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:
Fulton lettering. Submarine Submarine Vessel Submarine Bombs and Mode of Attack for the United States government Submarine vessel longitudinal section Scan from original engineering design in pencil ink and watercolor Library of Congress ADE UNIT no Robert Fulton Detail of Image Fultondesign at resolution to demonstrate restoration