The USS Oxford (AG 159) was originally commissioned a Miscellaneous Auxiliary ship in July 1961 in New York. She was immediately outfitted to participate in the National Security Agency’s Technical Research Ship (TRS) program — though she would not be redesignated an Auxiliary Technical Research Ship (AGTR-1) until years later in 1964.
The Center for Cryptologic History’s Almanac 50th Anniversary Series article, “The TRS Program Part I: The Beginning,” describes perfectly the Oxford’s significant contribution to the Cuban Missile Crisis.
The Oxford was officially known as a Technical Research Ship. Its initial mission was a training cruise. This gave the crew a chance to familiarize themselves with equipment on board and to identify any problems with the newly refurbished, redesigned ship before traveling to the Middle East. Although several features were identified that required change or improvement, overall the test proved to be a great success. For example, the Oxford recorded frequencies and collected a large number of other transmissions. As the capabilities of the Oxford became clear, the list of potential targets for these ships quickly expanded to include countries all over the globe.
In August 1962, as relations between the United States and the Soviet Union over Cuba grew increasingly tense, the Oxford was diverted to the Caribbean. Its mission was to collect the communications coming out of Cuba, used by both Soviet and Cuban entities. The Oxford proved to be the largest producer of SIGINT during the Cuban Missile Crisis [emphasis added]. The communications it collected provided a great quantity of information which, when combined with the photographs from the U2 overflights, provided a very good picture of what was happening in Cuba.
USS Oxford’s success in the Cuban Missile Crisis “demonstrated the value of the TRS program” and paved the way for naval cryptology aboard future Technical Research Ships: Georgetown, Jamestown, Muller, Belmont, and Liberty.
V/r
David
Sources:
https://www.nsa.gov/public_info/declass/cuban_missile_crisis/1962.shtml
Station HYPO 
25 November 2015 at 13:25
A fantastic look at how critical maritime collection was during this crisis. Does our afloat capacity still fill a relevant role today? If no, why not?
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25 November 2015 at 22:33
I served from May 1963 – Nov 1964 on the USNS Muller off the coast of Havana and I never saw the USS Oxford. So I'm having a hard time understanding how it was the largest producer of SIGINT in the Cuban missile crisis. The Muller roamed those waters for at least 4 years.
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25 November 2015 at 23:55
Mr. Patterson — first, let me thank you for your service as well as for your readership. The specific time period discussed above is prior to USNS Muller beginning her operations off Havana. The quote “the largest producer of SIGINT during the Cuban Missile Crisis” is a direct quote from one of NSA's declassified reports referenced above under sources. Such statement refers to Oxford's contributions between approximately Jul – Dec 1962. Additionally, the declassified message above reflects a desire for a more permanent presence off of Cuba to be filled by an MSTS ship. USS Oxford's presence was temporary pending the arrival of a more permanent solution. From what I gather, USNS Muller was that very solution. Thank you again for reading. V/r David
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3 August 2017 at 18:41
I’ve got 8mm film of62 action off havana but still honor my navy oaths of my security clearance. Allenfelgate@hptmail.com
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22 August 2017 at 10:42
I was serving on USS Oxford while we were tweaking Castro’s beard from near the end of July 1962, till early 1963. When the Navy wants to talk about what we did, then fine. As far as Mr. Patterson goes, he arrived after we departed…so please don’t tell us what we did or did not do.
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13 January 2018 at 09:41
I was aboard the Oxford in 1962 and I watched people in Havana Cuba driving and walking
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8 September 2018 at 19:58
.I put the oxford in service at the Brooklyn Navy Shipyard. We did one cruise to Panama canal zone then south to so america, On our return we was ordered to Key West. from there we spent our time sailing across a track in front of Havana harbor for better than 8 months listening to Cuba and Russia talking to each other .While we was there we also became rescue at sea for immigrants leaving Cuba and coming out to sea in anything that would float I was a boatswain mate 3. In first division.
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18 November 2018 at 22:13
My brother was on one of the ships, he never did say much about it before he died. I would like to have more about this if possible.
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17 January 2019 at 20:53
I served aboard the USS Oxford from June 1962 till July 1964 which includes the 8 months we patrolled back and forth 3 miles in front of Havana Harbor watching Russian ships go in and out of the harbor. This was when Castro was declairng 12 mile territorial waters. We were constantly harassed by Cuban PT boats with their guns aimed at us, many times at night showing no running lights. We picked up many refugees fleeing Havana to the ship. Castro certainly knew we were there.
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19 February 2019 at 18:59
I went aboard USS Oxford in July or August, 1961 after my 19 month tour in Karamursel, Turkey. Oxford had already been commissioned when I came aboard. Was an R Brancher. Enjoyed the cruise to South America from January 1962 – May 1962. SHELLBACK initiation was a hoot when we crossed the equator. Was discharged from the Navy July 13, 1962. Enjoyed my four years in the Navy.
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24 November 2020 at 17:25
I worked at NSGA Gtmo 70-71 and 79-81. My supervisor was CTI1 Al Brake. He told me about being on a collection ship during early to mid 60s off Havana. He said they would frequently break down and lose power. Al said Castro would send tugs out to push the collection ship back out of the harbor and 3 mile limit because he didn’t want an international incident.
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