1865: July 25

A single-turreted, twin-screw monitor built by George W. Lawrence & Co. Portland, Maine and was launched on July 25, 1865. The Wassuc was a casco-class monitor intended for service in shallow waters. The ship's design sacrificed armor plating for the shallow draft and was fitted with ballast compartments designed to lower the ship during battle. A serious problem was discovered with this class. There was only three-inches of freeboard, so on June 24, 1864 the Wassuc's deck was to be raised 22 inches. She was laid up in the Boston Navy Yard and saw no commissioned service. Renamed the Stromboli on June 15,1869 but resumed the name Wassuc on August 10, 1869. She was sold for scrap on September 9, 1875.

Displacement: 1,175 tons
Length: 225 feet
Beam: 45 feet
Draft: 6 feet