Gunnery practice with a 3in/50 (7.6 cm) Mk 33 twin mount aboard the newly commissioned U.S. Navy amphibious cargo ship USS <i>Durham</i> (LKA-114).
USN
U.S. Navy photo <a rel="nofollow" class="external autonumber" href="http://www.navysite.de/cruisebooks/lka114-70/053.htm">[1]</a> from the <a rel="nofollow" class="external text" href="http://www.navysite.de/cruisebooks/lka114-70/index_005.htm">USS <i>Durham</i> (LKA-114) 1970 cruise book</a>.