shake

A shake is an individual wooden stave that has been removed from a disassembled barrel, hogshead, or other cooperage vessel. When a wooden barrel reaches the end of its service life or must be broken down for repair or reconfiguration, the cooper knocks apart the metal hoops and separates the curved staves. Each stave, now liberated from the barrel, is called a shake. The term originated because the loosened staves literally shake free as the hoops are removed.

Shakes retain the curvature imparted by the barrel's shape and still bear the char marks, stains, or cellulose changes acquired during their years containing cargo, whether salt fish, salt beef, sugar, tar, or other trade goods. In shipyards and maritime stores, shakes were not waste; they represented potential material. A sound shake could be reused in a new hogshead, repurposed as planking for small repairs, or even sold to coopers who sorted and graded them by quality and dimension.

The practical distinction matters: a shake is specifically a stave after removal from an intact barrel, whereas a stave is the component as it exists in the barrel or as newly made by the cooper. On a ship's manifest or in a ship's stores ledger, shakes appear as salvage or raw material, often listed by the bundle or the ton. A damaged hogshead might yield six to ten good shakes from its sixteen to twenty staves, depending on the rot, splitting, or warping.

Splits and checking along the grain were common defects in shakes, especially in poorly stored piles or after long exposure to salt air. The maritime coopers developed a practiced eye for grading shakes: first quality remained straight and sound; second quality had minor surface defects; third quality might have radial or tangential cracks that would weaken the vessel but not render the wood entirely useless for patch work or filler planking. A shake with structural failure, deep cup, or significant rot was simply burned for fuel or discarded.

In the context of ship maintenance and provisioning, shakes were a measure of inventory and available repair capacity. A well-stocked shipyard kept bound bundles of sorted shakes organized by thickness and length, ready for the cooper or shipwright who needed to restore a leaking cask or build new containers. The term survives in historical shipping records and modern cooperage terminology, though the demand for wooden barrel repair has largely vanished.