The following text is from the original listed building designation:
TQ 76 NE CHATHAM MAIN GATE ROAD
Chatham Dockyard
762-1/8/84
No.4 Dry Dock
GV II
Dry dock. c1840, enlarged 1908. Granite and concrete. Stepped sides with flights of steps and haulage slides. Side of former entrance curved for lock gates, now closed by a C20 steel caisson. Forms one of a group of three C19 dry docks at the heart of the historic dockyard. The wider floor makes it particularly suitable for the servicing of merchant ships.
(Source: Coad J: The Royal Dockyards 1690-1850: Aldershot: 1989: 99-107).
Listing NGR: TQ7589069361

Description from record TQ 76 NE 129 :
(TQ 7610 6950) SAM No. 390 [Dry docks Nos 2, 3 and 4: scheduled]. (1) The first dry docks to be constructed as part of the late seventeenth century expansion of the dockyard complex were started c. 1685. These early docks were of wooden construction and needed constant and expensive repairs. The early docks were expanded and enlarged as the size of warships increased. Four docks were in use up until the early 19th century when the first completely new dock at Chatham since the seventeenth century was built. The new dock was entirely stone built. (2) Detailed review of the technological progress made at the time of the construction of the new stone dock by John Rennie, 1816-1821. (3)

Archaeologia Cantiana 107 1989 173-193 (P McDougall) (OS Card Reference). SKE37326.

English Heritage 1:1250 SAM location maplet (OS Card Reference). SKE41612.

Jonathan G Coad, 1989, The royal dockyards 1690-1850: architecture and engineering works of the sailing navy. No.1, Plate Nos. 87-88 (Bibliographic reference). SKE6362.

Weeks, 1999, Planning application for the 3 ships attraction at the Historic Dockyard dry docks 2, 3 & 4 for Chatham Dockyard (Unpublished document). SKE15831.