THE COST OF OPERATING DREDGES 



257 



In the dredge "Fin MacCool" employed at the Buffalo Break- 

 water during the season May-October, 1899, working from 12 to 

 14 hours per day, the proportion of the time employed in dredging 

 and that lost in delays, was, according to Mr. Emile Low (Engineer- 

 ing News, October, 1906), as follows: 



which shows that the time employed in dredging was 58 per cent, 

 while 42 per cent of the total time was lost in delays. Mr. Low 

 indicates also the various causes of delay together with the time 

 lost for these causes: 



Item of Delay. 



Total. 

 Hrs. Min. 



Hoist cables 24 55 



Clam 101 40 



Main engines. . : 4 55 



Boilers 1 05 



Anchors and attachments. ... 7 20 



A frame and boom 6 15 



Breakdowns, dredge 35 



Leaking scows 1 05 



Repairing scows 14 51 



Siphoning scows 3 47 



Item of Delay. tT Tot f, 1 -' 



Hrs. Mm. 



Waiting for scows 29 54 



Waiting for tugs : . 9 37 



Meals 125 40 



Rain and fog 4 15 



Sea 317 35 



Moving and placing 67 49 



Miscellaneous 36 26 



Holidays, etc 42 53 



Total .800 35 



