I didn't care for the movie.
Acting was stiff and the activities undertaken for rescue left me frustrated.
Spent the first twenty minutes talking out loud (which I rarely do for a movie) questioning this and that . . as it was a rental and I was watching it from home, the only one I was disturbing was my significant other . . .
The lay-up of the glass repair should have had a great deal more "backing" for strength (a couple of wood strips? - rip a wood door off a cabinet or a ply hatch cover under a cushion for pete's sake. . . where the safety gear was stored . . . no EPRIB . . . his flares seemed to be for coastal and not oceanic signaling. As well as how many were available . . . survivors that I've read about mention the difficulty being seen during daylight by passing ships and the ensuing debate as to when to sleep (sleep during day, awake at night for better possibility of flares being seen at night). His "SOS" hailing (seriously?).... About the only thing I thought ingenious by the time he was where he was emotionally was the ending. I won't comment on the specifics as as not to ruin the ending for anyone not having seen the picture (recomment saving your money however).
It was this movie or Captain Phillips Saturday night. I've since spoken to folks who have seen both movies and far and away they all say the hostage movie was much better. Coincidentially, Hanks did a better job with his role in Cast Away. You bought in to his character and the desperation, etc. of being in that situation (alone, marooned) IMO.
BTW, have never seen any containers floating by, but I've seen "lots" of "bales". . .