Boats from HMS EREBUS and HMS TERROR - Captain James Clark Ross.
Sounded in open ocean at 27.43 S and 17.48 W.
Recorded depth of approximately 2200 fathoms.
First modern successful sounding in deep ocean
Image ID: theb3770, Voyage To Inner Space - Exploring the Seas With NOAA Collect Location: South Atlantic Ocean Photo Date: 1840 Credit: NOAA Central Library