Discovery mod is a full-scale expansion pack for Freelancer focused on continuing the story started in the vanilla campaign. The mod is used by some of the busiest multiplayer Freelancer servers and has multiplayer features including player owned (and built) bases, jumpdrives, cloaking devices and equipment manufacturing.
Doe Industries Space Port is a core 3 player owned station (PoB) from the Discovery Freelancer RP 24/7 server. It was constructed by Deep Space Engineering as a trade centre and factory. It is in the New York system, outside Planet Pittsburgh.