toad_oftoadhall
Well-Known Member
An earlier standard was BS3595. Lifejackets to this standard were around in the 70s. Inflatable lifejackets were permitted - although I'm not clear whether this included automatic inflation as well as manually-triggered inflation.
Many thanks pvb, that's cracked it. I can't find the full text of BS3595/81 but Google suggests BS3595/81 did require foam-filling. Inflation was purely secondary. That, (if that's right) would totally support my recollection that LJ's took off for sailors when the standard changed to allow less bulky LJs.
Can you or anyone else confirm one way or the other?