Large Base only.
You can hyperspace ram in across the play area that is directly in front of and within the width of the ramming ship's base.
The ram causes Two face down damage cards to each side of an enemy ship that intersects with the width of the ramming ship's base for a minimum of 2 damage to a maximum of 8 damage. (Alternative one face up damage cards for each side of a ship hit. Still potentially maximum of 8 damage if you're really unlucky).
At the end of the attack of the ramming vessel is counted as destroyed by the opponent and is removed from the play area.
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There an effect that can destroy some ships, cripple others but is nerfed enough that it requires decent piloting, aim, and the use of an expensive ship that could accomplish more alive.
Edited by Forresto