Alecto (1839), Ardent (1841), Polyphemus (1840)
A handwritten Scheme of Scantlings for building the Alecto (1839), Ardent (1841), and Polyphemus (1840), Steam Vessels (later 3rd class sloops) building at Chatham Dockyard.
Hand written in black with alterations in red. Signed by William Symonds [Surveyor of the Navy, 1832-1848].
Hand written in black with alterations in red. Signed by William Symonds [Surveyor of the Navy, 1832-1848].