as diesel engine experiment ship. Her results were made use of in the Sokuten-class.

Sarushima (猿島^?)

28 March 1933: Laid down at Mistubishi, Yokohama shipyard.
16 December 1933: Launched.
20 July 1934: Completed.
In 1938: Sortie for the Second Sino-Japanese War.
1941-1944: Sortie for the naval mine laying and convoy escort operations at Japan Mainland.
4 July 1944: Sunk by air raid off Otōto-jima.
10 September 1944: Decommissioned.

Photos

Bibliography

Ships of the World special issue Vol.45, Escort Vessels of the Imperial Japanese Navy, "Kaijinsha". http://www.ships-net.co.jp/. , (Japan), February 1996
The Maru Special, Japanese Naval Vessels No.47, Japanese naval mine warfare crafts, "Ushio Shobō". http://www.kojinsha.co.jp/. (Japan), January 1981

Japanese auxiliary ship classes of World War II

Colliers and Oilers	Notoro · Ondo · Sunosaki · Ashizuri · Kazahaya ^S · Hayasui ^S · Hario ^S · Muroto · Ōse (ex-Dutch tanker Genota) ^SC

Food supply ships	Mamiya ^S · Nosaki ^S · Kinesaki · Irako ^S · Kurasaki ^SC

Landing ships	No.1 · No.101 · Shinshū Maru ^S (Army) · SS (Army)

Minelayers and Cable layer	Tokiwa ^SC · Itsukushima ^S · Yaeyama ^S · Okinoshima ^S · Tsugaru ^S · Minoo ^SC · Shirataka ^S · Hatsutaka · Tsubame · Natsushima (1933) · Sokuten (1938) · Hirashima · Ajiro ^S · Kamishima · Hashima · Sokuten (1913) · Aux. No.1 · Aux. No.101 (ex-HMS Barlight) ^SC

Minesweepers	No.1 (1923) · No.5 (1928) · No.13 · No.17 · No.7 (1938) · No.19 · No.101 (ex-HMS Taitam and Waglan) ^C · Aux. No.1 · Aux. No.101 (ex-HNLMS DEFG class) · Aux. No.104 (ex-HNLMS DEFG class)

Patrol boats	No.1 ^C · No.31 ^C · No.46 ^SC · No.101 (ex-HMS Thracian) ^SC · No.102 (ex-USS Stewart) ^SC · No.103 (ex-USS Finch) ^SC · No.104 (ex-Dutch East Indies Valk and Arend) ^C · No.105 (ex-Philippine customs Arayat) ^SC · No.106 (ex-HNLMS Banckert) ^SCI · No.107 (ex-USS Genesee) ^SC · No.109 (ex-Dutch East Indies Fazant) ^SC · Aux. No.1

Repair ships	Asahi ^SC · Akashi ^S · Hayase (ex-Chinese passenger Chin Kiang)^SC · Hitonose (ex-ROCN Min Sheng)^SC

Seaplane tenders	Notoro ^SC · Kamoi ^SC · Chitose · Mizuho ^S · Nisshin ^S · Akitsushima ^S

Submarine chasers	No.1 · No.3 ^S · No.4 · No.13 · No.28 · No.60 · Aux. No.1 · Aux. No.101 (ex-HNLMS Tjerimai) ^SC · Aux. No.102 (ex-HNLMS Ardjoeno class) ^C · Aux. No.103 (ex-HNLMS B1 class) ^C · Aux. No.111 (ex-HNLMS P13 or P14) ^SC · Aux. No.112 (ex-HNLMS A class) ^C · Aux. No.117 (ex-HNLMS Bantam) ^C · Aux. No.251 · Aux. No.253 ^S

Submarine tenders	Komahashi ^SC · Jingei · Taigei ^S

Survey ships	Tsukushi ^S · Katsuriki ^SC · Hakusa (ex-China customs Fu Hsing)^SC

Target ships	Settsu ^SC · Yakaze ^SC · Hakachi ^S · Ōhama ^S

Training ships	Fuji ^SC · Shikishima ^SC · Asama ^SC · Azuma ^SC · Kasuga ^SC · Atada (ex-ROCN Yat Sen) ^SC

Others	Sōya (freighter)^SC · Kashino (turret transporter)^S · Ōtomari (icebreaker)^S · Tategami (salvage tug) · Kasashima (salvage tug) · Miura (salvage tug) · Kaiyō No.1 (oceanographic research ship) · Asuka (traffic ship, ex-ROCN Yung Chien) ^SC

^S - Single ship of class • ^C - Converted to ship type • ^I - Incomplete until the end of war

Natsushima class minelayer (1933)

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