{TAIL ~ at least two housings} coupled to the hull by {HEAD ~ beams} forming a hydrofoil 
{ TAIL ~ at least two housings } coupled to the hull by { HEAD ~ beams } forming a hydrofoil
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH