Replicator cruiser

The Replicator mothership was created by the Human form Replicator Fifth and the design was later used by Replicator Carter.

Design
The ship was constructed from Replicator blocks. It had the same basic systems as other ships such as a hyperdrive and shields. It also had the ability to discharge blocks to infest other ships.

Room
There was only one room known to exist which had several different uses. Fifth used it to hold Samantha Carter when he tortured her and later tried to convince her to join him. He also created RepliCarter in this room. RepliCarter used it when she captured Daniel Jackson and probed his mind.

Fifth
Fifth used the ship to escape Halla while the planet was being pulled into a black hole. Once he captured Samantha Carter, Fifth then headed to Orilla. Thor planned to destroy the ship by self-destructing his own, however a Replicator prevented Thor from catching up with it. The Valhalla along with several other O'Neill-class ships were able to destroy it when it emerged from hyperspace.

Fifth later recreated the ship to reach the Milky Way galaxy. He was tricked by RepliCarter to approach the Alpha Site where he and the ship were destroyed.

RepliCarter
RepliCarter recreated the ship when she began her war against the Goa'uld. This is where she held Daniel Jackson and extracted the Ancients' knowledge from his mind before killing him. She and the ship were destroyed by the Dakara superweapon along with the rest of the Replicators.