The photo above shows a 15' Duck Trap Wherry setup. With this supplimental plan you will be able to reduce the mould spacing by half. Why would you want to do that? This supplimental body plan has been drawn for those wishing to strip build or cold mould their Duck Trap Wherry. With half the station spacing of the body plan on the loftings, this enables the builder to use lighter planking material without the fear of developing flat spots in the hull between the moulds. Yes, you could get the information to draw your own right from the lofting, or you could spare yourself the time and effort and simply order this one.