GURPS Spaceships Design Spreadsheet

[Stripe]

Loving the spreadsheet. Such hard work and effort for the benefit of the community is highly commendable. This thing is an awesome effort. Many thanks!

A couple quick questions . . .

Small-system weapon batteries -- don't they just use one lower SM? I selected a small-system secondary battery for an SM+14 ship and it said I had only 3 weapon mounts at SM+14 instead of 10 at SM+13. Unless I'm doing something wrong or reading the rules wrong, both of which are very possible! I'd rather have 10 at SM+13 if that's possible, RAW.

Nuclear dampers -- which are a variant of force screens -- I'm not sure I'm clear on their radius. SS7 talks about the smaller systems force screens being "very inefficient." I'm not sure if force screens are one SM smaller and bestow only 1/3 of the dDR or just be one SM smaller. Just making sure.

Thanks a lot!