On the night of 8/9 June, the four ships of the 8th Flotilla set out from Brest for Cherbourg, but were intercepted by eight Allied destroyers of the 10th Destroyer Flotilla in the Battle of Ushant. The German ships had been spotted first and the British opened fire, with the Germans responding with a four-torpedo salvo from each destroyer that missed when the Allied ships turned to evade them; "T24", the trailing ship in the formation, did not fire because she had no visible targets. The British fire was extremely effective, with , immediately ahead of the torpedo boat, badly damaged only moments after firing her first salvo. The range was so close that both sides engaged with their or 3.7 cm anti-aircraft guns which appreciably added to the damaged suffered by "Z24". The Allied ships hit the German destroyer five times before she was able to lay smoke and disengage, followed by "T24". "Haida" and "Huron" pursued the pair until they passed over a British minefield and lost track of the German ships after the Canadian ships were forced to detour around it. After "Haida" and "Huron" broke off their pursuit, "Z24" and "T24" reversed course after hearing from the flotilla commander until they could see star shells bursting on the horizon and then "Z24"s captain received permission to return to Brest.