# List of ship launches in 1804

The following ships were launched in 1804.
| Date | Country | Builder | Location | Ship | Class | Notes |
| 12 January | France | | Rochefort | Lion | Téméraire-class ship of the line | For French Navy. |
| 12 January | France | Antoine, Louis & Mathurin Crucy | Lorient | Palinure | Palinure-class brig | For French Navy. |
| 13 January | New South Wales | Thomas Moore | Sydney | Integrity | Cutter | For Philip Gidley King. |
| January | Bermuda | Goodrich & Co | Bermuda | Ballahoo | Ballahoo-class schooner | For Royal Navy. |
| January | France | | Saint-Servan | Caroline | Corvette | For Robert Surcouf and Louis Blaize de Maisonneuve. |
| 12 February | India | Matthew Smith | Calcutta | Resource | Full-rigged ship | For private owner. |
| 27 February | United Kingdom | Pitcher | Northfleet | Eagle | Repulse-class ship of the line | For Royal Navy. |
| 27 February | United Kingdom | Hall, Buchan & Co | Aberdeen | The Marquis of Huntley | Merchantman | For Messrs. Fraser & Mole. |
| February | France | | Saint-Malo | Général Pérignon | Privateer | For private owner. |
| February | France | | Ghent | City of Ghent | Armed vessel | For military use. |
| 8 March | India | Hudson | Calcutta | Hope | Merchantman | For private owner. |
| 10 March | United Kingdom | Thomas King | Dover | Kingfisher | Merlin-class ship-sloop | For Royal Navy. |
| 22 March | United Kingdom | John Dudman | Deptford | Tigress | Archer-class gun-brig | For Royal Navy. |
| 26 March | United Kingdom | George Parsons | Bursledon | Fly | Merlin-class ship-sloop | For Royal Navy. |
| 27 March | France | Antoine, Louis & Mathurin Crucy | Lorient | Néarque | Abeille-class brig | For French Navy. |
| 31 March | United Kingdom | | Newcastle upon Tyne | Albury | Snow | For T. Boyle. |
| March | Portugal | | Damão | São Francisco Xavier | Third rate | For Portuguese Navy. |
| March | United States | Richard Hayden | Saybrook, Connecticut | Snake in the Grass | Schooner | For Richard Hayden. |
| 12 April | United Kingdom | Jacob & Sons | Milford | Nautilus | Sloop-of-war | For Royal Navy. |
| 17 April | France | Jean Baudry | Bayonne | Lynx | Lynx-class brig | For French Navy. |
| 24 April | France | Pierre-Elisabeth Rolland | Rochefort | Armide | Armide-class frigate | For French Navy. |
| 26 April | United Kingdom | John Preston | Great Yarmouth | Helena | Sloop-of-war | For Royal Navy. |
| 26 April | United Kingdom | Thomas Pitcher | Northfleet | Bruiser | Archer-class gun-brig | For Royal Navy. |
| 28 April | United Kingdom | George Tower & Co | Aberdeen | Duchess of Bedford | Merchantman | For private owner, but hired by the Royal Navy. |
| April | India | Thompson | Bengal | General Lake | Merchantman | For private owner. |
| 3 May | United Kingdom | Thomas Pitcher | Northfleet | Blazer | Archer-class gun-brig | For Royal Navy. |
| 7 May | United Kingdom | John Dudman & Co. | Deptford | Manly | Archer-class gun-brig | For Royal Navy. |
| 8 May | United Kingdom | Josiah & Thomas Brindley | Frindsbury | Flamer | Archer-class gun-brig | For Royal Navy. |
| 10 May | United Kingdom | James Martin Hillhouse | Bristol | Albacore | Merlin-class sloop | For Royal Navy. |
| 12 May | United Kingdom | Peter Everitt Mestaer | Rotherhithe | Lord Keith | East Indiaman | For British East India Company. |
