List of ship launches in 1742

! 25 February

| {{flagcountry|Kingdom of Great Britain}}

| Philemon Perry

| Blackwall

| {{HMS|Mortar|1742|2}}

| {{sclass|Comet|bomb vessel}}

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=5468 |title=British bomb vessel 'Mortar' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 26 February

| {{flagcountry|Kingdom of Great Britain}}

| Philemon Perry

| Blackwall

| {{HMS|Firedrake|1742|2}}

| {{sclass|Comet|bomb vessel}}

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=4262 |title=British bomb vessel 'Firedrake' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 27 February

| {{flagcountry|Kingdom of Great Britain}}

| Thomas West

| Deptford Dockyard

| {{HMS|Wolf|1742|2}}

| {{Sclass|Wolf|sloop}}

| For Royal Navy.

! 15 March

| {{flagcountry|Kingdom of Great Britain}}

| Thomas Snelgrove

| Limehouse

| {{HMS|Serpent|1742|2}}

| {{sclass|Comet|bomb vessel}}

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=6602 |title=British bomb vessel 'Serpent' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 29 March

| {{flagcountry|Kingdom of Great Britain}}

| James Taylor

| Rotherhithe

| {{HMS|Comet|1742|2}}

| {{sclass|Comet|bomb vessel}}

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=3647 |title=British bomb vessel 'Comet' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 29 March

| {{flag|Denmark–Norway}}

|

| Copenhagen

| {{HDMS|Crown Yacht|1742|2}}

|

| For Dano-Norwegian Navy.{{London Gazette |issue=8106 |date=30 March 1742 |page=2 }}

! 24 April

| {{flagcountry|Kingdom of Great Britain}}

|

| Chatham Dockyard

| {{HMS|Stirling Castle|1742|2}}

| Third rate

| For Royal Navy.

! 26 May

| {{flagcountry|Kingdom of Great Britain}}

| Bird

| Rotherhithe

| {{HMS|Medway|1742|2}}

| Fourth rate

| For Royal Navy.

! 4 June

| {{flagicon|Kingdom of France}} New France

| Rene-Nicolas Levasseur

| Quebec City

| {{ship|French ship|Le Canada|1742|2}}

| Sixth rate

| For French Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=15785 |title=French Sixth Rate flûte 'Le Canada' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 22 June

| {{flagcountry|Kingdom of Great Britain}}

| John Barnard

| Ipswich

| {{HMS|Granado|1742|2}}

| Bomb vessel

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=4527 |title=British bomb vessel 'Granado' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 23 June

| {{flagcountry|Kingdom of Great Britain}}

| Wells

| Deptford

| {{HMS|Dreadnought|1742|2}}

| Fourth rate

| For Royal Navy.

! 8 July

| {{flagcountry|Kingdom of Great Britain}}

| John Buxton

| Deptford

| {{HMS|Lowestoffe|1742|2}}

| Sixth rate

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=5174 |title=British Sixth Rate ship 'Lowestoffe' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 20 July

| {{flagcountry|Kingdom of Great Britain}}

| Peirson Lock

| Plymouth Dockyard

| {{HMS|Solebay|1742|2}}

| Sixth rate

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=6531 |title=British Sixth Rate ship 'Solebay' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 13 August

| {{flag|Kingdom of France}}

| Augustino Scolaro

| Toulon

| {{ship|French ship|La Chasse|1742|2}}

| Galley

| For French Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=16794 |title=French Galley 'La Chasse' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 19 August

| {{flagcountry|Kingdom of Great Britain}}

| John Buxton

| Rotherhithe

| {{HMS|Otter|1742|2}}

| {{sclass|Wolf|sloop}}

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=5652 |title=British sloop 'Otter' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 5 September

| {{flag|Denmark–Norway}}

|

| Copenhagen

| {{HDMS|Tre Kroner|1742|2}}

| Third rate

| For Dano-Norwegian Navy.{{London Gazette |issue=8152 |date=7 September 1742 |page=5 }}{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=687 |title=Danish Third Rate ship of the line 'Tre Kroner' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 5 September

| {{flag|Denmark–Norway}}

|

| Copenhagen

| {{HDMS|Wenden|1742|2}}

| Third Rate

| For Dano-Norwegian Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=688 |title=Danish Third Rate ship of the line 'Wenden' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 13 September

