The Liberal fleet's victory destroyed Miguel's last significant naval force, enabling the capture of Lisbon and proving decisive in the Portuguese Liberal Wars.
Key Facts
- Date
- 5 July 1833
- Miguelite ships captured
- 4 ships of the line, 1 frigate, 1 corvette
- Liberal commander
- Charles Napier (British naval officer)
- Miguelite commander
- Manuel Marreiros (Portuguese naval officer)
- Liberal advantage
- Boarding tactics by ex-Royal Navy personnel
- Prior Miguelite naval loss
- Battle of the Tagus, 11 July 1831
By the Numbers
Location
Cause → Event → Consequence
During the Portuguese Liberal Wars, a civil conflict between King Dom Pedro and the pretender Dom Miguel, Miguelite naval forces retained control of key sea lanes. After losing ships at the Battle of the Tagus in 1831, Miguel's fleet at Cape St. Vincent represented his last significant naval strength, making control of the sea around Lisbon strategically vital for both sides.
On 5 July 1833, a Liberal fleet commanded by Charles Napier engaged a numerically superior Miguelite fleet under Manuel Marreiros off Cape St. Vincent. Outnumbered and lacking ships of the line, Napier ordered his squadron to close directly with the enemy and board their vessels. His crews, largely composed of former Royal Navy personnel, overwhelmed the Miguelite sailors in hand-to-hand combat, capturing four ships of the line, a frigate, and a corvette.
The battle eliminated the last meaningful Miguelite naval force. With no ships capable of resupplying Lisbon by sea, the Miguelite-held capital quickly capitulated, shifting the balance of the Liberal Wars decisively in favor of Dom Pedro and the Liberal cause.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Charles Napier.
Side B
1 belligerent
Manuel Marreiros.