| Navy | The US Navy |
| Type | Medium landing ship |
| Class | LSM |
| Pennant | LSM 21 |
| Built by | Brown Shipbuilding Co. (Houston, Texas, U.S.A.) |
| Ordered | |
| Laid down | 24 Apr 1944 |
| Launched | 14 May 1944 |
| Commissioned | 19 Jun 1944 |
| End service | 23 Mar 1946 |
| Loss position | |
| History | Decommissioned on 23 March 1946. |
We don't have any commands listed for USS LSM 21 (LSM 21)
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