Against the Sun (2014) online

In one of the most harrowing true stories of World War II, three US Navy airmen crash land their torpedo bomber in the South Pacific and find themselves on a tiny life raft, surrounded by open ocean. No food. No water. No hope of rescue. Against incredible odds, these three virtual strangers must survive storms, sharks, starvation - and each other - as they try to sail more than a thousand miles to safety.