Cold can Kill

Was one of the very first lessons they thaught us at the nautical college. And its true, unprotected your survival time in cold water is usually not more than 15 minutes. I heard that it is a very comfortable and pleasant way of dying. But who told us that?
Anyway , to protect yourself you have to don a very uncomfortable survival suit and as icing on the cake a lifevest which is almost impossible to strap decent. See for yourself.