Japanese submarine chaser Cha-42

History
Empire of Japan
Name	Cha-42
Laid down	10 July 1942
Launched	7 June 1943
Completed	27 August 1943
Commissioned	27 August 1943
Stricken	3 May 1947
Homeport	Sasebo
Fate	Torpedoed and sunk by USS Hardhead, 23 June 1945
General characteristics
Class and type	No.1-class submarine chaser
Displacement	130 long tons (132 t) standard
Length	29.20 m (95 ft 10 in) overall
Beam	5.65 m (18 ft 6 in)
Draught	1.97 m (6 ft 6 in)
Propulsion	1 × intermediate diesel shingle shaft, 400 bhp (300 kW)
Speed	11.0 knots (20.4 km/h; 12.7 mph)
Range	1,000 nmi (1,900 km; 1,200 mi) at 10.0 kn (18.5 km/h; 11.5 mph)
Complement	32
Sensors and processing systems	1 × dunking hydrophone 1 × simple sonar
Armament	1 × 7.7 mm machine gun 22 × depth charges From mid 1943, the 7.7 mm machine gun was replaced with a 13.2 mm machine gun

Cha-42 or No. 42 (Japanese: 第四十二號驅潜特務艇) was a No.1-class submarine chaser of the Imperial Japanese Navy that served during World War II.

History

She was laid down on 10 July 1942 and launched on 7 June 1943. On 27 August 1943, she was completed, commissioned, and assigned to the Sasebo Defense Force, Sasebo Naval District. On 15 October 1943, she was reassigned to the 31st Guard Unit Unit, Manila. On 20 February 1945, she was reassigned to the 21st Special Base Force, Surabaya, Java.

On 23 June 1945, she was attacked and sunk by a torpedo from the American submarine USS Hardhead southeast of the Masalembu Islands at 05°44′S 114°16′E. She was removed from the Navy List on 3 May 1947.