I was sitting next to an Army captain in a Herc as we crossed the French coast heading for Lyneham when the Nav announced over the intercom that our position was west of the Cherbourg Peninsular. Looking out of the window and cross checking with his Letts pocket diary map, the Captain became rather concerned that this was inaccurate and that we were actually east of the peninsular rather nearer Le Havre than Cherbourg. I suggested that he inform the loady who invited him up to the flight deck where a short conversation with the Nav which revealed that he was indeed right and it would seem that his trusty Letts pocket diary map was more accurate than the Herc’s nav aids. (I think the Nav was navigating between beacons and was being a bit lazy and had not bothered to look out the window)