The following text is from the original listed building designation:
The following building was de-listed on 13th August 1999
SHEERNESS DOCKS
1.
5282
Sheerness
Walls of the Great Basin;

TQ 9075 SE 5/110 15.3.77.
TQ 9074 NE 6/110
II GV
2.
C.1814. Built by Sir John Rennie, engineer to the Admiralty, and who was responsible for all the heavy engineering works at Sheerness Dockyard. This is built on piles and was carried out by convict labour. Superstructure of granite blocks, the stepped docks having incised Roman numerals. A good example of Royal Naval Docks of the early C19.
Listing NGR: TQ9090174964 (3)

Previously TQ 97 NW 40

Description from record TQ 97 NW 39:
Walls of the Great Basin were built in c.1814 by Sir John Rennie, engineer to the Admiralty, and who was responsible for all the heavy engineering works at Sheerness Dockyard. This is built on piles and was carried out by convict labour. Superstructure of granite blocks. Listed Grade II (1). Additional reference (2).

Description from record TQ 97 NW 1027:
c1814, built by Sir John Rennie, Engineer to the Admiralty. Built on piles by convict labour. Superstructure of granite blocks. (1)

Historic England archive material: AF1025500 RCHME: Sheerness Defences, Kent RCHME Cambridge surveyed the Sheerness Defences in 1994, as part of the East Thames Corridor Project.Contents : 5 plans, 2 overlays, 9 reports, 15 field record forms, correspondence, photographs, research material, survey dataCondition : INTACTMiniature Format Film Number: 223/Y,223/Z,224/A,224/B,224/C,224/D

1858, Sheerness Dockyard 1858 labelled plan (Map). SKE18272.

<1> DOE (HHR) Borough of Swale, Kent (30.6.78) (OS Card Reference). SKE39950.

<1> Department of the Environment, KCC Greenback Index (Index). SWX9400.

<2> Watson-Smyth, M. (ed.), 1993, Deserted Bastions - Historic Naval and Military Architecture (Monograph). SWX9394.

<3> English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.