soundings can be made with the Lucas-machine at a moderate speed of ship by placing it in 

 a high posftion. 



The lead is then carried well forward before it is dropped. 



For regular and frequent use in tolerably great depths a position on the stern rail is 

 desirable, because as soon as the lead is off the ground speed can be got up and course 

 steered, thus saving a considerable time. 



Carrying the lead forward must howëver then be dispensed with, unless the machine 

 stands far enough overboard so that there is no danger of the wire fouling the propellor. 



For arrangement oj appliances on board II. M. Siboga sec Plate I — III. 





