ON STEAMSHIP PERFORMANCE. 289 
_ nished; also to those who are at present engaged in recording the per- 
_ formance of Her Majesty’s ships at sea, especially to the Royal Naval 
_ Engineers,—than whom a more thoroughly practical, highly intelligent, 
_ and yaluable body of scientific officers does not exist in this or any other 
 country,—for the assistance they have so readily afforded. 
To the yarious Steamship Companies and Steamship Owners, and their 
Managers and Engineers, who have supplied returns. 
The Meetings of your Committee during the year have been held at Stafford 
ouse, through the kindness of his Grace the Duke of Sutherland, and have 
fully attended. 
thanks of the Association are again due to Mr. W. Smith, C.E., for 
uable aid. His offices have also been freely at the service of the 
tee. 
conclusion, your Committee believe that their labours have already been 
ductive of considerable advantage, that the objects with which they were 
jointed are being rapidly attained, and that, by continuing their labours, 
machinery they have succeeded, after considerable trouble, in organizing 
e productive of the utmost benefit to those engaged in steam navigation, 
i they have reason to believe that the future collection of the returns will 
& comparatively easy task. 
(Signed) SUTHERLAND, 
Chairman, 
_ _ Offices of the Committee, 
bury Street, Strand, London, W.C. 
ABLE 25.—WNotes on thé North German Lloyd Company’s Steamship 
> and her Performances on Trial, November 1st and 2nd, 1861*, 
ed by Messrs. Caird and Oo., of Greenock. 
sions, fc.—Length on load water-line, 330 ft.; beam, 42 ft.; depth, 
in. (four decks). Displacement at 202 ft. draught of water, 4400 tons, 
section at 204 do, =692 sq. ft. 
s.—The cylinders are 80 in. diameter; stroke, 42 in. 
Condenser—Has brass tubes 1 in. external diameter, with a 
surface of 6568 square feet. 
ater Pumps for supplying Condenser with Sea Water.—Two double- 
izontal pumps, 21 in. diameter, and a stroke of 18 in., which can be 
dto24in. It being found that this capacity of pump supplied too much 
ight holes, 13 diameter, were bored through each pump-piston. On 
trial, there was still sufficient water, and the pumps worked much 
without any noise. The sea-water was forced through the brass 
m condenser, and the steam was condensed on the external surface of 
ers.—There are sixteen furnaces in the four main boilers, with a grate 
face of 350 square feet, and a total heating surface of 9400 square feet. 
duxihary Boiler.—There are two furnaces, with a grate surface of 25 
feet, and a heating surface of 460 square feet (not in use on trial- 
uperheater has a heating surface of 2000 square feet. 
 resswre.—Safety-valveswere loaded to a pressure of 30 lbs. per square inch. 
he Propeller is three-bladed, 17 ft. diameter, with an increasing pitch 
ying from 29 to 32 ft. 
Lrip—On the 1st November, 1861, the ‘Hansa’ was tried be- 
862 * The indicator diagrams of this vessel will be found in the Appendix. 
L562, U 
