List of ship commissionings in 1921
The list of ship commissionings in 1921 includes a chronological list of all ships commissioned in 1921.
| Operator | Ship | Flag | Class and type | Pennant | Other notes | |
|---|---|---|---|---|---|---|
| 27 April |  Royal Netherlands Navy | K IV | K III-class submarine | K IV | ||
| 21 July |  United States Navy | Maryland | Colorado-class battleship | BB-46 | ||
| 10 August | United States Navy | California | Tennessee-class battleship | BB-44 | ||
| 11 October | Royal Netherlands Navy | K VI | K V-class submarine | K VI | ||
| 16 December | United States Navy | Salinas | Patoka-class oiler | AO-19 | ||
| Unknown |  Chilean Navy | Almirante Latorre | Almirante Latorre-class battleship | Purchased from the Royal Navy |
See also
