This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Duncan class diagrams Brasseys . Right elevation and deck plan of British Duncan class battleship Numbers on top diagram show armour thickness shaded areas in inches Numbers on bottom diagram show size of guns in inches or pounds shell Plate in Brassey's Naval Annual Downloaded from archive org circa artist not identified