Did a Navigators course largely in Varsitys in 1952-53. including two overseas trips. Got my brevet in August 1953. The Varsitys were fairly new then, surprise they lasted this long. They often did two 4.5 hour sorties per day. Must have clocked up the hours quickly. I think being in the bomb aimers bay for landing was banned. Gee was used extensively, and gee was accurate enough to line up with the runway. In ground school were were given gee signals as they looked when jammed by the Germans.