- Actor Allusion: Jordan Tate is "Miss July '89" — actress Erika Eleniak, who played her, was Playboy's Playmate of the month of July 1989 in real life.
- She was even wearing a naval-themed outfit in her centerfold.
- Completely Different Title:
- France French: "Trap on the High Sea"
- Québec French: "Battleship in Peril"
- Not Screened for Critics: At the time of its release, this was the highest grossing movie not to have been pre-screened for critics.
- Playing Against Type: Tommy Lee Jones, usually a quippy but stern lawman or soldier, clearly has a ball playing a snarky, unhinged terrorist. Also, Glenn Morshower, who would be more well-known for his Reasonable Authority Figure roles, plays an arrogant Jerkass naval officer.
- Uncredited Role: Steven Seagal did some uncredited rewrites to the script.
- Wag the Director: Steven Seagal claimed in an interview that the character played by Erika Eleniak was not included in the original screenplay and that he personally suggested the inclusion of a stripper as a sidekick to add some humor to the film.
- What Could Have Been: According to a claim made by Jenny Mccarthy during an interview, she was offered the role of Jordan Tate but declined because it would have required nudity. This was before McCarthy's days as a Playboy Playmate, when she was trying to make it as a legitimate actress.
- Working Title: Dreadnought.
Trivia / Under Siege