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Weight testing of reassembled a-frame on R/V Atlantis.

Weight testing of reassembled a-frame on R/V Atlantis.
Weight testing of reassembled a-frame on R/V Atlantis.
Weight testing of reassembled a-frame on R/V Atlantis.
Weight testing of reassembled a-frame on R/V Atlantis.
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212108
Wegman, Ernest C.
Weight testing of reassembled a-frame on R/V Atlantis.
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01/12/2013
graphics/Drydock/0187.JPG
Image Of the Day caption:
The research vessel Atlantis is a sophisticated, general-purpose platform in its own right, but it is also specially outfitted to be the support vessel for the submersible Alvin. From 2011 to 2013, Alvin underwent a complete upgrade to significantly enhance its capabilities, which had implications for Atlantis. The new sub is slightly larger and heavier, which meant an upgrade for Atlantiss A-framethe structure used to launch and recover the sub. During a shipyard period in 2013, the A-frame was strain tested by gradually increasing weights attached to a yellow spreader bar on the main lift line. For safety reasons, it was tested up to 100,000 poundsabout twice the weight of the sub.
Photo by Dutch Wegman
© Woods Hole Oceanographic Institution
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