The Νaval Βattle of Navarino played a critical role in the last stages of the Hellenic Revolution. The Great Powers (France, G. Britain, Russia) had sent fleets in the Mediterranean in order to force the Sultan to accept the London Treaty (1827), whereby Greece was recognized as an independent state.  On October 20th, 1827, the British fleet, under the command of Vice-Admiral Codrington, the Russian fleet under the command of Rear-Admiral Hayden and the French fleet under the command of Rear-Admiral De Rigny utterly destroyed the unified Ottoman fleet anchored in Navarino Bay in Messinia. Human losses on the part of the Ottoman fleet were estimated at about 6.000 men, while losses of the Allied Forces amounted from 200 to 654 men, according to the source. This was the last significant naval battle that was conducted solely through sailing vessels.