00 



works to be The zone between Fray Bentos and Conception del Uru- 



carned out. " - 1 - 



guay is, as we have seen, more easy to navigate than the 

 one which has been considered first, as the proximity of the 

 channel to the coast allows its direction to be followed, but 

 on the other hand there exists several sand banks which 

 must be dredged and buoyed. 

 Dredging. The dredging has already partly been carried out and its 



conservation has given good results as well as the system 

 of the beacons and buoys used. 

 Buoys and Beacons. It is necessary to jDlace buoys at the following places :— 

 One at the South part of the « Abrigo » island in order to 

 avoid the shallow part at the extremity of this island. 



Three in the <Filomena» channel. The first one carrying 

 the number 32 to mark the direction to be followed in the 

 middle of the river, the second to mark the curve formed 

 by the channel and the third one in the narrow and sha- 

 llow mouth between the « Burro » and the «Filomena Gran- 

 de » island. 



Two in the « Roman » pass. 



One in the bar of « Banco Grande » in order to complete 

 the demarcation of the beacons, marking the Northern end 

 of the channel, which is very narrow. 



Four in the « Montana » bar. 



One below the « Altos y Bajos» bar to mark the slope of 

 this bar; and finally one nearly in front of the mole of 

 Conception del Uruguay to mark the channel only 17 feet 

 deep in the middl of the river. 



The number of the buoys necessary to be placed amount 

 therefore to eleven at starboard and two at port, making a 

 total of 38 buoys between the River Plate and Conception 

 del Uruguay, which must be luminous for the same reasons 

 as given with respect to those projected for the zone between 

 the River Plate and Fray Bentos. 



