Listed Building

The only legal part of the listing is the address/name of site. Addresses and building names may have changed since the date of listing – see ‘About Listed Buildings’ below for more information.


Status: Designated


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Date Added
Local Authority
West Dunbartonshire
Planning Authority
West Dunbartonshire
NS 40037 75207
240037, 675207


1882-3. E R Mumford, Superintendent of the works (Mumford,

together with William Froude, naval architect (d. 1879), had

previously established a tank at Torquay). Professor J

McQuorn Rankine, engineer. Narrow ashlar frontage, wide

segmental-arched doorway to right, window in corresponding

panel to left; plain pilasters, cornice, parapet swept up in

centre containing carved panel of William Froude.

Long narrow workshop containing testing-tank runs to south.

Walls mostly brick with buttresses and round brace-plates,

earth embankments.

Slate roof with skylights and wooden sarking not original.

Original triangular steel trusses inside. Long narrow

brick-lined tank, faced with cement plaster, runs the full

length of shed. Double teak walkways supported by girders in

side walls and with double tracks for sliding platforms.

Brick extension at south end dates from 1920s and contains a

wavemaker. Modern 3-storey office extension on east side not

included in listing.

Statement of Special Interest

Built for Denny's of Dumbarton. Panel on street frontage is

inscribed "Leven Ship Yard Experimental Tank"

The first privately owned experimental tank built in the

world, and said to now be the oldest still in existence.

Modified following a fire in 1924, when deep section was

extended by 50 feet, and walkway suspension was improved.

Dean of Guild plans of alterations passed 4.6.1903.



Information per the late Mr Tom Glen, formerly of Vickers Ltd

and of British Shipbuilders. Experiment Book No. 1 dates the

first experiment to 21 February 1883.

DENNY'S OF DUMBARTON, SOUVENIR, 1908 pp 65-75 (inc. illus)

DENNY, DUMBARTON, 1932, pp 65-70 (inc illus), (revised

version of above).


pp 55-7.

About Listed Buildings

Listing is the way that a building or structure of special architectural or historic interest is recognised by law through the Planning (Listed Buildings and Conservation Areas) (Scotland) Act 1997.

We list buildings of special architectural or historic interest using the criteria published in the Historic Environment Scotland Policy Statement.

The information in the listed building record gives an indication of the special architectural or historic interest of the listed building(s). It is not a definitive historical account or a complete description of the building(s). The format of the listed building record has changed over time. Earlier records may be brief and some information will not have been recorded.

The only legal part of the listing is the address/name of site. Addresses and building names may have changed since the date of listing and if a number or name is missing from a listing address it may still be listed. Listing covers both the exterior and the interior and any object or structure fixed to the building. Listing can also cover structures not physically attached but which are part of the curtilage of the building, such as boundary walls, gates, gatepiers, ancillary buildings etc. The planning authority is responsible for advising on what is covered by the listing including the curtilage of a listed building. Since 1 October 2015 we have been able to exclude items from a listing. If part of a building is not listed, it will say that it is excluded in the statutory address and in the statement of special interest in the listed building record. The statement will use the word 'excluding' and quote the relevant section of the Historic Environment Scotland Act 2014. Some earlier listed building records may use the word 'excluding', but if the Act is not quoted, the record has not been revised to reflect current legislation.

If you want to alter, extend or demolish a listed building you need to contact your planning authority to see if you need listed building consent. The planning authority advises on the need for listed building consent and they also decide what a listing covers. The planning authority is the main point of contact for all applications for listed building consent.

Find out more about listing and our other designations at You can contact us on 0131 668 8716 or at


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