44 



DEPTHS OF THE OCEAN 



steel wire soon wore deep grooves in them. Our trawlings, too, 

 took a long time, for the 20 horse-power winch that wound in 



Fig. 26.— The "Michael Sars" trawlinc; wi 

 AND Otter Trawl. 



>M-: Wire Rope 



the wire directly on to the drum was unable to maintain its full 

 speed when the load was unduly heavy. 



On 31st May, at Station 48, the trawl was shot at a depth of 



Fig. 27. — Hauling in Long Lines by means of Line Winch. 



5160 metres with 8750 metres of wire ; we commenced lowering 

 at 5.45 A.M. and started trawling at 11.20 a.m.; hauling in 

 began at 2.50 p.m., and the trawl was once more on board at 