| 12 May | United Kingdom | Edward Tippett and Henry Peake | Deptford | Royal Sovereign | Royal Yacht | For George III. |
| 23 May | United Kingdom | Perry, Green & Wells | Blackwall Yard | Saracen | Cruizer-class brig-sloop | For Royal Navy. |
| 26 May | United Kingdom | Richard Symons & Co. | Falmouth | Despatch | Cruizer-class brig-sloop | For Royal Navy. |
| 28 May | Russia | F. Ignatyev | Archangelsk | Silnyi | Selafail-class ship of the line | For Imperial Russian Navy. |
| 4 June | United Kingdom | Crucy et Cie. | Nantes | Président | Frigate | For French Navy. |
| 7 June | France | | Saint-Malo | Lutin | Curieux-class brig | For French Navy. |
| 11 June | United Kingdom | Cortney | Chester | Contest | Archer-class gun-brig | For Royal Navy. |
| 14 June | United Kingdom | Tindall | Scarborough | Centurion | West Indiaman | For Mr. Tindall. |
| 23 June | France | Antoine, Louis & Mathurin Crucy | Nantes | Pandour | Curieux-class brig | For French Navy. |
| 28 June | France | Danet | Antwerp | Phaeton | Palinure-class brig | For French Navy. |
| 30 June | United Kingdom | Thomas Pitcher | Northfleet | Clinker | Archer-class gun-brig | For Royal Navy. |
| 30 June | United Kingdom | Thomas Pitcher | Northfleet | Cracker | Archer-class gun-brig | For Royal Navy. |
| 2 July | United Kingdom | Josiah & Thomas Brindley | Frindsbury | Firm | Archer-class gun-brig | For Royal Navy. |
| 8 July | France | Antoine, Louis & Mathurin Crucy | Nantes | Faune | Abeille-class brig | For French Navy. |
| 8 July | United Kingdom | Henry Adams | Bucklers Hard | Swiftsure | Swiftsure-class ship of the line | For Royal Navy. |
| 9 July | France | Pierre-Joseph Pénétraut | Dunkerque | Sylphe | Abeille-class brig | For French Navy. |
| 10 July | France | Rolland | Rochefort | Actéon | Lynx-class brig | For French Navy. |
| 10 July | Russia | M. K. Surotsov | Kherson | Pravyi | Third rate | For Imperial Russian Navy. |
| 12 July | France | Enterprise Ethéart | Saint-Malo | Espiègle | Palimure-class brig | For French Navy. |
| 14 July | Denmark-Norway | | Copenhagen | Pærlen | Fifth rate | For Dano-Norwegian Navy. |
| 19 July | France | Jean Baudrey | Bayonne | Départment des Landes | Corvette | For French Navy. |
| 21 July | United Kingdom | William Rowe | Newcastle upon Tyne | Acute | Archer-class gun-brig | For Royal Navy. |
| 21 July | United Kingdom | Josiah & Thomas Brindley | King's Lynn | Furious | Archer-class gun-brig | For Royal Navy. |
| 21 July | United Kingdom | Mark Richards | Hythe | Steady | Archer-class gun-brig | For Royal Navy. |
| 23 July | United Kingdom | | Woolwich Dockyard | Lively | Lively-class frigate | For Royal Navy. |
| 23 July | United Kingdom | R. Davey | Topsham | Safeguard | Archer-class gun-brig | For Royal Navy. |
| 25 July | United Kingdom | O. Ayles | Exeter | Piercer | Archer-class gun-brig | For Royal Navy. |
| 25 July | United Kingdom | Perry, Wells & Green | Blackwall Yard | Raven | Cruizer-class brig-sloop | For Royal Navy. |
| 26 July | United Kingdom | John Dudman | Deptford | Teazer | Archer-class gun-brig | For Royal Navy. |
| 27 July | United Kingdom | William Wallis | Blackwall | Biter | Archer-class gun-brig | For Royal Navy. |
| 28 July | United Kingdom | William Courtney | Chester | Defender | Archer-class gun-brig | For Royal Navy. |
