The formula for calculating the speed is broken into seveal smaller parts in order to reach the final speed. I've included a summary, a more detailed broken down explanation with examples and a few charts I have prepared which you can feel free to check. Fighters fall udner the same formula, the only difference being that they have a fixed propulsion of 8 (no, their speed is not fixed) and cannot be augmented by engines or overdrives. If you want proof of that, check the speed of all the fighters. All of them except the Wasp have a speed of 8 (when your navigation skill is '0'), whereas the wasp has a speed of 7 due to its heavy hull. Keep in mind that fighters' speed improves as your navigation skill increases (see Ship Speed Formula). Note, that the MINIMUM speed of any ship despite its weight and engines cannot go below 2 and the MAXIMUM speed cannot go above 16. The chart at the very bottom includes only a mere fraction of the whole chart needed to map all the possible speeds and it is there simply for illustrative purposes; otherwise it would have been too big.
Ship Speed Formula Summary:
Further breakdown with working example:
Propulsion = 1 + (The sum of all Drive Engines on the Ship x 2 (overdrive/SMs))
(doubled if there is a Strange Module or an Overdrive onboard)
Note: having more than one Overdrive or SMs on the same ship has no cummulative effect!
Example: 2 Jet Engines on a single ship produce a total of (1 + (4 + 4) =) 9 Propulsion
Total Weight = Ship's Hull Weight + Equipment Weight
Example: A Falcon equiped with:
| Weight (x1000) |
Propulsion 4 |
Propulsion 8 |
Propulsion 12 |
Propulsion 16 |
Propulsion 20 |
Propulsion 24 |
|---|---|---|---|---|---|---|
| 0 <= W < 2.5 | 5 | 9 | 13 | 16 | 16 | 16 |
| 2.5 <= W < 5.0 | 4 | 8 | 12 | 16 | 16 | 16 |
| 5 <= W < 7.5 | 3 | 7 | 11 | 15 | 16 | 16 |
| 7.5 <= W < 10 | 2 | 6 | 10 | 14 | 16 | 16 |
| 10 <= W < 12.5 | 2 | 5 | 9 | 13 | 16 | 16 |
| 12.5 <= W < 15 | 2 | 4 | 8 | 12 | 16 | 16 |
| 15 <= W < 17.5 | 2 | 3 | 7 | 11 | 15 | 16 |
| 17.5 <= W < 20 | 2 | 2 | 6 | 10 | 14 | 16 |
| 20 <= W < 22.5 | 2 | 2 | 5 | 9 | 13 | 16 |
| 22.5 <= W < 25 | 2 | 2 | 4 | 8 | 12 | 16 |
| 25 <= W < 27.5 | 2 | 2 | 3 | 7 | 11 | 15 |
| 27.5 <= W < 30 | 2 | 2 | 2 | 6 | 10 | 14 |
| 30 <= W < 32.5 | 2 | 2 | 2 | 5 | 9 | 13 |
| 32.5 <= W < 35 | 2 | 2 | 2 | 4 | 8 | 12 |
| 35 <= W < 37.5 | 2 | 2 | 2 | 3 | 7 | 11 |
| 37.5 <= W < 40 | 2 | 2 | 2 | 2 | 6 | 10 |
| 40 <= W < 42.5 | 2 | 2 | 2 | 2 | 5 | 9 |
| 42.5 <= W < 45 | 2 | 2 | 2 | 2 | 4 | 8 |
| 45 <= W < 47.5 | 2 | 2 | 2 | 2 | 3 | 7 |
| 47.5 <= W < 50 | 2 | 2 | 2 | 2 | 2 | 6 |
| 50 <= W < 52.5 | 2 | 2 | 2 | 2 | 2 | 5 |
| 52.5 <= W < 55 | 2 | 2 | 2 | 2 | 2 | 4 |
| 55 <= W < 57.5 | 2 | 2 | 2 | 2 | 2 | 3 |
| 57.5 <= W < 60 | 2 | 2 | 2 | 2 | 2 | 2 |