Update for V6 compatibility:
1. the Engine Room has been redsigned and is now safe to enter and has approprate warnning signs for dangerous areas, it now also holds 25% more fuel then the previous version (12 tanks instead of 9)
2. some of the hallways needed to be slightly widened to allow 02 Flow
3. the front ramp door of the main hanger need to be redesigned due to ramps not blocking air flow, the redesign did make the door a little smaller, but on the plus side the door is stronger and there is now addtional hanger space!

I have marked the places to put ventilators with an X

Note: if you want the version before the modfications it is available here:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=896482201

Fixed workshop portrait

Minor cosmetic changes - ie texturing some blocks i had missed