| 4 August | United Kingdom | Dudman & Co. | Deptford | Pelter | Archer-class gun-brig | For Royal Navy. |
| 4 August | United Kingdom | Benjamin Tanner | Deptford | Wolf | Merlin-class sloop | For Royal Navy. |
| 6 August | United Kingdom | Matthew Warren | Brightlingsea | Sparkler | Archer-class gun-brig | For Royal Navy. |
| 7 August | United Kingdom | Adams | Southampton | Alert | Gun-brig | For Royal Navy. |
| 7 August | United Kingdom | R. B. Roxby | Wearmouth | Hardy | Archer-class gun-brig | For Royal Navy. |
| 7 August | United Kingdom | Peter Atkinson & Co | Hull | Scout | Cruizer-class brig-sloop | For Royal Navy. |
| 8 August | United Kingdom | Perry, Wells & Green | Blackwall Yard | Beagle | Cruizer-class brig-sloop | For Royal Navy. |
| 8 August | United Kingdom | Matthew Warren | Brightlingsea | Tickler | Archer-class gun-brig | For Royal Navy. |
| 9 August | United Kingdom | Robert Adams | Southampton | Attack | Archer-class gun-brig | For Royal Navy. |
| 10 August | United Kingdom | Balthazar & Edward Adams | Buckler's Hard | Growler | Archer-class gun-brig | For Royal Navy. |
| 11 August | United Kingdom | William Rowe | Newcastle upon Tyne | Bouncer | Brig | For Royal Navy. |
| 15 August | United Kingdom | Daniel & Samuel Brent | Rotherhithe | Reindeer | Cruizer-class brig-sloop | For Royal Navy. |
| 17 August | United Kingdom | Edwards | Shoreham-by-Sea | Caroline | West Indiaman | For private owner. |
| 21 August | United Kingdom | Benjamin Tanner | Dartmouth | Staunch | Archer-class gun-brig | For Royal Navy. |
| 22 August | United Kingdom | Frances Barnard, Sons & Co. | Deptford | Elk | Cruizer-class brig-sloop | For Royal Navy. |
| 22 August | United Kingdom | Frances Barnard, Sons & Co. | Deptford | Harrier | Cruizer-class brig-sloop | For Royal Navy. |
| 24 August | United Kingdom | Joseph Graham | Harwich | Pincher | Archer-class gun-brig | For Royal Navy. |
| 25 August | Denmark-Norway | | Copenhagen | Gluckstadt | Sloop-of-war | For Dano-Norwegian Navy. |
| 31 August | United Kingdom | Samuel Brent | Rotherhithe | Convulsion | Convulsion-class bomb vessel | For Royal Navy. |
| 3 September | United Kingdom | John Perry | Blackwall | Destruction | Convulsion-class bomb vessel | For Royal Navy. |
| 4 September | United Kingdom | John Preston | Great Yarmouth | Musquito | Cruizer-class brig-sloop | For Royal Navy. |
| 5 September | United Kingdom | Thomas Hustwick | Kingston | Lady Medelina Sinclair | Full-rigged ship | For William Osbourne. |
| 6 September | United Kingdom | Palmer | Great Yarmouth | Cygnet | Merlin-class ship-sloop | For Royal Navy. |
| 6 September | United Kingdom | Brockbank | Lancaster | Harriet | Full-rigged ship | For Messrs. Dodson & Co. |
| 7 September | United Kingdom | John Dudman & Co. | Deptford | Plumper | Archer-class gun-brig | For Royal Navy. |
| 7 September | France | Danet | Antwerp | Voltigeur | Palinure-class brig | For French Navy. |
| 8 September | United Kingdom | Francis Hurry | North Shields | Agincourt | Merchantman | For Francis Hurry. |
| 18 September | United Kingdom | Nicholas Bools & William Good | Bridport | Attentive | Archer-class gun-brig | For Royal Navy. |
| 20 September | United Kingdom | R. B. Roxby | Wearmouth | Gallant | Archer-class gun-brig | For Royal Navy. |
| 22 September | United Kingdom | John King | Dover | Espoir | Cruizer-class brig-sloop | For Royal Navy. |
