Tranquility Base was a Federation shipyard located near the Sea of Tranquility area of Luna. Among the many Starfleet vessels to be constructed at the yards was the Constitution-class starships USS Defiant and USS Excalibur. (ST reference: Star Charts, ENT episode: "In a Mirror, Darkly", ST reference: Ships of the Line)
- The Starfleet facility is presumably an expansion of the landing site of Apollo 11.
|the moon Luna|
|cities and settlements||Aldrin City • Armstrong Center • Armstrong City • Collins Amphitheatre • Copernicus City • Luna City • Lunar One Colony • New Berlin • New Chicago • Oceanview • Tycho City|
|landmarks and institutions||Aldrin City Archives Annex • Collins Amphitheatre • Copernicus Ship Yard • Disneymoon • Goddard Moonbase • Hadley Rill Hospital • HiBeam Energies Limited • Kashishowa Station • Luna repair base • Lunar Base 3 • O'Hare Rocket Port • Tranquility Base • Tranquility Park • University of Luna|
|geography||Fra Mauro • Lake Armstrong • Laserton North • Mare Nubium • Mare Tranquillitatis • Ocean of Storms|
|bodies of water||Lake Armstrong|