Is spaceship armor useless?

[ericbsmith]

Originally Posted by Anthony

Spaceship armor is a bit screwed up due to the assumptions used in Spaceships. I believe there's rules in one of the later books for modifying DR for ships with lots of armor (as they have lower volume and thus surface area than the default rules assume).

The Armor/Volume rule is from Pyramid 3-34 along with several other rules tweaks for Spaceships.

Essentially you get a multiplier to dDR because a ship with a large percentage of it's mass in Armor is going to have a reduced volume because of Armor's high density, and a smaller volume ship has less surface area which will increase the Armor's thickness and thus it's dDR.