Fish runs were well-known even in the '70s. A chap flew a Hunter up from Brawdy to collect a couple of bags of prawns, which would be stowed in the sabrinas. All went well and he was soon on his way back to Brawdy...
But at low level...
In the Summer of '76 - one of the hottest for years...
Liberating the prawns from the sabrinas, he was greeted by 2 bags of warm, pink, fishy smelling sludge!