Complex sentence: USS "Shawnee"--a single-turreted, twin-screw monitor--was built by Curtis & Tilden, Boston, MA, and delivered 22 July 1865, and completed August 1865.
Split into simpler sentences: USS "Shawnee" was a single-turreted, twin-screw monitor built by Curtis & Tilden, Boston, MA. It was delivered 22 July 1865, and completed August 1865.