Spaceships hull armor…solid?

[weby]

The spaceships system is one that calculates mass not volume.

There are a total of 20 systems.
6 front, 6 center, 6 rear and 2 core systems

If you put in armor that takes one of the 20 slots as armor has significant mass thus each such mass unit takes one of the mass slots and provides the armor value given in the table into that section.