 As the siege of the Breton ports continued, the focus of the war was quickly shifting further east.Operation "Kinetic" had been set up by the Royal Navy Command Headquarters; the objective of which was to eliminate the German navy all along the French Atlantic ports.Of three Forces of Kinetic - Force 27 under the command of William Davis, consisting of the light cruiser HMS "Mauritius" and the destroyers HMS "Ursa" and HMCS "Iroquois", departed Plymouth on 13 August to carry out a new patrol along the central section of the Biscay coast.