© Jon Bird
planks for boatbuilding need to be twisted, as well as bent, to
fit the hull shape. Bending planks that are 1½” thick
(38mm) is difficult, so the planks were steamed in a steam chest
for an hour per inch of thickness before being fitted. Although
the steam chest is simply a plank box, it is remarkably effective.
Here Ashley fits the sheer strake (the top plank, which is the thickest).