— 17 



as indicated in the graphic table shown in the respective 

 drawing i Sheet (i ). The quantity to be dredged for a 

 depth of 17 feel a1 the adopted zero by a width of 2CM 1 

 meters is about ISO. 000 cubic meters. 



As there exist immediately below the pass a channel 

 of a depth from 30 to 50 feet, it is probable thai in order 

 to carry this work out, the suction dredger 11 C. may 

 be employed, and that by making use of the periods of 

 floods, the lifted material after having been put in suspen- 

 sion will be carried away by the current. 



In case this proves to be possible, the excavation oiighl 

 be carried out. working night and day, in a short time. 



It is intended to proceed within an early date with the 

 survey of this pass and to make a trial with the named 

 dredger, which trial will be the base of a plan which in 

 due time will be submitted to the Superiority. 



Once this bad bar has been overcome, navigation has no 

 difficulties till past the port of Fray Bentos, the channel 

 being wide and deep almost following the oriental coast. 



From the foregoing' results not only that in the zone Necessity of 

 which has just been described, the bar called "Barrial" "SL buoys!" 

 with reference to the depth to be given to the Uruguay 

 Inferior is the only bad one existing, but also that the diffi- 

 culties with respect to the course to be followed by navi- 

 gation, even during day time, in consequence of the sinou- 

 sities of the channel and because there are no land marks, 

 are many. 



The most appropiate means to facilitate navigation and 

 to give confidence to the pilots who enter the river Uru- 

 guay with vessels of great draught is to mark the channe] 

 over its whole extension with luminous buoys. 



They ought to be luminous, in order that the vessels or 

 river steamers donl sink or injure them by colliding with 

 them during their voyages which in this section of the 

 river are always dining night time and which would be 

 difficult to be avoided considering the manner this zone is 

 navigated during night time using the lead and taking 

 courses, going near the slopes of the channel from one side 

 to the other, which sides are the very places where the 

 buovs must be located. 



