# List of ship launches in 1742

The list of ship launches in 1742 includes a chronological list of some ships launched in 1742.
| Date | Country | Builder | Location | Ship | Class | Notes |
| 25 February | Great Britain | Philemon Perry | Blackwall | Mortar | Comet-class bomb vessel | For Royal Navy. |
| 26 February | Great Britain | Philemon Perry | Blackwall | Firedrake | Comet-class bomb vessel | For Royal Navy. |
| 27 February | Great Britain | Thomas West | Deptford Dockyard | Wolf | Wolf-class sloop | For Royal Navy. |
| 15 March | Great Britain | Thomas Snelgrove | Limehouse | Serpent | Comet-class bomb vessel | For Royal Navy. |
| 29 March | Great Britain | James Taylor | Rotherhithe | Comet | Comet-class bomb vessel | For Royal Navy. |
| 29 March | Denmark–Norway | | Copenhagen | Crown Yacht | | For Dano-Norwegian Navy. |
| 24 April | Great Britain | | Chatham Dockyard | Stirling Castle | Third rate | For Royal Navy. |
| 26 May | Great Britain | Bird | Rotherhithe | Medway | Fourth rate | For Royal Navy. |
| 4 June | New France | Rene-Nicolas Levasseur | Quebec City | Le Canada | Sixth rate | For French Navy. |
| 22 June | Great Britain | John Barnard | Ipswich | Granado | Bomb vessel | For Royal Navy. |
| 23 June | Great Britain | Wells | Deptford | Dreadnought | Fourth rate | For Royal Navy. |
| 8 July | Great Britain | John Buxton | Deptford | Lowestoffe | Sixth rate | For Royal Navy. |
| 20 July | Great Britain | Peirson Lock | Plymouth Dockyard | Solebay | Sixth rate | For Royal Navy. |
| 13 August | Kingdom of France | Augustino Scolaro | Toulon | La Chasse | Galley | For French Navy. |
| 19 August | Great Britain | John Buxton | Rotherhithe | Otter | Wolf-class sloop | For Royal Navy. |
| 5 September | Denmark–Norway | | Copenhagen | Tre Kroner | Third rate | For Dano-Norwegian Navy. |
| 5 September | Denmark–Norway | | Copenhagen | Wenden | Third Rate | For Dano-Norwegian Navy. |
| 13 September | Kingdom of France | Joseph-Marie-Blaise Coulomb | Toulon | Le Trident | Third rate | For French Navy. |
| 2 October | Kingdom of France | Augustino Scolaro | Toulon | La Decouverte | Galley | For French Navy. |
| 3 November | Great Britain | Hugh Blaydes | Hull | Anglesea | Fifth rate | For Royal Navy. |
| 30 December | Great Britain | John Quallett | Rotherhithe | Saltash | Baltimore-class sloop | For Royal Navy. |
| 30 December | Great Britain | Thomas Wes | Deptford Dockyard | Baltimore | Baltimore-class sloop | For Royal Navy. |
| Unknown date | India | | Bombay | Bombay | Sloop | For Bengal Pilot Service. |
| Unknown date | Dutch Republic | Charles Bentam | Amsterdam | Edam | Fourth rate | For Dutch Navy. |
| Unknown date | Denmark–Norway | | | Falster | Fifth rate | For Dano-Norwegian Navy. |
| Unknown date | Kingdom of France | Pierre Chabert | Marseille | La Duchesse | Ferme-class galley | For French Navy. |
| Unknown date | Kingdom of France | Jean Reynoir | Marseille | La Valeur | France-class Galley | For French Navy. |
| Unknown date | Dutch Republic | Charles Bentam | Amsterdam | Leeuwenhorst | Fourth rate | For Dutch Navy. |
| Unknown date | Great Britain | George Rowcliffe | Southampton | Portsmouth | Storeship | For Royal Navy. |
| Unknown date | Dutch Republic | | Amsterdam | Raaf | Sixth rate | For Dutch Navy. |
| Unknown date | Spain | | Barcelona | San Juan de Pomosana | Privateer | For private owner. |
| Unknown date | India | | Bombay | Success | Full-rigged ship | For British East India Company. |
| Unknown date | Dutch Republic | Charles Bentam | Amsterdam | Valkenburg | Sixth rate | For Dutch Navy. |