MAPMAKERS TECHNOLOGY REFERENCE
Delta IV-Class SSBN
A Soviet and Russian nuclear-powered ballistic-missile submarine class designed for strategic deterrence patrols and submarine-launched ballistic missiles.
Ballistic-missile submarine class · Real-world system · Entered service in 1984

Technical basis
Double-hull construction, nuclear propulsion, sixteen submarine-launched ballistic-missile tubes, long submerged endurance, inertial navigation, acoustic quieting, and strategic command-and-control systems.
Mapmakers configuration
The specific submarine transferred into international custody is fictional, but its class characteristics and strategic role are grounded in the real Project 667BDRM design.
Series appearances
- The Divided Peninsula — Chapters Five, Six, and Twenty-Six
