This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
USS Porter (DD-356)
()
Photographer
Unknown authorUnknown author
Title
USS Porter (DD-356)
Description
English: Off the Mare Island Navy Yard, California, 4 November 1941, following her last pre-war overhaul. Note that an FC radar antenna has been fitted to her main battery director. Her mast has been modified to receive the antenna for an SC radar set, but the antenna has not yet been installed. Photograph from the Bureau of Ships Collection in the U.S. National Archives.
This image is available from the Naval History and Heritage Command under the digital ID 19-N-26239. Most of the photos found in the NHHC collection are in the public domain and may be downloaded and used without permissions or special requirements. Those which are not will be noted in the copyright section of the NHHC image description.[1]
Public domainPublic domainfalsefalse
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.