·This film is the last film starring William Powell .
· Before starring in the film version of "Mr. Rob", Henry Fonda won the 1948 Tony Award for the same role he portrayed on the Broadway stage.
·When preparing to shoot the motorcycle rushing out of the dock, the stuntman refused to finish. The director John Ford found a volunteering naval soldier Jack Lewis among the crowd. Although he had never ridden a motorcycle, he still had Have the guts to try it. According to military regulations, Ford could not allow the young man to accept a payment of 700 dollars, so he walked into the nearby Hilton Hotel and told the manager that Lewis could spend a year at the bar at will, and all expenses were charged to Ford's own account. Later, Jack Lewis became a writer and publisher.
The role of Doc was originally hoped to be played by Spencer Cusser, but he refused.
·When filming the scene where Pulver told the captain that he had been on the ship for 14 years, James Cagney, who played the captain, rehearsed many times because he often laughed, but in the end he still couldn't stand up.
·The film was directed by two directors because John Ford quit midway, and the rest of the filming was done by Melvin Leroy. There are two reasons for John Ford's withdrawal. One is to give up due to illness, and the second is because Ford and Henry Fonda have a serious disagreement and even fist together.
· Marlon Brando and William Holden refused to play Rob.
·The real serial number of the cargo ship in the film is USSVirgoAKA20-AE30
Cross-cut shots: The envelopes sent by friends from Pulvo have stamps on them, but the letters sent from the battlefield do not need stamps.
