The Terran Republic Navy is from the Milky Way Galaxy, from which the original human colonists of the War Hazard galaxy migrated after losing WWIII. The TRN's starships can achieve speeds of .8 light speed on conventional engines and use a dimensional shift drive for interstellar travel. However, targeting systems will only compensate for the relativistic effects at combined engagement speeds of up to .8 light, limiting effective velocity to .4 light.