The modular spacecraft 10, wherein {HEAD ~ said top coupling mechanism} coupled to said top forward adapter section comprises {TAIL ~ an active common berthing mechanism} 
comprises
The modular spacecraft 10 , wherein { HEAD ~ said top coupling mechanism } coupled to said top forward adapter section comprises { TAIL ~ an active common berthing mechanism }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL