After Selim 's rejection Agree_or_refuse_to_act of the ultimatum , a British squadron , commanded Control by Vice-admiral Sir John Thomas Duckworth , entered Arriving the Dardanelles on 19 February 1807 and the British destroyed Destroying the Ottoman naval force in the Sea of Marmara , and anchored Connect opposite Constantinople .

The British warships were cannonaded and Duckworth was forced to sail Self_motion back to the Mediterranean on 3 March 1807 .

In addition , four Russian ships-of-the-line under Admiral Dmitry Senyavin were sent Sending to support Supporting the British , but did not join Becoming_a_member Duckworth until after the exit Departing from Dardanelles was made Manufacturing .

Admiral Duckworth , who commanded Control the British , was under orders Request to bombard Attack Constantinople and seize Conquering the Turkish battle fleet .

These squadrons were joined Participation by a third under Rear-Admiral Sir John Thomas Duckworth , who had deserted Escaping his station off Cadiz when he learned Education_teaching news of a French squadron to his south and subsequently crossed Motion_directional the Atlantic in pursuit of Willaumez .