File:USS Harder (SS-568).jpg

Summary
Description USS Harder (SS-568) with three shark-fin arrays, known as Puffs, passive fire-control system, BQG-4, circa 1968. USN photo courtesy of ssn583.com., text courtesy of John Hummel. Date	1968 Source	http://www.navsource.org/archives/08/08568.htm Author	USN photo Permission (Reusing this file) Public domain	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, the image is in the public domain in the United States. Seal of the United States Department of the Navy.svg This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. https://commons.wikimedia.org/wiki/File:USS_Harder_(SS-568).jpg

Description USS Harder (SS-568) with three shark-fin arrays, known as Puffs, passive fire-control system, BQG-4, circa 1968. USN photo courtesy of ssn583.com., text courtesy of John Hummel. Date	1968 Source	http://www.navsource.org/archives/08/08568.htm Author	USN photo Permission (Reusing this file) Public domain	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, the image is in the public domain in the United States. Seal of the United States Department of the Navy.svg This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. https://commons.wikimedia.org/wiki/File:USS_Harder_(SS-568).jpg