Updated the FAQ

[douglas]

For ships with emergency propulsion when the days they move on matters:
A ship with N emergency movement points will move on each day it would at its normal speed, and will also move on the first N days that it normally wouldn't after the first normal movement day. Among other things, this means that emergency propulsion on ships with only one normal movement point is useless, as there aren't any days for the emergency moves to be taken on after the first and only normal move on day 30; emergency propulsion also cannot change the day of the first movement in a turn.