Lifeboat ethics - Real Lifeboats!

[billy]

So the ship has gone down, and there you are in the stormy sea in a lifeboat, with more passengers aboard than the safe limit for the boat, and more are out in the water clinging to the boat, trying to pull themselves in, and on the verge of capsizing it, and you can't swim.

When do you grab an oar and start hitting people in the water to keep them from capsizing the boat?

Illegal? No. You have the right to save your life, even it means killing another. This is recognized in both domestic and international law.

Immoral? Unclear.
so what are your thoughts;