sentences:  618 Squadron RAF on 7 November 1943; this aircraft, piloted by Flying Officer A.J.L.Bonnett of the Royal Canadian Air Force, was armed with a 6-pounder (57mm) Molins gun and this was the first attack on a U-boat with one of these weapons.Bonnett fired eight rounds at the U-123 and achieved several hits on the submarine's conning tower and hull.