This image was acquired from
flickr. 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:
CF USS Albemarle AV . Seamanship. Knot Board was built by First Division. Left to right BM Bernard T. Lindsay BM M.F. Durham and BM William L. Roger. Photographed June . U.S. Navy Photograph now in the collections of the National Archives. CF USS Albemarle AV . Seamanship. Knot Board was built by First Division. Left