As part of the Casco-class light draught monitors ordered to be build at the yard of McKay&Aldus as Boston, Massachusetts in April 1863, in 1864 was her design altered by raising her deck to obtain a higher freeboard, launched on 6 January 1865, completed on 30 March, handed over to the navy on 5 April, commissioned on 6 June all in the same year but already decommissioned on 26 May a year later to be laid up at League Island, Pennsylvania, renamed on 15 June 1869 Erebus but all readu renamed two months later on 10 August Squando again and whilestill lying there in reserve in August 1875 broken up.
With a displacement of 1,175 long tons/1,194 tons were her dimensions 225’x 45’x 9’ or 69 x 14, 2, 7 metres. She had a speed of 9 knots, a crew which numbered 60 men, an armament of 2-11”smoothbore Dahlgren guns. The hull was protected by an armour of 3” just like the deck, the single turret by 8” and the pilothouse by 10”.
