plank-sheer

plural plank-sheers

1. businessThe course of plank laid horizontally over the timberheads of a vessel's frame.

   The principal structural item above the weather deck wa- terway was the planksheer[…]. This large plank marked the termination of the uppermost plank installed on the exterior hull.

   2013, William L. Crothers, American-Built Packets and Freighters of the 1850s

   1 more example

   The characteristics of the French model were a beautifully rounded bow, by no means sharp along the water-line, easy sectional lines developing into a full, powerful forebody and midship section, and great dead rise at half floor. The greatest breadth was well forward of amidships and at the waterline, with a slight, gracefully rounded tumble home to the plank-sheer. The after-body was finely moulded, clean, sharp, and long, with a powerful transom and quarters.

   1911, Arthur Hamilton Clark, The Clipper Ship Era 1843-1869