HMS RACEHORSE in pack ice - Captain Constantine Phipps.
Sounded in Norwegian Sea in 683 fathoms.
Brought up blue mud.
First modern successful sounding on continental slope area.
Not sounding in image
Image ID: theb3769, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Location: Norwegian Sea
Photo Date: September 4, 1773
Credit: NOAA Central Library
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of the U.S. Department of Commerce, National Oceanic & Atmospheric
NOAA Central Library
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April 30, 2013