Pickerel (SS-524), surfacing at a 48 degree up angle, from a depth of 150 feet, during tests off the coast of Oahu, Hawaii, 1 March 1952
Text from All Hands magazine, May 1952 edition, courtesy of Stan Svec & /ussubvetsofworldwarii.org.
Official USN photo # NH 97019, from the collections of the Naval Historical Center. Image via Navsource