Aetna (1856)
Scale 1:48. Plan shows the sheer lines, longitudinal half breadth and body plan for the Aetna class floating battery Aetna (1856). The drawing bears the signatures of Admiral Sir Baldwin Wake Walker [Surveyor of the Navy 1848-1860], J. Edye [Assistant Surveyor of the Navy 1832-1855] and Isaac Watts [1st Assistant Surveyor of the Navy 1848-1860].