Diameters of the first and the second tapered tunnel sections corresponding to a diameter of {TAIL ~ the propeller section} at the propeller section and taper outward toward {HEAD ~ a larger diameter} at each of the corresponding tunnel openings through the hull of the vessel 
Diameters of the first and the second tapered tunnel sections corresponding to a diameter of { TAIL ~ the propeller section } at the propeller section and taper outward toward { HEAD ~ a larger diameter } at each of the corresponding tunnel openings through the hull of the vessel
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH