
This photo of the
U.S.S. Passaic and the
U.S.S Montauk was taken on the building ways at the
Continental Yard at Green Point Shipyard, New York. Passaic (in the ship house) is the lead ship of the new and improved monitor class to follow the original
U.S.S. Monitor. She was launched August 30, 1862.
The
Montauk, with incomplete hull side armor, would follow
Passaic into the water several months later with her launching on October 9, 1862.
Command of the ship would be given to John Worden, the wounded captain of the original
U.S.S. Monitor. MONITORS The Men, Machines and Mystique by Jerry Harlowe
Barry,
I haven't read the entire book yet but if I come across any references to the decking I will definitely post them for you.

U.S.S. Onondaga

U.S.S. Catskill with several 1" iron plates removed