Rossian,
As far as I recall there was no navigation instruction on the AEOp course and our involvement with the nav in the Varsity was minimal apart from sending postion reports on VHF or CW based on his info and taking turns to distribute the rations. Apart from that the nav was often a mysterious figure sitting somewhere in the bowels of the back of the aeroplane. Actually, it was all quite good fun in spite of the old age of the aeroplanes. Next, for a couple of us ,was the Shack Mk2 /lll which was probably even older. I'd had a while down near Leatherhead and thought I'd bought enough beer for a guy from P STaff in MOD to secure an overseas posting direct from training. Dream on. His idea of overseas was Ballykelly.
Again, it was so much fun but that's a totally different story.