- Not only did Verhoeven strip for action, he ordered cinematographer Jost Vacano to do the same.
- To capture the cramped feel of a sub's interior, he insisted that cinematographer Jost Vacano work within the narrow, damp confines of the boat's interior.
- The picturesque ruins of Wildenburg castle and of the " Koppenstein " on the northern part of the Soonwald ridge became legendary sites in the 19th century thanks to romantic ballads composed by Hunsr點k poets, Otto von Vacano and Peter Joseph Rottmann.
- Directed by Paul Verhoeven; written by Joe Eszterhas; director of photography, Jost Vacano; edited by Mark Goldblatt and Mark Helfrich; music by David A . Stewart; production designer, Allan Cameron; produced by Alan Marshall and Charles Evans; released by United Artists.
- Directed by Paul Verhoeven; written by Andrew Marlowe, based on a story by Gary Scott Thompson and Marlowe; director of photography, Jost Vacano; edited by Mark Goldblatt; music by Jerry Goldsmith; production designer, Allan Cameron; produced by Douglas Wick and Alan Marshall; released by Columbia Pictures.