Aetna (1855)

Scale 1:48. Plan shows the inboard profile of the Aetna class floating battery Aetna (1855). The drawing bears the signature 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].