List of ship commissionings in 1978
The list of ship commissionings in 1978 includes a chronological list of all ships commissioned in 1978.
| Operator | Ship | Flag | Class and type | Pennant | Other notes | |
|---|---|---|---|---|---|---|
| 9 January | Birka Line | Prinsessan |  Finland | Ferry | Former Finnhansa with Finnlines | |
| 16 January | Sessan Linjen | Fennia |  Finland | Ferry | Chartered from Svea Line (Finland) | |
| February | Kefalliniki Sa | Ainos |  Greece | Ferry | Ex-Manic with La Traverse Nord-Sud Ltd | |
| 15 March | .svg.png) Imperial Iranian Navy | Khadang | Kaman-class fast attack craft | P223 | ||
| 23 March | .svg.png) Imperial Iranian Navy | Joshan | Kaman-class fast attack craft | P225 | ||
| 31 March | .svg.png) Imperial Iranian Navy | Paykan | Kaman-class fast attack craft | P224 | ||
| 31 March | .svg.png) Imperial Iranian Navy | Falakhon | Kaman-class fast attack craft | P226 | ||
| 31 March | .svg.png) Imperial Iranian Navy | Shamshir | Kaman-class fast attack craft | P227 | ||
| 3 April | Minoan Lines | Knossos |  Greece | Ferry | Former Saga with Swedish Lloyd | |
| 24 April | Svea Line (Finland) | Fennia |  Finland | Ferry | In Silja Line traffic | |
| 10 May | Polferries | Rogalin |  Poland | Ferry | Ex-Aallotar chartered by Polferries from Effoa | |
| 13 May | DFDS Seaways | Dana Anglia |  Denmark | Ferry | ||
| 9 June | P&O Normandy Ferries | nf Tiger |  United Kingdom | Ferry | Ex-Katteget with Jydsk Færgefart A/S | |
| 22 August | .svg.png) Imperial Iranian Navy | Gorz | Kaman-class fast attack craft | P228 | ||
| 1 September | Stena Line | Stena Oceanica |  Sweden | Ferry | Former Patricia with Swedish Lloyd. Heavily rebuilt before entered service. | |
| 26 October |  Royal Netherlands Navy | Kortenaer | Kortenaer-class frigate | F807 | ||
| 11 September | .svg.png) Imperial Iranian Navy | Gardouneh | Kaman-class fast attack craft | P229 | ||
| 9 November | Stena Line | Stena Baltica |  Sweden | Ferry | Former Peer Günt with Aarhus-Oslo Linie |