When the submarine uses a tennis racket to bat away some missiles launched from the navy, the admiral exclaims "Holy Navratilova!" This is a reference to women's tennis great, Martina Navratilova, who would have been at the height of her career when the episode was produced.
Part of a movie-length, four-episode storyline. As with The Treasure of the Golden Suns movie-length event that launched the series, principal antagonists include both Flintheart Glomgold and the Beagle Boys.
A rare appearance of Uncle Donald.
Part of the action for the episode takes place near and in the Marinara Trench, a clear reference to the Mariana Trench, the deepest trench on Earth.