The Lockheed Hudson Mk.III was a significant improvement on the earlier versions of the aircraft. One serious problem with the Hudson Mk.I was its limited defensive firepower. In an attempt to solve this problem the Mk.III was given three extra .303in machine guns, one in a retractable ventral position and two in beam positions, giving it a total of seven guns and removing a blind spot below the aircraft.
More free photos / by Flickr (Public Domain)