Brian Moseley, Plymouth
Webpage created: July 01, 2019
Webpage updated: July 01, 2019

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The first of the Building Slips to be constructed at the Royal Dockyard was the one nearest the boundary wall at Mutton Cove: it became Building Slip number 5 and in 1849 was renumbered as Building Slip number 1.  The plans were drawn up in August 1774 and the estimated cost was expected to be 1,056 1s 6d for materials and 834 6s 8d for labour, a grand total of 1,890 8s 2d.  Further alterations were made circa 1788.

Between 1814 and 1821 the timber roof was added, to the designs of Sir Robert Seppings (1767-1840), Surveyor to the Navy.  This gave protection from the weather to the wooden ships and the men working on them.

A document held at the Public Record Office gives the measurements of Building Slip 5 as: length along the floor, 174 feet 9 inches; breadth  at bottom, 43 feet 9 inches; breadth at top, 56 feet exactly; depth at head, 4 feet 9 inches; depth at jetty end, 15 feet 6 inches, length to top of slope, 183 feet.

As previously mentioned, in 1849 Building Slip 5 was renumbered Building Slip 1.

It would appear that at some point Building Slip 1 was enlarged because the official measurements given by the Ordnance Survey in 1912 were: length 237 feet 6 inches and width at entrance 49 feet.

To the north of it were Machine Shop 2A, the King's Hill, and a Boiler House.  Along side it was an Underground Pump House and Building Slip 2, the Shallow Dock.

This Slip is now known as "The Covered Slip" and has is a Grade II* Listed Building status.