These photographs document examples of face-hardened naval armor plate, showing the construction and installation methods used to secure heavy plate to a warship’s hull. The first two images show armor sections with bolt holes and mounting hardware exposed; the large threaded fasteners visible in the plates are the armor bolts that anchored each section to the ship’s framing. The third image depicts gun port armor fabricated for the Imperial Russian battleship Peresviet, a Peresvet-class pre-dreadnought battleship of the late 1890s.
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Note the large armor bolts threaded into the armor plate used to attach the armor to the ship. The taper of the plate is clearly shown.
The armor shown here is standing upside down from the way it is installed. The armor bolts are clearly shown in the left side of the picture.
