(Mon.: dp. 1,175;l. 225'; b. 45'; dr. 9'1"; s. 9 k.; a. 2 11" D. sb.; cl. Casco)
Suncook was a light draft monitor built by the Globe Works, South Boston, Mass., and delivered to the government at the Boston Navy Yard on 8 July 1865. As with other ships of her class, she was found to be unseaworthy due to faulty design.
Suncook was laid up at the Philadelphia Navy Yard from 1866 to 1874. Her name was changed to Spitfire on 15 June 1869, but she resumed the name Suncook on 10 August 1869. The monitor was broken up at Philadelphia in July 1874 and sold.