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The list of ship decommissionings in 1980 includes a chronological list of all ships decommissioned in 1980.
| Operator | Ship | Flag | Class and type | Fate | Other notes | |
|---|---|---|---|---|---|---|
| 17 January | Tor Line | Tor Scandinavia |  Sweden
|
Cruiseferry | Chartered to Scan Arab Expo | |
| 6 March | Scan Arab Expo | Tor Scandinavia | Sweden
|
Cruiseferry | End of charter, returned to Tor Line | |
| July |  Royal Navy
|
Kent | County-class destroyer | Scrapped | Accommodation ship until 1987 and training hulk until 1993[1] | |
| 11 July | Bore Line | Bore Star |  Finland
|
Ferry | Sold to Effoa | Continued in Silja Line traffic |
| 1 September | Effoa | Silja Star | Finland
|
Ferry | Renamed Silja Star | Continued in Silja Line traffic |
| 16 December | Tor Line | Tor Scandinavia | Sweden
|
Cruiseferry | Chartered to an unknown Dutch company | |
| Date uncertain | Royal Navy
|
London | County-class destroyer | Sold to Pakistan | Renamed PNS Babur | |
| Date uncertain |  Yugoslav Navy
|
Split |  Yugoslavia
|
Destroyer | Decommissioned | Scrapped in 1986 |