British reconnaissance aircraft located "Tirpitz" during the afternoon of 18 October. The first aircraft to arrive over the area was a de Havilland Mosquito from No. 540 Squadron RAF operating out of RAF Dyce in Scotland. The Mosquito's crew took photographs of the battleship from a high altitude, and returned to base despite damage by anti-aircraft guns. Shortly afterwards "Implacable"s Fairey Firefly aircraft reconnoitred the Tromsø area, several taking low-altitude photographs of "Tirpitz" off Håkøya; these aircraft were also fired on by the German anti-aircraft guns but none were damaged. During the evening of 18 October, "Implacable"s commander sought permission to attack "Tirpitz" the next day, but this was refused by the commander of the Home Fleet, Admiral Bruce Fraser, on the grounds that the carrier had sailed without any of the Supermarine Seafire aircraft needed to suppress the anti-aircraft guns. Fraser was also aware from the attacks on "Tirpitz" at Kaafjord that the carrier's two squadrons of Fairey Barracuda dive bombers would probably not be able to inflict significant damage, and that further raids by RAF heavy bombers were required.