Here is a not too good, pic of a pic. It shows the barge being towed by Rolligons in tandem. Barge could handle load in excess of 100 ton. I worked for the company with the Rolligons. We were hired to tow barge, which was moving a drill rig and equipment off of a 500 million dollar dry hole called Mukluk Island in 1982. Round the clock for 3 weeks, sleep and eat when loading or unloading or broke down. $$$. History of this barge, if my memory is still good, is that it started out in NY Harbor, dismantled and moved to Canada, made it to Hay River, down the Mckenzie, and then to Prudhoe Bay. It was put back together and used in Prudhoe. I don't think it got much work. Before it could go to work on the ice, in moving the Mukluk rig, the Coast Guard had to fly to prudhoe to sign off that it was seaworthy. I also think the barge operator had to be Coast Guard licensed. Us grunts towing it were not licensed, may be a slip up by the feds..those were the days!
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