Ikazuchi-class destroyer escort

Class overview
Name:	Ikazuchi class
Operators:	Coastal Safety Force  Japan Maritime Self-Defense Force
Preceded by:	JDS Akebono (DE-201)
Succeeded by:	Isuzu-class destroyer escort
In commission:	1956–1977
Completed:	2
Retired:	2
General characteristics
Type:	Destroyer escort
Displacement:	1,080 long tons (1,097 t) standard
Length:	87.5 m
Beam:	8.7 m
Draught:	3.01 m
Propulsion:	2 × diesel engines, 2 shafts
Speed:	25 knots
Complement:	160
Sensors and processing systems:	OPS-2 air-search radar, OPS-3 surface-search radar, QHBa search sonar, QDA attack sonar
Armament:	2 × 3"/50 caliber Mk.21 guns (Type 54) 4 × Bofors 40 mm anti-aircraft guns 1 × Hedgehog anti-submarine mortar 8 × K-gun depth charge throwers 1 × Depth charge rack

The Ikazuchi class destroyer escort (いかづち型護衛艦 Ikazuchigata goeikan) was a destroyer escort (or frigate) class built for the Coastal Safety Force (later Japan Maritime Self-Defense Force, JMSDF) in the late 1950s.

In the FY1953, the Japanese government ordered three destroyer escorts, JDS Akebono (DE-201) and this class. These vessels were the first indigenous post-World War II Japanese destroyer escorts, but their propulsion systems were different because the JMSDF tried to find the best way in the propulsion systems of future surface combatants. Akebono was a steam-powered vessel, but this class was diesel-powered vessels.^[1]

So equipment of this class were almost the same as those of the Akebono, with two American 3"/50 caliber Mark 21 guns (or Type 54, the Japanese version) with two Mark 22 single mounts controlled by Mark 51 director each, four Bofors 40 mm anti-aircraft guns with two dual mounts, a Hedgehog anti-submarine mortar and eight K-gun depth charge throwers.^[2] And in 1959, all Mark 21 guns were replaced by Mark 22 rapid-fire guns with Mark 34 single mounts and Mark 63 GFCS was introduced in exchange of the reduction of Bofors 40 mm guns.^[3]

This class had a twin-shaft machinery installation with two diesel engines (6,000ps each). This propulsion system was less powerful than the steam turbine machinery of the Akebono, but it was able to propel the ship at a top speed of 26 knots (48 km/h; 30 mph) still. The JMSDF appreciated the lower cost of maintenance of machinery of this class, so every Japanese destroyer escorts adopted diesel propulsion system until the period of gas turbine powered vessels.^[1]

Ships

Pennant no.	Name	Laid down	Launched	Commissioned	Decommissioned	Stricken
DE 202	Ikazuchi	1954	September 6, 1955	1956	1976	1983
DE 203	Inazuma	1954	August 4, 1955	1956	1977	1983

References

1. Yasuo Abe (June 2011). "2. Propulsion system (Hardware of JMSDF destroyers)". Ships of the World (in Japanese). Kaijin-sha (742): 106–111.
2. "3. Underwater weapons (Shipboard weapons of JMSDF 1952-2010)". Ships of the World (in Japanese). Kaijin-sha (721): 94–99. March 2010.
3. "2. Guns (Shipboard weapons of JMSDF 1952-2010)". Ships of the World (in Japanese). Kaijin-sha (721): 88–93. March 2010.