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ANGUS imaging sled deployment during Galálapgos Rift expedition.

ANGUS imaging sled deployment during Galálapgos Rift expedition.
ANGUS imaging sled deployment during Galálapgos Rift expedition.
ANGUS imaging sled deployment during Galálapgos Rift expedition.
ANGUS imaging sled deployment during Galálapgos Rift expedition.
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ANGUS imaging sled deployment during Galálapgos Rift expedition.
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01/01/1977
archives/GalapagosCDROMs/angus.tif
Date is approximate.
Text from Discovery of Hydrothermal Vents site:
On Feb. 15, ANGUS (Acoustically Navigated Geophysical Underwater System) was lowered to the depths to scout the area. Built at Woods Hole for Project FAMOUS, ANGUS was a 2-ton steel cage. It was equipped with cameras and powerful strobe lights. It had a sensor that could detect water temperatures changes as small as 0.005°C. And it had acoustic transmitters that talked to the transponders so that the equipment could be navigated in the dark depths.
ANGUS was towed behind R/V Knorr on a steel cable that stretched to the ocean bottom. It was towed 4.5 meters (15 feet) above the seafloor. Unlike the more delicate Deep-Tow, ANGUS was designed to survive occasional collisions with rugged terrain. Painted on ANGUS's side was the motto: Takes a Lickin But Keeps on Clickin.
As R/V Knorr fought a 1 1/2-knot current to stay over the target site, ANGUS cruised 2,500 meters (8,250 feet) below, taking a photograph every 10 seconds.
Photo courtesy of WHOI Archives
© Woods Hole Oceanographic Institution
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