The Thames and Medway Canal is a disused canal

Canal

Canals are man-made channels for water. There are two types of canal:#Waterways: navigable transportation canals used for carrying ships and boats shipping goods and conveying people, further subdivided into two kinds:...

 in Kent

Kent

Kent is a county in southeast England, and is one of the home counties. It borders East Sussex, Surrey and Greater London and has a defined boundary with Essex in the middle of the Thames Estuary. The ceremonial county boundaries of Kent include the shire county of Kent and the unitary borough of...

, south east England, also known as the Gravesend and Rochester Canal. It was originally some 11 km (6.8 mi) long and cut across the neck of the Hoo peninsula

Hoo Peninsula

The Hoo Peninsula is a peninsula in England separating the estuaries of the rivers Thames and Medway. It is dominated by a line of sand and clay hills, surrounded by an extensive area of marshland composed of alluvial silt. The name Hoo is the Old English word for spur of land.-History:The Romans...

, linking the River Thames

River Thames

The River Thames flows through southern England. It is the longest river entirely in England and the second longest in the United Kingdom. While it is best known because its lower reaches flow through central London, the river flows alongside several other towns and cities, including Oxford,...

 at Gravesend

Gravesend, Kent

Gravesend is a town in northwest Kent, England, on the south bank of the Thames, opposite Tilbury in Essex. It is the administrative town of the Borough of Gravesham and, because of its geographical position, has always had an important role to play in the history and communications of this part of...

 with the River Medway

River Medway

The River Medway, which is almost entirely in Kent, England, flows for from just inside the West Sussex border to the point where it enters the Thames Estuary....

 at Strood

Strood

Strood is a town in the unitary authority of Medway in South East England. It is part of the ceremonial county of Kent. It lies on the north west bank of the River Medway at its lowest bridging point, and is part of the Rochester post town....

. The canal was first mooted in 1778 as a shortcut for military craft from Deptford

Deptford

Deptford is a district of south London, England, located on the south bank of the River Thames. It is named after a ford of the River Ravensbourne, and from the mid 16th century to the late 19th was home to Deptford Dockyard, the first of the Royal Navy Dockyards.Deptford and the docks are...

 and Woolwich Dockyard

Woolwich Dockyard

Woolwich Dockyard was an English naval dockyard founded by King Henry VIII in 1512 to build his flagship Henri Grâce à Dieu , the largest ship of its day....

s on the Thames to Chatham Dockyard

Chatham Dockyard

Chatham Dockyard, located on the River Medway and of which two-thirds is in Gillingham and one third in Chatham, Kent, England, came into existence at the time when, following the Reformation, relations with the Catholic countries of Europe had worsened, leading to a requirement for additional...

 on the Medway, avoiding the 74 km (46 mi) journey round the peninsula and through the Thames estuary.