20 



THE EXPLORATION OF THE SEA 



[part I 



thing on which the}^ might catch. The trawl rope is coiled round 

 the starboard bollards and is passed aft through the towing chocks 

 so that the shackle to which the bridles are attached is without 

 the rail. A long rope, the " head-rope " has been rigged so that 



After 



I ron 



Fig. 9. Arrangement of the 

 trawl on the deck of the Lanca- 

 shire surveying fishery steamer 

 John Fell. The whole arrange- 

 ment is one adapted for a small 

 vessel such as a steam yacht, 

 and involves little alteration of 

 the deck fittings. Otter trawls 

 are usually employed on yachts, 

 but since the small beam trawl 

 represented can be easily taken 

 to pieces and stowed away out 

 of sight, its use is to be pre- 

 ferred. 



one end of this is attached to the beam near the after iron, Avhile 

 the other end is attached to the shackle : the bight of this rope is 

 brought round to the port bollards and is coiled round these. 



I 



