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