shirgall
Cosmic Mongoose
The latest interpretation I read was that the free airlocks fall into the +/- 10% for ship deck plans.
We'll have to see if that changes in the upcoming HG review.
My house rule is that I differentiate between pressure doors for bulkheads and full on airlocks which have additional equipment for safe ingress/egress. Pressure doors and cargo doors are emergency exits ("alarm will sound") or for use in atmo/hangar bay. True airlocks have to be paid for in spreadsheet tonnage.
