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Latitude: 51.0714 / 51°4'17"N
Longitude: 1.1144 / 1°6'51"E
OS Eastings: 618279.491235
OS Northings: 134845.893054
OS Grid: TR182348
Mapcode National: GBR V0N.LLJ
Mapcode Global: FRA F669.5Z6
Entry Name: Royal Military Canal, Seabrook Lodge Bridge to Seabrook Sluice
Scheduled Date: 17 December 1986
Source: Historic England
Source ID: 1003260
English Heritage Legacy ID: KE 396 U
County: Kent
Civil Parish: Hythe
Built-Up Area: Hythe
Traditional County: Kent
Lieutenancy Area (Ceremonial County): Kent
A 1.05km length of the Royal Military Canal running NNE from Seabrook Lodge Bridge to Seabrook Sluice.
Source: Historic England
This record was the subject of a minor enhancement on 12 August 2014. The record has been generated from an "old county number" (OCN) scheduling record. These are monuments that were not reviewed under the Monuments Protection Programme and are some of our oldest designation records.
The monument includes a length of the Royal Military Canal, an early 19th century defensive work, situated on low-lying ground near the seafront at Seabrook. It runs broadly ENE for 1.05km from Seabrook Lodge Bridge to Seabrook Sluice. At the west end is a ‘kink’ in the canal, designed to allow enfilading fire if the enemy attempted to cross it.
The length of canal is water-filled and the surviving features include the parapet, a bank on the north side, and the Royal Military Road which largely survives as buried remains.
The eastern end of the Royal Military Canal was originally excavated under a projecting escarpment and a drawbridge, removed in 1840, which carried the Hythe to Folkstone Road across the cut. It was protected by Shorncliffe Battery to the east.
Source: Historic England
The Royal Military Canal was a massive coastal defence work constructed between 1804 and 1809. Its purpose was to separate the expected landing and deployment of Napoleon's troops upon the coast of Romney Marsh and Walland Marsh from the interior of the country. The Government initially considered flooding the marsh but favoured the canal, which was the idea of Lt. Col. Brown, the Assistant Quartermaster-General. He carried out a survey and work commenced in 1804 at the height of the invasion scare, with John Rennie as consulting engineer (until 1805). The canal ran a total of about 28 miles from Shorncliffe Camp via Hythe inland to Appledore, to join the Eastern River Rother at Iden lock, from where it became part of first the Rother and then the River Brede, turning into a canal again from Winchelsea to Cliff End on the coast. Excavated earth formed the banquette and parapet on the landward side of the canal and behind this was an army supply route, the Royal Military Road. On the opposite side were the tow path and wharves. It also included a back and a front drain. The canal and parapets were so built that gun positions could be provided at the end of each length to flank the crossings. However by the time the canal was completed in 1809, the threat of invasion had passed, following Napoleon’s defeat at the Battle of Trafalgar, and it was to some extent obsolete. In 1810, the canal was opened for public use and tolls were also collected for use of the Royal Military Road. In the later 19th century public use declined. The last toll was collected at Iden Lock in December 1909. Today Iden lock is a sluice, so the main part of the canal is isolated. The eastern section of the canal is still in use for pleasure boats.
The Royal Military Canal was an important element in the Napoleonic defences of south-east England and is the only military canal in the country. It is a unique defensive work that bears significant testament to a period when modern Britain faced the most serious threat of invasion prior to the major conflicts of the 20th century.
Despite some disturbance and damage, the 1.05km length of the Royal Military Canal running NNE from Seabrook Lodge Bridge to Seabrook Sluice survives relatively well. It will contain archaeological information relating to its construction and use.
Source: Historic England
Websites
Romney Marsh Countryside Project: Royal Military Canal website, accessed from http://www.royalmilitarycanal.com/pages/index.asp
Other
NMR LINEAR38. PastScape 1042908.,
Source: Historic England
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