Engine power

 is one of several ship statistics and defines how fast the ship can go. Engines with higher  values permit faster ship speeds, but consume fuel at a faster rate as well. Your final speed are even by your ship total weight, that mean a 1000 weight ship with a 1000 engine power moves about the same as 2000 weight ship with 2000 engine power, With the additional disadvantage in which the latter ship will consume twice as much fuel.