IF anyone wonders why:
The First R.A.N. Sea Venom Aircraft Ejection; Brian Dutch CMDR.(P). R.A.N. (Retd.) April 2017
“...In 1960 the Tactical thinking was that, to avoid giving away the position of the Aircraft carrier to enemy radar we flew the day circuit for landing at 200 feet above sea level. At night the circuit was flown at 400 feet. It was also normal practice at the airfield to fly the circuits at similar heights above the airfield datum height.... ...It is of particular note that by the time I got back from my Survivors Leave the circuit height had been raised to 1000 feet above ground level and trees were being cleared around the airfield!!...”
https://www.faaaa.asn.au/wp-content/...No-2-Jun17.pdf
Sandy's account (there are several of both aircrew accounts in various RAN FAA publications):
https://www.faaaa.asn.au/wp-content/...-2-May02-1.pdf