416 KEPORT OF COMMISSIONER OF FISH AND FISHERIES. [46] 



Temperature : 



Of the engine-room deg. Fah.. 110.3 



Of the external atmosphere on deck do 62.5 



Of injection (sea) water do 66.8 



Of discharge water from condenser do 93. 6 



Of feed water do 81 8 



Total time the fires were lighted hours.. 3 7934 



Total time engines were in operation, ship being on her course., .hours.. 186}$ 

 ReTolutions : 



Total number of starboard engine 815, 047 



Total number of port engine 821 172 



Mean number per minute of starboard engiue 72.58 



Mean number per minute of port engine 73. 21 



Total nautical miles steamed 1 } 745, 9 



Mean nautical miles steamed per hour 9. 33 



Total tons of coal consumed 333f £££ 



Total tons of refuse 56|f f§ 



Total tons of coai consumed while the engines were in operation 112£§2o 



Mean number of pounds of coal consumed per hour while the engines 



were in operation 1 } 347 



With the new boilers the speed of the ship, as well as the economic 

 performance of the machinery, has beeu greatly improved. Following 

 is a comparison of the best runs of the ship with each. 



With the orig- 

 inal boilers. 



With the new 

 hoilors. 



Date 



Hours and minutes 



Mean speed 



Steam pressure 



Receiver pressure 



Revolutions 



Vacuum 



Throttle 



Cut-off H.P inches.. 



Cut-off L.P do.... 



Temperature: 



Engine-room deg. F. . . 



On deck do 



Injection do.c .. 



Discharge , do 



Feed- water do 



Mean draught of water feet and inches . . 



Displacement in tons at above draught -. 



Indicated horse-power developed by the engines 



Indicated horse-power developed by circulating-pump 



Aggregate indicated horse-power 



Pounds of coal consumed per hour 



Pounds of coal per indicated horse-power per hour 



Sept. 23, 1883 

 10.48 

 10.44 

 56.1 

 21.1 

 78.65 

 24.04 

 4. 

 19. 

 18.5 



103.7 

 68.4 

 56.7 

 97.9 

 64.3 

 11.81 

 978. 

 442. 

 5. 

 447. 

 1406. 

 3.14 



Sept. 15, 1887 

 8.30 

 10.93 

 65.33 

 17. 



79.91 

 21.5 

 4.6 

 13.1 

 17.3 



117. 

 72.8 

 72. 



104.8 



78.6 



12.7 



1142. 



472.8 



5. 

 477.8 

 1177. 

 2.31 



The new boilers have not yet been urged, and the rate of combustion 

 can be increased about 50 per cent, over that recorded above. 

 The usual periodical inspections have been made of valves, pistons, 



