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The submarine pen is the Soviet ship construction facility during the Second World War.


The Sub pen builds and launches Submarines and Transports. Damaged Submarines and Transports docked in the Sub Pen are repaired.
- Red Alert manual(src)

The sub pen is a solid building, composed of a concrete, tetragonal triangle shaped dome built on eight supports embedded in the seabed with shipmaking facilities located underneath. Usually, they also hold data about the locations of all subs in active duty in the surrounding area, making them high priority targets for spies in operations that involve naval engagements. Should a spy infiltrate the building, the data can be accessed and a single sonar pulse discharged.

With the expanding of Soviet navy force during Third World War, it was phased out and replaced by the new Naval shipyard. During the Psychic Dominator Disaster, Yuri adopted its design into his own submarine pen.

Game building[]

The pen allows for standard submarines and their missile variants to be constructed as well as hover transports. It is also used to repair them.



  • A fake Sub Pen exists in the game files, but is unused in-game.


DOS English French German
RA DOS SubPen icon CNCRA1 Sub Pen Cameo RA SubPen FR cameo RA SubPen DE cameo

See also[]

RAR Soviets Logo Soviet Second World War Arsenal RAR Soviets Logo