|p.42 of the Dropzone Commander Rulebook that is!|
As you may of guessed, Skimmers skim just above the ground and may move over Impassable and Tough terrain without penalty, as long as the terrain feature is less then ¼" high. However they do need something to propel off from, so Insubstantial Area Features, such as vegetation, that are over ¼" high count as impassable.
Skimmers are quick and agile and become tricky targets to hit while moving. Because of this, weapons shooting at a skimmer that has moved 6" or more in it's previous activation suffer a +2 to their Accuracy (Ac) rating, to a maximum of 6+. You do not count the 3" you receive from embarking/disembarking when calculating if you have moved at least 6". AA weapons do not suffer the +2 Ac penalty.
The times you cannot move the 6" required tend to be when you are embarking/disembarking. Units may only move half their Movement value (Mv) when embarking/disembarking, and most all skimmers do not have a Mv of 12" or more. This makes skimmers most vulnerable the turn after they have disembarked.
Thanks again for reading/watching. If you have any suggestions for good Dropzone Commander noodle-scratchers, please leave a comment (wherever on the web you found this, I will find the comment). I'll be back next time to cover Transports, Embarking, and Disembarking.