13in breech, USS Oregon (BB-3)
Here we see the breech of one of the 13in guns of the Indiana class battleship USS Oregon (BB-3) with the breech block in the closed position and a view of the firing equipment right in the centre.
How to cite this article:
Rickard, J (21 October 2023), 13in breech, USS Oregon (BB-3) , http://www.historyofwar.org/Pictures/pictures_USS_Oregon_BB3_13in_breech.html
