On steam-ship performance. 



193 



Second Report of the Committee on Steam-ship Performance. 



CONTENTS. 



Report. 



Appendix No. I. — Table 1. Table showing the results of performances at sea and on 

 the measured mile, of 17 vessels of the Royal Navy, of 22 vessels in the Merchant 

 Service, and of two vessels of the United States Navy, together with the particulars 

 of their machinery. 

 Table 2. Return of the results of performances of 49 vessels in the service of the 

 Messageries Imperiales of France during the year 1858. 

 Appendix No. II. — Table 1. Quarterly returns of the speed and consumption of coal 

 of the London and North- Western Company's express and cargo boats, under 

 regidated conditions of time, pressure, and expansion ; from January 1 to De- 

 cember 31, 1859. 



Table 2. Half-yearly verifications of consumption of coal of the above vessels, 



from January 1 to December 31, 1859. 

 Appendix No. III.— No. 1. Form of Log-book used by the Royal Mail Company. 

 No. 2. Form of Log-book used by the Pacific Steam Navigation Company. 

 No. 3. Form of Engineers log used by the Peninsular and Oriental Company. 

 No. 4. The Admiralty Form for recording the trial performances of Her Majesty's 



steam-vessels. 

 No. 5. Board of Trade Form of Surveyor's Return of Capabilities. 

 Appendix No. IV. — Table 1. Showing the ratio between the indicated horse-power 

 and the grate, the tube, the other heating, and total heating surfaces ; also, between 

 the grate and heating surfaces, and between the indicated horse-power and the coal 

 consumed. 

 Appendix No. V. Letter from Mr. Archbold, Engineer-in-Chief, United States Navy. 

 Description of the hull, engines, and boilers of the United States Steam Sloop 

 ' Wyoming'. 



Table 1. Return of performance of the ' Wyoming* under steam alone. 

 Table 2. Return of performance of the 'Wyoming' under steam and sail combined. 

 Table showing the trial performances of the steam-vessels 'Lima' and 'Bogota' 

 when fitted with single cylinder engines, and after being refitted with double 

 cylinder engines. Also the sea performances of the same vessels under both these 

 conditions of machinery and on the same sea service. 



Report. 



At the Meeting of the British Association, held in Aberdeen in September, 

 1859, this Committee was re-appointed in these terms : 



" That the following Members be requested to act as a Committee to con- 

 tinue the inquiry into the performance of steam-vessels, to embodv the facts 

 in the form now reported to the Association, and to report proceedings to 

 the next meeting. 



" That the attention of the Committee be also directed to the obtaining of 

 information respecting the performance of vessels under sail, with a view to 

 comparing the results of the two powers of wind and steam, in order to their 

 most effective and economical combination. 



"That the sum of £150 be placed at the disposal of the Committee for 

 these purposes." 



The following gentlemen were nominated to serve on the Committee :— 



1860 



Vice Admiral Moorsom. 



The Marquis of Stafford, M.P. 



The Earl of Caithness. 



The Lord Dufferin. 



William Fairbairn, F.R.S. 



J. Scott Russell, F.R.S. 



Admiral Paris, C.B. 



The Hon. Capt. Egerton, R.N. 



William Smith, C.E. 

 J. E. M c ConnelI, C.E. 

 Charles Atherton, C.E. 

 Professor Rankine, LL.D. 

 J. R. Napier, C.E. 

 Richard Roberts, C.E. 

 Henry Wright, Hon. See. 



