The second USS Monterey (BM‑6) was the sole Monterey-class monitor. Laid down by Union Iron Works, San Francisco, California, 20 December 1889, she was launched 28 April 1891, sponsored by Miss Kate C. Gunn. She was commissioned 13 February 1893, with Captain Lewis Kempff in command.

Assigned to the Pacific Squadron for harbor defense, the Monterey operated out of Mare Island Navy Yard, making numerous voyages to ports on the West Coast on maneuvers and target practice during her first 5 years of naval service. Each spring the monitor would make a voyage down the California coast or a trip to Washington for target practice. From April to August 1895, she made an extended voyage down the South American coast to Callao, Peru, via Acapulco, Mazatlán, and Panama.

https://en.wikipedia.org/wiki/USS_Monterey_(BM-6)