Overcrowded Lifeboat

I find that the captain is guilty. He basically puts himself in charge of picking whether or not someone lives. One of the reasons why I disagree with his actions is because he says the weak must be kicked off the boat. Not only are there adults but children. Obviously children aren't fully grown making most of them weak, so how is it fair to kick them off the boat? I think there could've been a better solution than killing off all those people. He was being completely selfish. He knew that if there were some people left on the boat, that people would understand his sacrifice and consider him a hero.