I used to fly a bit with 52 squadron Andovers when I was fire officer at Seletar in 1967. Definitely one navigator on any trip I went on. As for the kneeling facility, this was used quite frequently , especially when taking kit "up country" and using strips with few facilities other than manpower. Best trip I went on was a weekend in Manila (staging through Labuan), A few people I remember were Andy Coverdale and John Austin (pilots) and Johnny Griffin (nav). I used to stand at the nav table and watch Johnny plotting and think it was a mystery how he knew where we were - four years later I was a nav myself and I still used to think it was it was a mystery!