83 



The weight of the Armstrong 1 1 0-pounder is 83 cwt. 



„ the old 6 8 -pounder, 95 cwt. 

 Whitworth 12-pounder (breech-loader), 3J diameters: — 

 Weight of shot, 14 T Vo lbs. 

 Initial Telocity, 121 feet per sec. 



By multiplying the weight of the shot by the square of the velocity, 

 the result is 22,813,000 lbs. work done. 



Comparison between the u Royal George" and u Glatton" 



H. M. S. " Royal George," 78 Guns. 



i 



H.M.S. "Glatton" (iron-cased), Battery, 14 Guns.; 



Tonnage, 2616. 

 Speed, 9 - 375 knots. 



Length between perpendiculars, 205 ft. 

 7 in. 



Breadth, extreme, 54 ft. 6| in. 

 Draught forward, 22 ft. 10 in. 



„ aft, 23 ft. 10 in. 

 Displacement, 4110. 

 Rate in knots per hour, 10-397. 

 Length to breadth, 3 "77. 

 Nominal horse poAver, 400. 

 Speed, 3 x mid. sec. indicated power, 

 543-5. 



Speed, 3 x displacement §-, indie, power. 

 1-332. 



Tonnage, 1535. 

 Speed, 4 - 5 knots. 



Length between perpendiculars, 172 ft. 

 6 in. 



Breadth, extreme, 45 ft. 2| in. 

 Draught forward, 8 ft. 4 in. 



„ aft, 8 ft. 8 in. 

 Displacement, 1640. 

 Rate in knots, 14-539. 



Nominal horse power, 150. 

 Ditto, 49-8. 



Ditto, 18-3. 



The greatest sea speed yet obtained is that of the Kingstown and 

 Holyhead E. M. S. " Connaught," 2056 tons, b. m. ; length, 348f feet ; 

 17'797 knots (mean) = 20-502 statute miles ; nominal horse power, 720 ; 

 indicated horse power, 4200, 



Result of official Trial of II. M. Armour- cased Steam Sloop, " Enterprise" 

 {designed by Mr. Reed, Constructor of the Royal Navy). 



Tonnage, j Horsepower. I Guns. I Draught forward. I Draught aft. 

 990 j 160 4 J lift. 10in. | 15 ft. 8 in. 



FULL BOILER POWER. 



Speed at measured Mile. 





Time. 



Eevol. 

 Engines. 



Speed. 

 Knots. 



Pressure 

 Steam. 



Vacuum. 



Revol. 

 Screw. 





m. s. 







lbs. 







First run, 



7 40 



98 



7-826 



23| 



26 



56 



Second run, . . . 



5 13 





19-027 



221 



26 



99 



Third run, .... 



6 32 



98 



7-265 



22 



26| 





Fourth run, .... 



5 3 



100 



11-881 



23 



27 



11 



Fifth run, .... 



7 26 



97 



8-072 



22 



26§ 





Sixth run, .... 



5 8 



100 



11-681 



221 



26| 



55 



