David,thats where I saw it.
I had that safety leaflet,in fact I had them all before we moved a few months ago,just need to find them again!
Guppy that is a brilliant post,I sail a lot so know the unrelenting power of the sea.
I fly an L4 Cub so getting the top window and door open should be OK,there are so many holes in the L4 I'm sure pressure would equalise rapidly.
A self inflating lifejacket is the minimum requirement for any hope of survival in busy summer inshore waters around the UK,an immersion suit or liferaft is essential for anything more than immediate rescue.
Thanks again.
Lister