If you were trapped on a boat with your friends and one of them died?

there is no such thing as "no other source of food" if you are trapped on a boat, just bone idleness and stupidity, the seas are swimming with food.

Well, no. If it was a really close friend, I would rather die out of respect for them. Just because they're dead doesn't mean they don't deserve respect. Sure, it's weird. But how would you feel if you were the one who died. You're sitting on the boat with your friend (in spirit of course) and he obviously does not know you're there and then he just starts eating you! I mean, come on!

yes of course...

Not if I can get off the boat easily if parked in the local marina!

If out in the middle of the pacific, well, I'd certainly be getting the knife and forks out!!