List of ship launches in 1973
The list of ship launches in 1973 includes a chronological list of ships launched in 1973. In cases where no official launching ceremony was held, the date built or completed may be used instead.
| Date | Ship | Class and type | Builder | Location | Country | Notes |
| 11 January | Ferry | A/S Nakskov Skibsværf | Nakskov |  Denmarkcite web|url=http://www.faktaomfartyg.se/svealand_1973.htm|title=M/S Svealand|accessdate=29 March 2016 |language=Swedish USS|Parche|SSN-683|2sclass|Sturgeon|submarine |