Can You Kill An Innocent Person So YOU Can Live?

The terrible news of the Titanic submarine appearing to be lost at see with passengers aboard raises an interesting legal question--would it be lawful for some of the passengers to kill others so that their limited oxygen supply would last long, increasing the prospects for the killers to survive to rescue? An actual real-world case involving castaways at sea who killed one of their fellow survivors in order to increase their own prospects for survival occurred back in the 1880s, and was brou...