| September | United Kingdom | Robert Davy | Topsham | Swinger | Archer-class gun-brig | For Royal Navy. |
| 6 October | Denmark-Norway | Frantz Hohlenberg | Copenhagen | Prinds Christian Frederik | Third rate | For Dano-Norwegian Navy. |
| 20 October | United Kingdom | Robert Davy | Topsham | Rapid | Archer-class gun-brig | For Royal Navy. |
| 26 October | Russia | M. K. Surotsov | Kherson | Voin | Voin-class frigate | For Imperial Russian Navy. |
| 29 October | Russia | V. I. Potapov | Kherson | Diomid | Transport ship | For Imperial Russian Navy. |
| October | United Kingdom | Nicholas Bools & William Good | Bridport | Cheerly | Archer-class gun-brig | For Royal Navy. |
| October | United Kingdom | Jabez Bayley | Ipswich | Daring | Archer-class gun-brig | For Royal Navy. |
| October | United Kingdom | John King | Dover | Moselle | Cruizer-class brig-sloop | For Royal Navy. |
| 2 November | United Kingdom | John Bass | Lympstone | Urgent | Archer-class gun-brig | For Royal Navy. |
| 3 November | United Kingdom | James Betts | Mistley | Combatant | Combatant-class sloop | For Royal Navy. |
| 3 November | United Kingdom | Dudman | Deptford | Surrey | East Indiaman | For British East India Company. |
| 5 November | United Kingdom | Ralston & Smith | Ayr | Margaret | Merchantman | For private owner. |
| 17 November | France | | Rochefort | Achille | Téméraire-class ship of the line | For French Navy. |
| 17 November | United Kingdom | Joseph Tucker | Plymouth Dockyard | Circe | Thames-class frigate | For Royal Navy. |
| 17 November | United Kingdom | | Plymouth Dockyard | Hibernia | First rate | For Royal Navy. |
| 17 November | United Kingdom | | Plymouth Dockyard | Pallas | Thames-class frigate | For Royal Navy. |
| 20 November | United Kingdom | John Dudman | Deptford | Amaranthe | Cruizer-class brig-sloop | For Royal Navy. |
| 21 November | United Kingdom | | Woolwich Dockyard | Jason | Thames-class frigate | For Royal Navy. |
| November | United Kingdom | William Gibson | Hull | Dauntless | Combatant-class sloop | For Royal Navy. |
| November | United Kingdom | Blunt | Hull | Valorous | Combatant-class sloop | For Royal Navy. |
| 3 December | United Kingdom | Frances Barnard, Son, & Roberts | Deptford | Phoenix | East Indiaman | For British East India Company. |
| 6 December | United Kingdom | Josiah & Thomas Brindley | King's Lynn | Griper | Archer-class gun-brig | For Royal Navy. |
| 25 December | United Kingdom | Balthazar Adams | Buckler's Hard | Fervent | Archer-class gun-brig | For Royal Navy. |
| 15 December | France | | Saint-Malo | Piémontaise | Consolante-class frigate | For French Navy. |
| 18 December | United Kingdom | Graham | Harwich | Fearless | Gun-brig | For Royal Navy. |
| 20 December | United Kingdom | Pitcher | Northfleet | Devonshire | East Indiaman | For British East India Company. |
| 31 December | United Kingdom | Sir Henry Peake | Deptford | Hebe | Fifth rate | For Royal Navy. |
| Unknown date | United Kingdom | Warren | | Adamant | Merchantman | For Mr Warren. |
| Unknown date | India | | Bombay | Admiral Rainier | Luggage boat | For British East India Company. |
| Unknown date | Russia | | Kherson | Aleksandr | Brig | For Imperial Russian Navy. |
| Unknown date | France | | Lorient | Algésiras | Téméraire-class ship of the line | For French Navy. |
