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Rick Sanger and Phil Santos loading the recovery weights onto HOV Alvin.

Rick Sanger and Phil Santos loading the recovery weights onto HOV Alvin.
Rick Sanger and Phil Santos loading the recovery weights onto HOV Alvin.
Rick Sanger and Phil Santos loading the recovery weights onto HOV Alvin.
Rick Sanger and Phil Santos loading the recovery weights onto HOV Alvin.
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231247
Linder, Christopher L.
Rick Sanger and Phil Santos loading the recovery weights onto HOV Alvin.
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03/21/2014
graphics/SVC/cl_20140321080708.jpg
Image Of the Day caption:
WHOI technicians Rick Sanger (left) and Phil Santos load iron plates onto the research submersible Alvin before a dive. The plates help Alvin descend through the water to the seafloor and stay there without expending a lot of battery power. When Alvin is ready to return to the surface, the pilot jettisons the plates, making the sub light enough to surface. The red flag by Sangers left hand is one of six attached to pins that block the plates release triggers. They prevent accidental release of plates (and possible smashed toes) while the vehicle is on the ship. The flags are removed before launch.
Photo by Chris Linder
© Woods Hole Oceanographic Institution
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