Construction support station 173 was a Federation space station, a construction support station in Starfleet service in the 24th and 25th centuries.

Service historyEdit

In the year 2383, the station was assembled in the Bajor system by the Starfleet Corps of Engineers from modular components within a drydock frame by tractor beams, workbees and Sphinx workpods. It served as a staging platform for the SCE's construction of the new Frontier-class Deep Space 9 (II). (ST - Typhon Pact novel: Raise the Dawn)

By 2410, construction support station 173 had been relocated to Earth's orbit, and formed the central station of the San Francisco Fleet Yards. (STO - "Season 13.5" mission: "Welcome to Earth Spacedock")



Construction support stations
UFP seal Construction support station 173San Francisco Fleet YardsSpace Station Battle Group 4Starbase 29Utopia Planitia Fleet Yards Starfleet Command logo
Bajor system
orbital landmarks (planets, planetoids, moons & asteroids): B'hava'el (primary) • Bajor IBajor IIBajor IIIBajor IVBajor VBajor VI • VII. Bajor (Baraddo/The ProdigalDernaEndallaJeraddoOstratusPenraddo) • Cajara (Empok Nor) • Denorios Belt (Bajoran wormholeConstruction support station 173Deep Space 9Deep Space 9 (II)) • VIII. Andros (2 moons) • Bajor IXBajor X • XI. Ba'Syladon (Syladdo3 other moons) • Bajor XIIBajor XIIIBajor XIVTiljara (Comet Alpha) UFP seal
Federation starbases
Starbases 1234567891011121314151617181920212223242525-Alpha26272829303132333435363739-Sierra404142434445464747-Vanguard4849505152535556585961626364656667686971727374757780818283848586878889909192939697991021031041051061081121131141171181211221231271291331341371521531571621721731741761781791801821851891932002012092102112122142152182192202232272312342352362372472522572602612622632682772953013033073103113123133143153243253263273283363433443473573713753834014104114124134144164194204224344404524734954995055145155215235245285415856126216236937147188048238344077Battle Group 1Battle Group 2Battle Group 3Battle Group 4Battle Group 5Battle Group 6Battle Group 7Battle Group 8BravoCopernicusDiamandis 1EarhartFleet Setup StationG-6HelaspontIcarusIndiaIridaniLeonovMagellanMI-17MidwayMontgomeryNeil Armstrong UFP seal

Starfleet Command logo
Kelvin timeline Yorktown Station
Deep Space Stations 123456789 (I)9 (II)10C-15E-5G-6K-2K-5K-7K-8K-10K-11K-12K-13K-22KR-1KR-3M-20M-33R-5Portal 1
Kelvin Timeline K-5K-11


The "173" designation is readable on the top dome of the station when approaching the San Francisco Fleet Yard at Earth in Star Trek Online.