We disscussed this in a thread about three months ago, and I mantioned my pal who put down a B206 into the salty stuff between EGNH and the IOM,
to quote the man
" I just had enough time to get out of the already unlatched door, after splashdown by undoing the belt at that moment, I then kicked away from the heli which was turning over and showing its skids"
So time is definatly " Tempus Fugit" possibly time to relate on your insurance policy