The experimental U.S. Navy Bell SKMR-1 Hydroskimmer underway, circa 1963.
U.S. Department of Defense
<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/ah196406.pdf">June 1964</a>, p. 17.