No.7 class minesweeper (1938)

No.7 class minesweeper (1938)
IJN minesweeper No7 in 1942.jpg
No.7 on 23 September 1942
Class overview
Name: No.7 class minesweeper
Builders: Maizuru Naval Arsenal
Tama Shipyard
Tōkyō Ishikawajima Shipyard
Uraga Dock Company
Operators: Naval Ensign of Japan.svg Imperial Japanese Navy
Preceded by: No.13-class
Succeeded by: No.19-class
Cost: 2,230,823 JPY (in 1937)
Built: 1937 – 1939
In commission: 1938 – 1946
Planned: 6
Completed: 6
Lost: 5
Retired: 1
General characteristics
Displacement: 630 long tons (640 t) standard
Length: 72.50 m (237 ft 10 in) overall
Beam: 7.85 m (25 ft 9 in)
Draught: 2.60 m (8 ft 6 in)
Propulsion: 2 × triple expansion stages reciprocating engines
2 × Kampon mix-fired boilers
2 shafts, 3,850 shp
Speed: 20.0 knots (23.0 mph; 37.0 km/h)
Range: 2,000 nmi (3,700 km) at 14 kn (16 mph; 26 km/h)
Complement: 98
Armament: • 3 × 120 mm (4.7 in) L/45 naval guns
• 2 × 25 mm AA guns
• 36 × depth charges
• 1 × Type 94 depth charge projector
• 6 × paravanes

The No.7 class minesweeper (第七号型掃海艇, Dai Nana Gō-gata Sōkaitei?) was a class of minesweepers of the Imperial Japanese Navy (IJN), serving during the Second Sino-Japanese War and the World War II. 6 vessels were built in 1937-39 under the Maru 3 Keikaku.

Contents

Background

  • Project number I4. Improved model of the No.13-class. They were built to update timeworn No.7-class, No.9-class and No.11-class.[1] Kampon deleted minelayer facility from them, because IJN hoped they act in Yangtze River. And they added to 1 × 120 mm naval gun for engage with National Revolutionary Army. Therefore, No.7-class had the silhouette which resembled torpedo boat Chidori-class and Ōtori-class well.

Ships in class

Ship # Ship Builder Laid down Launched Completed Fate
49 Port Blair on 15 April 1944. Decommissioned on 10 June 1944.
50 Royal Navy at Singapore on 10 July 1946. Decommissioned on 10 August 1946.
51 Ambon on 1 February 1942. Decommissioned on 10 April 1942.
52 Vigan on 10 December 1941. Decommissioned on 15 March 1942.
53 Makassar on 28 March 1945. Decommissioned on 10 May 1945.
54 Flores 08°13′S 119°14′E / 8.217°S 119.233°E / -8.217; 119.233 on 6 April 1945. Decommissioned on 25 May 1945.

Footnotes

  1. ^ No.7 (ex.-Umikaze), No.8 (ex.-Yamazkaze), No.9 (ex.-Nara), No.10 (ex.-Enoki), No.11 (ex.-Nagatsuki) and No.12 (ex.-Kikuzuki)
  2. ^ Minesweeper No.7 (第七号掃海艇 Dai 7 Gō Sōkaitei?). The same shall apply hereinafter.

Bibliography