gear. The rope was taken three times round this stopper which was lined out with brass plated 

 wooden chocks. In order to fix this stopper the starboard anchor chain had to be removed. 

 The reel for hauling in the dredge-rope, (Fig. 4) weighed about 2000 kilograms, and 



was constructed by the Maschynen- 

 fabriks- Actiën- Gesellschaft Vul- 

 kan of Vienna. It was originally 

 provided with an automatic winder, 

 but as this device did not work 

 satisfactorily it was removed. It 

 was driven byan electromotor of 5 

 horsepower, supplied by the Elec- 

 trotechnic Industry ltd. Slikker- 

 veer Holland, constructed for a 

 current of 80 volts and a variabel 

 speed between 300 and 600 

 revolutions. By means of worm 

 gearing of a ratio of one to 

 thirty an intermediate shaft was 

 driven, that carried a belt pully, 

 from this the power was transmitted 

 by belt to the first shaft of the reel, 

 the belt could be easely removed when 

 not in use. The motor was well raised 

 above the deck to guard againstgetting 

 wet. The starting resistance was fixed 



Fig. 4. Reel for dredge-rope. Scale : '/. 20 . 



Fig. 5. Stopper for dredge-rope. Scale: '/.:• 



overhead to the deck above. The dredge-rope 10000 metres long, was wound on the drum at 

 Amsterdam, in order that the efficiency of the electromotor and of the reel might be tested 

 together. 



The dredge-rope stopper (Fig. 5) consisted of a hollow iron cone provided with two lugs 





