SOUNDINGS TAKEN DURING THE DISCOVERY INVESTIGATIONS, 1932-1939 Qi 



are in metres, have been determined directly from the 'Acadia' recorder, but it should be understood 

 that, when continuous soundings are thus being taken, many more depths than those shown could 

 have been plotted. For convenience in reading off the soundings from the record and determining 

 the positions, soundings have been plotted at intervals of five minutes of time, over such distance as 

 the record has been legible. It should, however, be remembered that with varying weather the speed 

 of the ship was not necessarily the same for each crossing and, consequently, that the distance between 

 soundings on different lines, being based on a fixed time interval, varies considerably. 



Fig. 19. Discovery Bank, contours in metres. Positions of soundings shown as dots. 



The rise of the bottom on the northern side of the Discovery Bank is fairly steep, the average slope 

 being approximately 10°. The maximum slope so far determined is approximately 12". On the southern 

 side the fall away to deep water is much less marked, the slope from the 1000 m. to beyond the 4000 m. 

 contour averaging approximately 3!°. The maximum slope barely exceeds 4°. The extent of the shallow 

 water on the western half of the bank appears to have been determined with reasonable accuracy and 

 depths of less than 1000 m. (547 fm.) cover an area of about 700 sq. miles. Two small areas with 

 depths of less than 500 m. (273 fm.) and a minimum so far determined of 457 m. (250 fm.) have been 



