Map showing soundings taken by Coast and Geodetic Survey Steamer BLAKE. Plotted
by W.C.W. (W. C. Willenbucher) . This sheet includes plotted depths, surface
and bottom temperatures, and various profiles of the continental shelf and slope
. The Blake Plateau shows as a conspicuous widening of the continental slope
in the 400 to 500 fathom range south of Cape Hatteras.