This summer brought the fourth film in the popular Sharknado franchise to the small screen, but for those seeking a more realistic shark-attack story, then USS Indianapolis: Men of Courage might be right up your alley. A new trailer has debuted for this adaptation of an incredible true story, which doesn't have a U.S. release date quite yet, although it did open in the Philippines last month. This new movie sheds some light on a little-known story from the very end of World War II.

USS Indianapolis: Men of Courtge tells the harrowing true story of the crew of the USS Indianapolis, who were stranded in the Philippine Sea for five days after delivering the atomic weapons that would eventually end WWII. The U.S.S. Indianapolis was sunk by Japanese torpedoes in 1945, and of the over 900 crew members on board, only 300 survived the ordeal, battling starvation, hypothermia and some of the most dangerous shark attacks in history. The ship's captain, Charles McVay was court-martialed over the ship's secret mission to deliver the Hiroshima bomb. The new trailer surfaced on YouTube earlier today.

It's worth noting that this won't be the only movie to tackle this story. Robert Downey Jr. has been developing his own movie based on this story since 2011, and last year we reported that Tate Taylor (The Help) has come aboard to direct, with this true story centering on an 11-year-old boy named Hunter Scott, who has a school project based on the incident. The boy begins digging into the truth surrounding the sinking, and learns that McVay is actually a hero. Thanks to the youngster's efforts, the Captain was exonerated decades after the ordeal, and his records were amended in 2001.

Nicolas Cage stars as Captain McVay, with Tom Sizemore and Thomas Jane also starring. The supporting cast for USS Indianapolis: Men of Courage includes Matt Lanter, Weronika Rosati, Cody Walker, Brian Presley, Emily Tennant, Callard Harris and Emily Marie Palmer. Mario Van Peebles directed this movie from a script by Cam Cannon and Ricardo Rionda Del Castro.

If this story already sounds familiar to you, it may be because it was told briefly by Robert Shaw's character Sam Quint in Steven Spielberg's 1975 classic Jaws. As for Robert Downey Jr.'s USS Indianapolis movie, we're not quite sure when production will begin on that project. Take a look at the first trailer for USS Indianapolis: Men of Courage, and stay tuned for details on its release date.