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
4/8/2019 11:48:07 AM
Date: September 4, 1773
Credit: NOAA Central Library
Location: Norwegian Sea
Subject: Charting
Subject: Soundings
Subject: Bathymetry
Subject: Mechanical