Workshop House carpenters and joiners were responsible for the fittings and furnishings of warships, and also for building and maintaining various structures within the dockyard itself. The small courtyard to the west contained workshops. Masthouses and Mouldloft 1753–1755. Grade I listed since August 1999. These were used to make and store masts. Here there are seven interlinking masthouses; they were originally connected to the adjacent South Mast Pond by a wide slipway. Above them is the mould loft where the lines of were laid down: the lines of each frame of a ship would be taken from the plan and scribed, full size, into the floor by shipwrights; from this, patterns or moulds would be built using softwoods, and from these the actual frames would be built and shaped. This building houses the "Wooden Walls Exhibition". Timber Seasoning Sheds 1774. These were built to a standard design with bays . These are the first standardised industrial buildings. There were 75 bays erected at Chatham Dockyard, to hold three years worth of timber. Wheelwrights' shop circa 1780. This three bay building was originally built as a mast house using timber "reclaimed" from dismantled ships. The east bay was used by the wheelwrights, who constructed and repaired the wheels on the dockyard carts, and may have made ships' wheels. The middle bay was used by the pumpmakers and the coak and treenail makers. Pumps were simple affairs, made of wood with iron and leather fittings. Coaks were the bearings in pulley blocks, and treenails were the long oak pins, made on a lathe (or 'moot'), that were used to pin the planking to the frames. The west bay was used by the capstan makers, capstans were used to raise the anchor. Since 2017 this building has been linked to the Masthouses and Mouldloft (qv) by a new entrance building for Chatham Historic Dockyard. Joiners' Shop originally to make treenails, but later used by the yards joiners. The Resolute Desk (the Oval Office desk) was constructed here by Dockyard Joiners from the timbers of . Brunel Saw Mill 1814. Until 1814 timber was cut by pairs of men, one above and one below the log. In 1758, there were 43 pairs of sawyers working in the yard. In 1812, the sawmill was designed by Marc Brunel, father of Isambard Kingdom Brunel. The mill was driven by steam. The mill was linked to the