To protect British interests, a naval squadron under Commander William Glascock in HMS Orestes was stationed in the Douro, where it came under fire from both sides.
HMS Beagle | HMS Victory | HMS M31 | HMS Bounty | HMS M23 | HMS ''Humber'' | HMS ''Bounty'' | Orestes | HMS M27 | HMS M25 | HMS Investigator | HMS M33 | HMS ''Beagle'' | HMS Plumper (1848) | HMS Endeavour | HMS ''Victory'' | HMS Royal Charles | HMS Queen Mary | HMS ''Plumper'' | HMS Britannia | Orestes (mythology) | HMS ''Investigator'' | HMS ''Express'' | HMS Duke of Wellington | HMS ''Britannia'' | HMS Ark Royal | Yangtse Incident: The Story of HMS Amethyst | Orestes Quércia | HMS ''Winchelsea'' | HMS Volage |