Has there aver been a case of an "Emergency Water Landing" when pax pulled their life jackets out from under their seats, or under their arm rests in First and Business class, inflated their vests by pulling on the red tag or by blowing into the tube then calmly found their nearest exit and boarded a life raft????
Most likely the a/c has completely broken up, the fuel is all on fire, and there are 300 people in a panic.
Forget about trying to save the pax, if you can't swim, you won't even be able to save yourself.
LEARN TO SWIM!!!!!!!!!!!!
It's fun, and good exercise. I used to be a swimming teacher, and unless you have an abnormal phobia of water, swimming is really easy to learn. If you practice 3 times a week, you'll be a pro by the time you get that final call from the airlines. If you are from Australia, you will be an Olympic Swimmer by the time you get a call from one of our airlines...