| Unknown date | France | | Dunkerque | Ameland | Full-rigged ship | For Batavian Navy. |
| Unknown date | Bermuda | Goodrich & Co | Bermuda | Barracouta | Ballahoo-class schooner | For Royal Navy. |
| Unknown date | Russia | Vasily Vlasov | Cronstadt | Begun | Begun-class cutter | For Imperial Russian Navy. |
| Unknown date | United Kingdom | | Howden | Blenheim | Merchantman | For private owner. |
| Unknown date | United Kingdom | John & Philip Laing | Sunderland | Bolina | Merchantman | For W. Bell. |
| Unknown date | Bermuda | Goodrich & Co | Bermuda | Capelin | Ballahoo-class schooner | For Royal Navy. |
| Unknown date | Batavian Republic | | | Crul | Full-rigged ship | For Batavian Navy. |
| Unknown date | United Kingdom | Nicholas Bools & William Good | Bridport | Dash | Cutter | For George Browne. |
| Unknown date | Denmark-Norway | Andreas Bodenhoff | Copenhagen | Diana | Sixth rate | For Dano-Norwegian Navy. |
| Unknown date | Russia | | Kherson | Diana | Brig | For Imperial Russian Navy. |
| Unknown date | United Kingdom | | Aberdeen | Dowson | Merchantman | For Mr. Gibbons. |
| Unknown date | United Kingdom | | Falmouth | Duke of Montrose | Packet ship | For private owner. |
| Unknown date | United Kingdom | | | Eclipse | Schooner | For French Navy. |
| Unknown date | Russia | | | Elisaveta | Brig | For Imperial Russian Navy. |
| Unknown date | Ottoman Empire | | | Fal-i Hayr | Fifth rate | For Ottoman Navy. |
| Unknown date | Bermuda | | | Flying Fish | Ballahoo-class schooner | For Royal Navy. |
| Unknown date | India | | Calcutta | Fortitude | Merchantman | For private owner. |
| Unknown date | Batavian Republic | | | Gijzel | Full-rigged ship | For Batavian Navy. |
| Unknown date | India | A. Wadell | Calcutta | Grappler | Brig | For British East India Company. |
| Unknown date | Bermuda | Goodrich & Co | Bermuda | Grouper | Ballahoo-class schooner | For Royal Navy. |
| Unknown date | United Kingdom | John Brockbank | Lancaster | Harriet | Merchantman | For private owner. |
| Unknown date | United Kingdom | John Dudman | Deptford | Haughty | Archer-class gun-brig | For Royal Navy. |
| Unknown date | United Kingdom | | Leith | Hebe | Merchantman | For Mr. Strachan. |
| Unknown date | India | Bacon, Harvey & Co. | Calcutta | Henry Wellesley | Barque | For private owner. |
| Unknown date | United Kingdom | Nicholas Bools & William Good | Bridport | Hope | Smack | For Leith Shipping Co. |
| Unknown date | France | | | Hermione | Hortense-class frigate | For French Navy. |
| Unknown date | Bermuda | Goodrich & Co | Bermuda | Herring | Ballahoo-class schooner | For Royal Navy. |
| Unknown date | France | | Cette | Hirondelle | Privateer | For private owner. |
| Unknown date | United Kingdom | | Sunderland | Janes | Merchantman | For private owner. |
| Unknown date | United Kingdom | | Chepstow | John | West Indiaman | For J. Maxse & Co. |
| Unknown date | United Kingdom | | Great Yarmouth | Lady Boringdon | Merchantman | For private owner. |
| Unknown date | United Kingdom | | Leith | Lord Melville | Merchantman | For private owner. |
| Unknown date | United Kingdom | Temple | South Shields | Lord Melville | Sloop | For private owner. |
| Unknown date | Bermuda | Goodrich & Co | Bermuda | Mackerel | Ballahoo-class schooner | For Royal Navy. |
