RA1 Gameicon.png CS Gameicon.png AF Gameicon.png
RA1 Submarine Pen Icons.png

The Submarine pen is the USSR's ship construction facility during the Second World War.


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.

Units produced

Icon Unit Requirements Ability
RA1 Transport Icons.gif Transport none

Transport 5 ground units

RA1 Submarine Icons.gif Submarine none
  • Cloak when not attack
  • Detects submarines
RA1 AF Missile Submarine Icons.gif Missile submarine

Cloak when not attack


See also


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

Soviet power supreme! Soviet Second World War Arsenal Soviet power supreme!
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