West Shipyard

http://www.phillyarchaeology.org/reports/hertz.htm

http://www.phillyarchaeology.org/reports/pdf/HertzLot.pdf

(Fig.82) Illustration of the Clairbois (style) Slip - (Honor Sebastien Vial Du Clairbois, French, 1733-1816 – Treatise on Naval Architecture)