330-CFD-DN-ST-87-05936:  The No. 1 and No. 2 Mark 7 16-inch/50-caliber gun turrets are trained to starboard during the main battery gunnery exercise aboard the battleship USS Iowa (BB 61), 4/23/1987.  PHC Jeff Hilton, USN.   (OPA-NARA II-2016/01/07).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/127906254@N06">National Museum of the U.S. Navy</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/127906254@N06/24155474721/">330-CFD-DN-ST-87-05936</a>