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The list of ship commissionings in 1974 includes a chronological list of ships commissioned in 1974. In cases where no official commissioning ceremony was held, the date of service entry may be used instead.
| Date | Operator | Ship | Class and type | Notes |
|---|---|---|---|---|
| March 12 |  Royal Danish Navy
|
HDMS Agdlek | Agdlek-class cutter | [1] |
| March 15 | Royal Danish Navy
|
HDMS Agpa | Agdlek-class cutter | [2] |
| June 28 |  DFDS Seaways
|
Dana Regina | Ferry | |
| July 5 |  Rederi Ab Sally
|
Viking 5 | Ferry | For Viking Line traffic |
| August |  People's Liberation Army Navy
|
Changzheng 1 | Type 091 submarine | Date of initial operational capability |
| September 30 |  Soviet Navy
|
Razumnyy (201) | Project 1135 large anti-submarine ship |