56* 



Table V. Current Measurements. 



IREP. OF THE -.MICHAEL SARS' NORTH 



Stat. 19 C. 2.-3. May 1910. Ca. 36° 8' N. 4° 25' W. 



Magnetic Variation 15° W. — All directions are magnetic with the e.xception of those in Column 6 (Mean Direction). 



The current measurements were made when the s s "Michael Sars" was trawling at a fairly constant speed (37 revolutions in the engine). 

 Notes on the weather:— at the beginning of the experiments calm weather and smooth sea were experienced; at about 2h 30m a feeble 

 breeze from N began blowing. 



70*) 



71-') 



72 



73 



74 

 75 



76*)j 



77 I 



78 <) 

 79*) 



80*) 

 8P) 



2. May 



23h 50ni 



3. May 



Oh 8m 



3. May 



Oh 35ni 



1 4 

 48 



2 29 



3 14 



()h 45m 

 2 39 



Oh 55m 



2 49 



Ih 16m 



3 4 



Oh 53m 



22 



6 



47 



32 



Ih 3m 



2 57 



Ih 13m 



3 7 



Ih 34m 



3 22 



4 N80E; 9 E; 1 S50E 



2 N80E; 12 E 



1 E; 2 S80E; 7 S70E; 3 S60E, 1 S50E 



1 E; 3 S80E; 6 S70E; 3 S60E 



8 S80E; 5 S70E 



1 S80E; 6 S70E; 3 S60E 



6 S60E; 3 S50E 



3 S60E; 6 S50E 



565 9 S,50E; 4 S40E 

 8 S30E 



1 840 W; 1 S50W; 5 560 W 

 13 N80W 



S76E 



S67E 



N87E 



S81E 



S70E 



S58E 



S75E 



S68E 



') No. 65:— The line was strongly deflected towards W. when the Current-meter was lowered to greater depths than 50 metres. 

 274 metres of line were let out. 



-) No. 66:— Tlie line was strongly deflected (westwards) under the keel of the ship. The large messenger had possibly been held 

 by the ship's side for 3.5 min. so that the duration of the measurement had been 15.7 min and the velocity 68 cm/sec (instead of 12.2 and 

 88 resp.) 274 m. of line were let out. 



■') No. 69: — The apparatus had been in contact with the rocky bottom. The wing was bent, and the compass-box torn off; the 

 propeller moved much more slowly than usual. The accident took place at the commencement of tlie observation, and the apparatus was 

 free from the bottom shortly afterwards. The liands showing the number of revolutions had the right position in relation to eacli othsr but 

 had probably moved only after the damage so that the actual velocity was much greater than that calculated. 



«) Nos. 70, 71, 76, 78, 79, 80, 81:^The wire was a little defected forwards (towards E). 