| {{flag|Kingdom of France}}

| Joseph-Marie-Blaise Coulomb

| Toulon

| {{ship|French ship|Le Trident|1742|2}}

| Third rate

| For French Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=2365 |title=French Third Rate ship of the line 'Le Trident' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 2 October

| {{flag|Kingdom of France}}

| Augustino Scolaro

| Toulon

| {{ship|French ship|La Decouverte|1742|2}}

| Galley

| For French Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=16795 |title=French galle 'La Decouverte' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 3 November

| {{flagcountry|Kingdom of Great Britain}}

| Hugh Blaydes

| Hull

| {{HMS|Anglesea|1742|2}}

| Fifth rate

| For Royal Navy.

! 30 December

| {{flagcountry|Kingdom of Great Britain}}

| John Quallett

| Rotherhithe

| {{HMS|Saltash|1742|2}}

| {{sclass|Baltimore|sloop}}

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=6416 |title=British sloop 'Saltash' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! 30 December

| {{flagcountry|Kingdom of Great Britain}}

| Thomas Wes

| Deptford Dockyard

| {{HMS|Baltimore|1742|2}}

| {{sclass|Baltimore|sloop}}

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=3221 |title=British sloop 'Baltimore' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! Unknown date

| 22px India

|

| Bombay

| Bombay

| Sloop

| For Bengal Pilot Service.{{cite book|last=Wadia |first=R. A. |orig-year=1957 |year=1986 |title=The Bombay Dockyard and the Wadia Master Builders |publisher=Foudroyant Committee of The Society for Nautical Research |location=Bombay |page=330 | url=https://archive.org/details/in.ernet.dli.2015.57463/page/n445/mode/2up}}

! Unknown date

| {{flag|Dutch Republic}}

| Charles Bentam

| Amsterdam

| {{ship|Dutch ship|Edam|1742|2}}

| Fourth rate

| For Dutch Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=1039 |title=Dutch Fourth Rate ship of the line 'Edam' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! Unknown date

| {{flag|Denmark–Norway}}

|

|

| {{HDMS|Falster|1742|2}}

| Fifth rate

| For Dano-Norwegian Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=746 |title=Danish Fifth Rate frigate 'Falster' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! Unknown date

| {{flag|Kingdom of France}}

| Pierre Chabert

| Marseille

| {{ship|French ship|La Duchesse|1742|2}}

| {{sclass|Ferme|galley}}

| For French Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=16780 |title=French galley 'La Duchesse' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! Unknown date

| {{flag|Kingdom of France}}

| Jean Reynoir

| Marseille

| {{ship|French ship|La Valeur|1742|2}}

| {{sclass|France|Galley}}

| For French Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=16789 |title=French galley 'La Valeur' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! Unknown date

| {{flag|Dutch Republic}}

| Charles Bentam

| Amsterdam

| {{ship|Dutch ship|Leeuwenhorst|1742|2}}

| Fourth rate

| For Dutch Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=1040 |title=Dutch Fourth Rate ship of the line 'Leeuwenhorst' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! Unknown date

| {{flagcountry|Kingdom of Great Britain}}

| George Rowcliffe

| Southampton

| {{HMS|Portsmouth|1742|2}}

| Storeship

| For Royal Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=5904 |title=British storeship 'Portsmouth' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! Unknown date

| {{flag|Dutch Republic}}

|

| Amsterdam

| {{ship|Dutch ship|Raaf|1742|2}}

| Sixth rate

| For Dutch Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=1554 |title=Dutch Sixth Rate frigate 'Raaf' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! Unknown date

| {{flag|Spain|1701}}

|

| Barcelona

| San Juan de Pomosana

| Privateer

| For private owner.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=20072 |title=Spanish Privateer 'San Juan de Pomosana' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}

! Unknown date

| 22px India

|

| Bombay

| {{ship|HEIC ship|Success|1742|2}}

| Full-rigged ship

| For British East India Company.

! Unknown date

| {{flag|Dutch Republic}}

| Charles Bentam

| Amsterdam

| {{ship|Dutch ship|Valkenburg|1742|2}}

| Sixth rate

| For Dutch Navy.{{cite web |url=https://threedecks.org/index.php?display_type=show_ship&id=1605 |title=Dutch Sixth Rate frigate 'Valkenburg' (1742) |publisher=Threedecks |accessdate=19 May 2021 }}