デ・ハビランド モスキート
"U-285"s first patrol proper began with her departure from Flekkefjord on 5 July 1944. On the 18th, she was attacked by a Norwegian De Havilland Mosquito of No. 333 Squadron RAF. One man was killed, seven others were wounded. The boat was also damaged, but docked at Kristiansand the same day.