The first USS Montauk was a single-turreted Passaic-class monitor in the Union Navy during the American Civil War.
USS Montauk (left) alongside USS Lehigh in Philadelphia Navy Yard, circa 1902.
Montauk destroys Rattlesnake
Montauk beached for repair
George Cook, half stereo of Federal ironclads Weehawken, Montauk and Passaic firing on Fort Moultrie, Sept 8, 1863 (click to enlarge) - The Valentine, Richmond, Va.
The Passaic-class ironclad monitors of the U.S. Navy saw service in the U.S. Civil War and the Spanish–American War. The class was an improved version of USS Monitor equipped with a 15-inch Dahlgren gun in place of one of the 11-inch guns.
USS Lehigh on the James River
USS Lehigh and USS Montauk in the Philadelphia Navy Yard, circa 1902