Operation Ivy


US Atomic Veterans

John R. (Jack) Hensley

John R. (Jack) Hensley sent email about his participation during Operation Ivy.

From: BlxJac@aol.com
Date: Wed, 23 Sep 1998
To: pdxavets@aracnet.com
Subject: M.S.T.S. General Collins, John R. (Jack) Hensley, 3rd Mate

Gen Collins
Photo from Stacy Blackburn. Click on the picture for a larger view.

The General E.T. Collins was a troopship ( on a C-4 type hull) operated by theMilitary Sea Transportation Service. ( During WW2 this was A.T.S.; Army Transportation Service. After the war, it was given to the Navy to run.) M.S.T.S was operated by civilian crew. All officers were licensed Merchant Marine and most held Navy Reserve commissions.General E.T. Collins normal run during 1952, was San Francisco (Ft Mason)Yokahama. Sasebo, Pusan, Inchon back to S.F.

In the spring of 1952 upon arrival S.F. I was relieved (with no explanation) and told to report to the Navy Damage Control school on Treasure Island. In addition to the normal Damage Control school, we were given training on Nuclear Decontamination Procedures. We were told that upon completion of the course, we would be reassigned to our regular ships and would be responsible for setting up the procedures on our respective vessels.

I rejoined the ship in late summer and we resumed our normal run to Japan. Around October, after making our normal run to Yokohama, we were diverted to Eniwetok "until further notice" Upon arrival and anchored in the lagoon, we were told that we would act as a "hotel" for all of the military personnel stationed on the island during an 'atomic test' At this point we had no idea that it was going to be thermonuclear. We established the seagoing decontamination procedures and drilled crew on its use.

It was at this time that I experienced for the first time in my seagoing career, the use of helicopters. We approached Eniwetok at night, and had been in contact with the Navy security screen, and had identified our vessel. Our seaman on the bridge watch reported a strange noise coming from starboard side and I walked out on the bridge wing to see if I could identify the source. As I stood there peering out into the darkness, a brilliant spotlight illuminated the bridge from the direction of the strange noise. Only then did I realize that we were being observed by a helicopter (The ships name is painted on the superstructure just aft of the bridge. This was what the security force in the helicopter was looking for to verify our identity.)

Several days later we received a message from the command ship Estes that they would be sending our mail over to us. We made preparations to receive a boat alongside. Instead, a helicopter approached, hovered momentarily over the fantail and dropped our mail bags. Old seadogs wondered what this world was coming to.

As time progressed we were advised that the tests would be of a "thermonuclear" nature.

On "shot" day, loaded with all of the personnel from the island, we proceeded out of the lagoon and took up station 30 miles south of ground zero.

After the "shot" ( no "blast" the sound was like a firecracker going off) the mushroom cloud soon filled the sky. At our location, 30 miles south of ground zero, it was thought that we would be well clear of the cloud. Shortly, the edge of the cloud was directly overhead and we received a message from the Estes for "all ships are to head south at all possible speed."

Our first thought was that someone in the planning had misplaced a decimal, as it was well known that the scientific crew was not all that sure about just what WAS going to happen when the device was fired.

Later in the day we were cleared to return to the lagoon. We experienced no fallout for 48 hours. Then during the evening after a series of rain squalls we found that we were mildly contaminated. We instituted our much practiced "decontamination" procedures and soon returned to normal readings.

A few days later we had a test of a conventional atomic device, but after the thermonuclear shot it was not that interesting.

After this were released from Task Force 132.2 and returned to San Francisco and resumed our normal duties

To: pdxavets@aracnet.com
Subject: Re: Atomic Veteran

Tape arrived today OK. Thank you very much for your help. It was very interesting. In the last few minutes, as the guy is sitting on the beach doing the wrapup of the film, the ship in the background is the General E. T. Collins. She is easy to recognize because she was the only C-4 type vessel that was there. The C-4 has a unique profile in that the bridge structure is placed well forward on the hull, and the structure that sets over the stern houses the engineering space.

Again. Thanks for your help.

John R. (Jack) Hensley September 23, 1998
2065 S Abrego
Green Valley, Az 85614
Phone/Fax 520 648 7148

Email: BlxJac@aol.com

Keith Whittle
September 23, 1998

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