428-GX-USN 1146012  Cold War, Soviet Ships. Diagram of the Soviet OSA I class guided missile fast patrol boat, received November 1970.   U.S. Navy Photograph, now in the collections of the National Archives. (2016/05/03).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/127906254@N06">National Museum of the U.S. Navy</a>
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