Obras Portuarias Company,, South America, whose diligent and constant 

 struggle against the sea brought this work to a successful end. 



THE MACHINERY OF THE DREDGE 



The machinery of the dredge consists of the following: 



1. 2 Superior Diesel engines, 450 h.p. American make 

 which operate the two dredge pumps. 



2. 2 Chicago Pneumatic diesel engines with generators, 

 200 h.p. These produce the energy to operate the 

 auxiliary motors and winches. 



3. Strong pumps for water pressure, vacuum refrigeration, 

 lubrication, etc. 



/+. Bilge pumps . 



5. Electrical distribution panel. 



On the outside of the engine room there are six pipes which 

 connect to the suction tubes of the dredge. Each pump is coupled 

 to each of these pipes by a flexible hose. Water at high pressure 

 is injected separately into each of the suction tubes by the water 

 pressure pump to agitate the sand and facilitate its removal. The 

 suction tubes are on the seaward side of the dredge. 



The base of these tubes are fastened to large brackets which 

 are securely attached to the wall of the structure. They can be 

 swung in a manner that will permit the pumping of sand from the area 

 along the front of the dredge and even from in between the tubes 

 themselves. 



The vertical and lateral motion of the tubes are controlled by 

 cables which run in front of the operators booth and along the roof 

 of the main room. There are three winches for each tube or a total 

 of eighteen winches. 



The movement of each suction tube is controlled electrically by 

 an operator stationed at a window between each pair of tubes. 



From two discharge tubes of the dredge, a pipe line runs direct 

 to the sub-station located at the foot of the wharves. It then 

 continues along wharves cross the entrance to the repair basin and 

 terminates on the seaward bank of the eastern breakwater. At the 

 repair basin entrance there is a draw which can be opened for the 

 passage of ships. 



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