No.13 class minesweeper

No.13 in 1933
Class overview
Name:	No.13 class minesweeper
Builders:	Fujinagata Shipyards Mitsui Bussan Ōsaka Iron Works
Operators:	Imperial Japanese Navy
Preceded by:	No.1-class
Succeeded by:	No.7-class
Subclasses:	No.13-class (Project Number I3A) No.17-class (Project Number I3B)
Cost:	1,330,000 JPY (in 1931)
Built:	1931 – 1936
In commission:	1933 – 1945
Planned:	6
Completed:	6
Lost:	5
Retired:	1
General characteristics No.13-class
Displacement:	525 long tons (533 t) standard
Length:	74.00 m (242 ft 9 in) overall
Beam:	8.20 m (26 ft 11 in)
Draught:	2.07 m (6 ft 9 in)
Propulsion:	2 × triple expansion stages reciprocating engines 2 × Kampon mix-fired boilers 2 shafts, 3,200 shp
Speed:	20.0 knots (23.0 mph; 37.0 km/h)
Range:	2,600 nmi (4,800 km) at 12 kn (14 mph; 22 km/h)
Complement:	98
Armament:	• 2 × 120 mm (4.7 in) L/45 naval guns • 2 × 13 mm AA guns • 18 × depth charges • 2 × Type 81 depth charge projectors • 2 × paravanes or 40 × Mk.5 naval mines
General characteristics No.17-class
Displacement:	578 long tons (587 t) standard
Length:	72.50 m (237 ft 10 in) overall
Beam:	7.85 m (25 ft 9 in)
Draught:	2.50 m (8 ft 2 in)
Propulsion:	2 × Kampon geared turbines 2 × Kampon mix-fired boilers 2 shafts, 3,200 shp
Speed:	19.0 knots (21.9 mph; 35.2 km/h)
Range:	2,600 nmi (4,800 km) at 12 kn (14 mph; 22 km/h)
Complement:	94
Armament:	• 2 × 120 mm (4.7 in) L/45 naval guns • 2 × 13 mm AA guns • 36 × depth charges • 1 × Type 94 depth charge projector • 2 × paravanes or 40 × Mk.5 naval mines

The No.13 class minesweeper (第十三号型掃海艇,, Dai Jūsan Gō-gata Sōkaitei^?) was a class of minesweepers of the Imperial Japanese Navy (IJN), serving during 1930s and World War II. 6 vessels were built in 1931-36 under the Maru 1 Keikaku. They have two sub classes, this article handles them collectively.

Background

• Improved model of the No.1-class. The IJN tried to a small hull than No.1-class to give a performance the same as No.1-class. And it failed by the Tomozuru Incident.

Ships in classes

No.13 class

• Project number I3A. 4 vessels were built in 1931-1934. No.15 and No.16 were behind with the completed by the Tomozuru Incident. They had clipper-bow.

Ship	Builder	Laid down	Launched	Completed	Fate
Tarakan Island on 12 January 1942. Decommissioned on 30 November 1945.
Makassar 06°08′S 119°20′E / 6.133°S 119.333°E / -6.133; 119.333 on 11 September 1943. Decommissioned on 11 November 1943.

No.17 class

• Project number I3B. 2 vessels were built in 1935-1936. Improved model of the No.13-class. About their appearance, bow was changed to double-curvature bow and fitted Kampon geared turbine.

Ship	Builder	Laid down	Launched	Completed	Fate
Hainan 16°52′N 108°38′E / 16.867°N 108.633°E / 16.867; 108.633 on 26 November 1944. Decommissioned on 10 January 1945.

Photo

• 

  No.16

• 

  No.18

Footnotes

1. ^ Minesweeper No.13 (第十三号掃海艇, Dai 13 Gō Sōkaitei^?). The same shall apply hereinafter.

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.50, Japanese minesweepers and landing ships, "Ushio Shobō". http://www.kojinsha.co.jp/.  (Japan), April 1981