a hyperdrive is the "engine" they use in the star wars universe to travel from one system to another. a sublight drive is the "engine" they use to travel in system. in ESB, the reason han solo couldn't escape from the the imperials after the battle of hoth was because his hyperdrive was broken, he had to use his sublight drives to reach cloud city.
a hyperdrive multiplier of X4 is rather slow, the galactic standard is X2. the standard imperial navy multiplier is X1, the Millenium falcon has a multiplier of X.5. distance between systems is measured in hours of travel in hyperspace. so the distance of planet A to planet B is 100 hours. it would take the death star 400 hours, a vessel with a standard hyperdrive engine 200 hours, an imperial naval vessel 100 hours, and han solo 50 hours.
sort of the same with the sublight drive, 2D is kind of slow, i think a tie interceptor has a speed of something like 6D, can't remember right now. but the higher the number, the greater the speed.
Originally posted by Lord-Sidious1
The Death Star I (DS-1) has two sub-light Sepma engines and has a hyperdrive rating of 4.0. It also had 123 SSPO6 hyperdrive engines to thrust it through space. These engines also accurately angled the Death Star in position for attacks.
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