| Aguadilla | Danmark-Norge | Puerto Rico | San Juan | deep | 18:00–21:00 UTC | 10,600 | 40 | 10% | 250 | −40% | — |
| Ahumada | France | Gulf | La Bahía | shallow | 19:00–22:00 UTC | 900 | 30 | 5% | — | −40% | +25% |
| Alabaster Rocks | United States | Bahamas | Nassau | shallow | 03:00–06:00 UTC | 900 | 30 | 10% | 2 | — | — |
| Alacranes | Great Britain | Yucatan | Arenas | shallow | 11:00–08:00 UTC | 900 | 30 | 10% | 4,424 | −40% | +50% |
| All Saints | United States | Atlantic Coast | Charleston | deep | not capturable | — | 30 | 10% | — | — | — |
| Almeria | Russian Empire | Gulf | Vera Cruz | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | 124,265 | — | — |
| Almirante | Neutral | Central America | Matina | deep | 01:00–04:00 UTC | 5,700 | 30 | 10% | — | — | — |
| Alvarado | Russian Empire | Gulf | Vera Cruz | deep | 11:00–08:00 UTC | 10,600 | 40 | 10% | 750 | −40% | — |
| Amalienborg | Danmark-Norge | Upper Antilles | Spanish Town | deep | 18:00–21:00 UTC | 10,600 | 40 | 10% | — | — | — |
| Ambergrease Cay | Great Britain | Central America | Belize | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | 1 | — | — |
| Apalachicola | Neutral | Gulf | San Marcos | deep | 16:00–19:00 UTC | 5,700 | 30 | 10% | — | — | — |
| Aransas | France | Gulf | La Bahía | deep | 18:00–21:00 UTC | 5,700 | 30 | 10% | — | −40% | +25% |
| Arcas | Russian Empire | Yucatan | Arenas | shallow | 11:00–08:00 UTC | 900 | 30 | 10% | 10,415 | — | — |
| Arecibo | Danmark-Norge | Puerto Rico | San Juan | deep | 11:00–08:00 UTC | 10,600 | 40 | 10% | — | −40% | — |
| Arenas | Russian Empire | Yucatan | Arenas | shallow | 16:00–19:00 UTC | 900 | 30 | 10% | 661,621 | — | — |
| Arthur's Town | Sverige | Bahamas | George's Town | shallow | 00:00–03:00 UTC | 900 | 30 | 10% | — | — | — |
| Asunción | Great Britain | Yucatan | Salamanca | shallow | 11:00–08:00 UTC | 900 | 30 | 10% | — | −40% | — |
| Atchafalaya | United States | Gulf | Nouvelle-Orléans | deep | 11:00–08:00 UTC | 5,700 | 30 | 1% | — | — | — |
| Atwoods | Sverige | Bahamas | Pitt's Town | deep | 00:00–03:00 UTC | 5,700 | 30 | 10% | 4 | — | — |
| Aves | Free Town | Central Antilles | deep | not capturable | — | 30 | 10% | — | — | — | |
| Ayamonte | United States | Atlantic Coast | San Agustín | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | — | −40% | — |
| Ays | United States | Atlantic Coast | Ays | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | 697,855 | −40% | +50% |
| Azua | Verenigde Provinciën | Hispaniola | Santo Domingo | deep | 11:00–08:00 UTC | 10,600 | 40 | 10% | — | — | — |
| Bahía Escocesa | Danmark-Norge | Hispaniola | Puerto Plata | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | — | — | — |
| Bahía Honda | España | West Cuba | La Habana | deep | not capturable | — | 40 | 10% | — | — | — |
| Baja | España | West Cuba | La Habana | deep | not capturable | — | 30 | 10% | — | — | — |
| Baní | Verenigde Provinciën | Hispaniola | Santo Domingo | deep | 11:00–08:00 UTC | 10,600 | 40 | 10% | 405 | — | — |
| Baracoaregional | Pirates | East Cuba | Baracoa | deep | 02:00–05:00 UTC | 20,000 | 50 | 10% | 2,444,910 | −40% | +50% |
| Barahona | Verenigde Provinciën | Hispaniola | Santo Domingo | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | — | — | — |
| Barataria | United States | Gulf | Nouvelle-Orléans | deep | 11:00–08:00 UTC | 5,700 | 30 | 1% | 8,433 | −40% | +50% |
| Barcosprotected | España | West Cuba | Santa Fe | shallow | 11:00–08:00 UTC | 900 | 30 | 10% | — | — | — |
| Barranquilla | Neutral | South America | Santa Marta | deep | 16:00–19:00 UTC | 5,700 | 30 | 10% | — | — | — |
| Basse-Terreregional | Sverige | Central Antilles | Basse-Terre | deep | 01:00–04:00 UTC | 20,000 | 50 | 10% | 903,236 | — | +50% |
| Basseterre Town | Sverige | Upper Antilles | Saint John's | deep | 11:00–08:00 UTC | 10,600 | 40 | 10% | — | — | — |
| Batabanó | España | West Cuba | Pinar del Río | deep | 11:00–08:00 UTC | 20,000 | 50 | 10% | 530 | — | — |
| Baxo Nuevo | Russian Empire | Yucatan | Arenas | shallow | 11:00–08:00 UTC | 900 | 30 | 10% | 20 | — | — |
| Beaufort | United States | Atlantic Coast | Charleston | deep | not capturable | — | 40 | 10% | — | — | — |
| Belize | Great Britain | Central America | Belize | deep | 11:00–08:00 UTC | 20,000 | 50 | 10% | 2,998,512 | — | — |
| Bensalem | Great Britain | Central America | Belize | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | — | −40% | — |
| Bernal | Russian Empire | Gulf | Vera Cruz | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | 2 | −40% | — |
| Biloxi | United States | Gulf | Penzacola | deep | 11:00–08:00 UTC | 10,600 | 40 | 1% | — | −40% | — |
| Bimini | United States | Bahamas | Morgan's Bluff | shallow | 11:00–08:00 UTC | 900 | 30 | 10% | — | — | — |
| Black River | Great Britain | Central America | Black River | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | 405,453 | — | — |
| Blondel Cay | Neutral | Bahamas | Grand Turk | shallow | 19:00–22:00 UTC | 900 | 30 | 10% | — | — | — |
| Bluefields | Sverige | Central America | Bluefields | deep | 01:00–04:00 UTC | 20,000 | 50 | 10% | 1,381,076 | −40% | +50% |
| Bonacca | Great Britain | Central America | Black River | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | — | — | — |
| Bone Cay | Great Britain | Jamaica | Pedro Cay | shallow | 11:00–08:00 UTC | 900 | 30 | 10% | — | — | — |
| Brangman's Bluff | Kingdom of Prussia | Central America | Brangman's Bluff | deep | 11:00–08:00 UTC | 5,700 | 30 | 10% | 415,765 | — | +50% |
| Brewers | Great Britain | Central America | Black River | shallow | 19:00–22:00 UTC | 900 | 30 | 10% | — | — | — |
| Bridgetown | France | Lower Antilles | Bridgetown | deep | 11:00–08:00 UTC | 20,000 | 55 | 10% | 5,728,579 | −40% | +50% |