Here's some Sluis Van info I found on the web:
This was the primary planet in the Sluis sector. The native Sluissi lived in habitation spheres that were placed at or near the surface of the planet, allowing them the abiity to access the planet's resources. There was also a large shipyard controlled by the Sluissi, in a stationary orbit around Sluis Van. The shipyard was a long, multi-segmented station with a wide central tunnel. Each of sixteen modules contained starship repair facilities, along with living accommodations and shops. The Sluis system occupies a major spot along active space lanes, and its extensive deep space shipyard facilities are the best and largest in the area, and are made up of dozens upon dozens of orbital docks. Shuttles constantly travel from the docks to Sluis Van and back again, ferrying spacers throughout the shipyards and to the planet they orbit. Huge armored defense platforms protect the shipyards from pirate raids and smugglers.