122 



ELECTRIC PROPULSION OF SHIPS. 



Electrically Propelled Merchant and Miscellaneous Ships in Service and 



Building. 



Ship 



2 ice-breakers at Niagara Falls 



Joseph Medill 



Graeme Stewart 



Electric Arc 



Tynemount 



Mjolner 



Wulsty Castle 



Aquila, etc 



Mariner 



Eclipse 



Cuba 



Elfay 



Guinevere 



Invincible 



Archer 



Independence 



Alcyone 



Velero II 



Fordonian 



8 cargo carriers 



Poughkeepsie-Highland Ferry. 



Kind 



Tug 



Fireboat 



Fireboat 



Experimental launch 



Cargo 



Cargo 



Cargo 



Cargo 



Trawler 



Cargo 



Cargo and passenger 

 Schooner yacht. . . . 

 Schooner yacht. . . . 



Cargo 



Cargo 



Cargo 



Schooner yacht. . . . 



Yacht 



Cargo 



Ferry . 



Total 

 S. H. P. 



50 



400 



400 



25 



500 



950 



1,500 



1,200 



400 



3,000 



3,000 



90 



550 



3,000 



3,000 



3, 000 



350 



215 



850 



3,000 



200 



Type of drive 



Trolley or cable fed, D.C- 

 Turbine-electric D.C. . . 

 Turbine-electric D.C. .. 

 Petrol-electric A.C. . . 

 Diesel-electric A.C. . . 

 Turbine-electric A.C. . . 

 Turbine-electric A.C. . . 

 Turbine-electric A.C. . . 

 Diesel-electric D.C. . . 

 Turbine-electric A.C. . . 

 Turbine-electric A.C. . . 

 Diesel-electric D.C... 

 Diesel-electric D.C. . . 

 Turbine-electric A.C. . . 

 Turbine-electric A.C. . . 

 Turbine-electric A.C. . . 

 Diesel-electric D.C... 

 Diesel-electric D.C... 

 Diesel-electric D.C. . . 

 Turbine-electric A.C. . . 

 Diesel-electric D.C... 



Tonnage 

 displaced 



500 



16, 000 



3,580 



313 

 1,160 



2,200 



16, 000 



640 DWC. 



Date 



1906 



1908 



1908 



1911 



1912 



1912 



1918 



1918-9 



1919 



1920 



1920 



1920 



1921 

 Building 

 Building 

 Building 

 Building 

 Building 

 Building 

 Building 

 Building 



DISCUSSION, 



President McClellan : — Paper No. 4, by Mr. Thau, on "Electric Propulsion of 

 Ships," is now open for discussion. We have a number of pinch hitters on the list, and 

 if there is anybody who is in a hurry to discuss this paper, and cannot wait, I will give him 

 an opportunity now. (A number of members rose to discuss the paper.) As three or four 

 men got up at once, I think perhaps I had better call on the men who are on the list which 

 has been handed to me, in the order in which their names are entered. The committee first 

 gives me the name of Mr. W. L. R. Emmet, of Schenectady. If he is present, we would 

 like him to speak on this paper. 



