The Chilean submarine <i>Thompson</i> (SS-22) underway during exercise UNITAS III, in 1962. <i>Thompson</i> had been commissioned in the United States Navy as USS <i>Springer</i> (SS-414) from 1944 to 1947. She was reactivated in 1960 and transferred to Chile in 1961 where she served until 1972.
U.S. Navy
<a rel="nofollow" class="external text" href="http://www.navy.mil/ah_online/department_arch.html">U.S. Navy All Hands magazine</a> <a rel="nofollow" class="external text" href="http://www.navy.mil/ah_online/archpdf/ah196302.pdf">February 1963</a>, p. 5.