J0737

Proposal for a chain shackle attachment Long Caption: Scale: 1:12. Plan showing a section through an Orlop Deck beam end with a proposal for passing a chain and shackle round the beam for attaching the Hempen cable, instead of the common clench. Signed by Richard Blake [Master Shipwright, Portsmouth Dockyard, 1835-1844]. A clench is where a bolt or shackle has its bolt hammered over so it cannot be removed, thus closing the shackle permanently. Credit line: © National Maritime Museum, Greenwich, London Object: ZAZ6891 Artist: George Atkins Date: 13 April 1836 Medium: technical drawing Size: 188 mm x 305 mm Click here to buy a bespoke print of this image.