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Roman riverboat, 136m west of Greenwood Theatre

List Entry Summary

This monument is scheduled under the Ancient Monuments and Archaeological Areas Act 1979 as amended as it appears to the Secretary of State to be of national importance. This entry is a copy, the original is held by the Department for Digital, Culture, Media and Sport.

Name: Roman riverboat, 136m west of Greenwood Theatre

List entry Number: 1001979


Legacy Record - This information may be included in the List Entry Details.

The monument may lie within the boundary of more than one authority.

County: Greater London Authority

District: Southwark

District Type: London Borough


National Park: Not applicable to this List entry.

Grade: Not applicable to this List entry.

Date first scheduled: 10-Jun-1983

Date of most recent amendment: Not applicable to this List entry.

Legacy System Information

The contents of this record have been generated from a legacy data system.

Legacy System: RSM - OCN

UID: LO 157

Asset Groupings

This list entry does not comprise part of an Asset Grouping. Asset Groupings are not part of the official record but are added later for information.

List entry Description

Summary of Monument

Legacy Record - This information may be included in the List Entry Details.

Reasons for Designation

The River Thames was of enormous importance during the Roman period as the principal civil port of the province. The remains of the Roman waterfront survive at several points along the bank of the Thames, largely under modern buildings. Diocletian's Price Edict for the relative inexpensiveness, reliability and convenience of waterborne transport indicates that it would have been a favourable and significant element of the provincial communication network. Riverboats and barges would have greatly assisted in the distribution of imported and domestic goods both locally, within the provincial capital Londinium, and over larger distances. Barges would have been used on rivers to move cargo wherever channels were sufficiently deep to allow their passage. The Roman riverboat, 136m west of Greenwood Theatre, is a rare survival of its type, which is well preserved. The Roman estuarine creek has provided silty, alluvial and waterlogged deposits, which have aided the preservation of the riverboat. Partial excavation indicates that the riverboat is relatively complete and provides a significant source of information on the construction, type and size of vessels, which were used in the Roman period. A large part of it remains unexcavated and holds archaeological potential for further investigation.


Legacy Record - This information may be included in the List Entry Details.


The monument includes a Roman riverboat surviving as below-ground remains. It is situated on the east side of New Maze Pond at New Guy's House, the surgical wing of Guy's Hospital. The remains of the boat are 3.5m below ground level and orientated broadly north-south. They survive under a grass area between two buildings of the hospital. The boat is situated on the east side of what was originally an estuarine creek off the River Thames. The northern end of the boat comprises a stem or sternpost with carvel-laid strakes. It is constructed of oak (Quercus) timbers between which is some caulking of hazel (Corylus avellana) shavings in pine resin. The planks are attached to the oak frames by iron nails with flat heads and square shanks, whose points have been bent over their inboard faces. Near the centre of the vessel is a ceiling of oak planks. The total length of the vessel is thought to be at least 16m and it has a beam of about 4.25m and a height amidships of about 1m. Hydrostatic analysis has indicated that it was a river craft or barge, which probably carried a cargo of about 7 tonnes. Roman pottery sherds recovered from the site indicate that the boat was abandoned in about AD 200, after which the creek silted up. Partial excavation in 1959-60 uncovered the northern part of the boat but the southern part remains unexcavated and the vessel is in-situ apart from a few fragments preserved at the Shipwreck Heritage Centre, Hastings. The monument excludes all modern buildings, roadways, pavements, fences and fence posts but the ground beneath all these features is included.

Sources: Greater London SMR 090324/00/00. NMR TQ37NW376. PastScape 1489830. The NAVIS I Project: Ships: United Kingdom: New Guys House (Ship Number 21), retrieved from on 11th November 2009

Selected Sources

Legacy Record - This information may be included in the List Entry Details

National Grid Reference: TQ 32810 79923


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End of official listing