| Unknown date | United Kingdom | Holt & Richardson | Whitby | Majestic | Merchantman | For Aaron & Edward Chapman and Robert Campion. |
| Unknown date | United Kingdom | Temple shipbuilders | | Malabar | Brig | For Brown & Co. |
| Unknown date | India | J. Gilmour & Co. | Calcutta | Margaret | Brig | For private owner. |
| Unknown date | India | Hudson & Bacon. | Howrah | Maria | Merchantman | For private owner. |
| Unknown date | United Kingdom | | Whitehaven | Mariner | Merchantman | For J. Askew. |
| Unknown date | United Kingdom | Duthie | Aberdeen | Marquis of Huntley | West Indiaman | For Latham & Co. |
| Unknown date | United Kingdom | Benjamin Heward | Sunderland | Mary's | Snow | For private owner. |
| Unknown date | United Kingdom | | Sunderland | Monarch | West Indiaman | For private owner. |
| Unknown date | United States | | Philadelphia, Pennsylvania | Montezuma | Merchantman | For Snowden & North. |
| Unknown date | United Kingdom | Obadia Ayles | Topsham | Piercer | Archer-class gun-brig | For Royal Navy. |
| Unknown date | Bermuda | Goodrich & Co | Bermuda | Pike | Ballahoo-class schooner | For Royal Navy. |
| Unknown date | | Bermuda | | Pilchard | Ballahoo-class schooner | For Royal Navy. |
| Unknown date | United Kingdom | John Ball | Salcombe | Piper | Sloop | For Mr. Buckley & others. |
| Unknown date | United Kingdom | Nicholas Bools & William Good | Bridport | Pulteney | Schooner | For William Aylesbury and others. |
| Unknown date | United Kingdom | | North Shields | Ramilles | Collier | For private owner. |
| Unknown date | Spain | | | Raposa | Brig | For private owner. |
| Unknown date | United Kingdom | J. Goodchild, Jr. | Pallion | Saint Andrew, or St. Andrew | Sloop | For private owner. |
| Unknown date | Nova Scotia | | | Sir John Sherbroke | Brig | For private owner. |
| Unknown date | Russia | Vasily Vlasov | Cronstadt | Sokol | Begun-class cutter | For Imperial Russian Navy. |
| Unknown date | Russia | Vasily Vlasov | Cronstadt | Strela | Sixth rate | For Imperial Russian Navy. |
| Unknown date | United Kingdom | Nicholas Bools & William Good | Bridport | Swift | Smack | For Edinburgh Shipping Co. |
| Unknown date | United Kingdom | John Perry | Blackwall | Telegraph | Brig | For private owner. |
| Unknown date | Batavian Republic | | | Van Galen | Full-rigged ship | For Batavian Navy. |
| Unknown date | United Kingdom | Nicholas Bools & William Good | Bridport | Venus | Sloop | For Mr. Andrews. |
| Unknown date | United Kingdom | J. Taylor | Monkwearmouth | Vertumnus | Brig | For Kirkcaldy & Co. |
| Unknown date | United Kingdom | | Great Yarmouth | Windsor Castle | Brig | For Mr. Sutton. |
| Unknown date | United Kingdom | | Newcastle upon Tyne | Woodman | Coaster | For Mr. Reay. |
| Unknown date | France | | Nantes | Name unknown | Merchantman | For private owner. |
| Unknown date | United States | | New York | Name unknown | Merchantman | For private owner. |
| Unknown date | Sweden | | | Name unknown | Merchantman | For private owner. |
| Unknown date | United Kingdom | | Fowey | Name unknown | Schooner | For private owner. |
| Unknown date | France | | | Name unknown | Merchantman | For private owner. |
| Unknown date | United States | | Boston, Massachusetts | Name unknown | Merchantman | For private owner. |
| Unknown date | Spain | | | Name unknown | Merchantman | For private owner. |