Cha-221 or No. 221 (Japanese: 第二百二十一號驅潜特務艇) was a No.1-class auxiliary submarine chaser of the Imperial Japanese Navy that served during World War II.
| History | |
|---|---|
 Imperial Japanese Navy | |
| Name | Cha-221 |
| Builder | Shikoku Dock Industry Co., Ltd. Takamatsu |
| Laid down | 18 January 1944 |
| Launched | 3 July 1944 |
| Completed | 28 August 1944 |
| Commissioned | 28 August 1944 |
| Decommissioned | 1 December 1945 |
| Homeport | Osaka |
| Fate | released to the Ministry of Transportation, 1 January 1948 |
| History | |
 Japan Maritime Safety Agency | |
| Name | Minesweeper No. 221 |
| Acquired | 1 May 1948 |
| Renamed | Yoshikiri (MS-02), 1 December 1951 |
| Homeport | Osaka |
| Fate | transferred to Japan Maritime Self-Defense Force, 1 July 1954 |
| History | |
 Japan Maritime Self-Defense Force | |
| Acquired | 1 July 1954 |
| Decommissioned | 31 March 1962 |
| Renamed | Yoshikiri (MSI-690) |
| Fate | unknown |
| General characteristics | |
| Class and type | No.1-class Submarine chaser |
| Displacement | 130 long tons (132 t) standard[1] |
| 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 |
|
| Speed | 11.0 knots (12.7 mph; 20.4 km/h) |
| Range | 1,000 nmi (1,900 km) at 10.0 kn (11.5 mph; 18.5 km/h) |
| Complement | 32 |
| Armament |
|
History
editShe was laid down on 18 January 1944 at the Takamatsu shipyard of Shikoku Dock Industry Co., Ltd. (株式會社四国船渠工業所) and launched on 3 July 1944.[1][2] She was completed and commissioned on 28 August 1944,[2] fitted with armaments at the Kure Naval Arsenal, and assigned to the Kii Defense Unit, Osaka Guard District under commanding officer Teruo Takeuchi.[2] She mostly conducted patrol and escort duties out of the port of Yura, Wakayama.[2] On 6 May 1945, she was attacked and damaged by two Consolidated B-24 Liberators off Komatsushima.[2] She was repaired at Osaka in June 1945.[2] Cha-221 survived the war.[2]
On 1 December 1945, she was demobilized and enrolled as a minesweeper by the occupation forces.[2] On 1 January 1948, she was released to the Ministry of Transportation.[2] On 1 May 1948, she was assigned to the Japan Maritime Safety Agency, a sub-agency of the Ministry of Transportation, and designated Minesweeper No. 221 (MS-02) on 20 August 1948.[2] On 1 December 1951, she was renamed Yoshikiri (MS-02) (よしきり).[2] On 1 July 1954, she was transferred to the newly created Japan Maritime Self-Defense Force and designated as Yoshikiri (MS-02) and later MSI-690.[2] She was delisted on 31 March 1962.[2]