| Description | Steam Boat Engines (9 items).
1131. Dover Packet No. 6, Ferret (PU & PV). May, Jun. 1831, Aug. 1834. 9 items.
Two 25 horse side lever boat engines, with 30¼ inch cylinders, 2½ foot strokes. Boat re-named Swallow 1837.
Cross-section, plan of the engine deck beams, section of the engine room and boiler, plan and section of sleepers and engine platform, gangway wale and paddle casing - reverse drawings made in the London office; sections and plan of boiler - partially coloured original and partially coloured reverse drawings made in the London office (also used for boilers for the Crusader and Salamander); sketch of paddle wheel and shaft.
Also the following later items: sections and plan of boiler - partially coloured original and partially coloured reverse drawings, Aug. 1834 (these drawings bear letter codes).
Original Portfolio or 'Book' No. 846. Catalogue of Old Engines p. 318.
For H. M. Post Office, Dover station. Ferret was built by W. & H. Pitcher of Blackwall. The boat was re-named Swallow in 1837 when the Navy took over the Post Office packet fleet.
See also: Portfolio 6/31b.
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