Sec. 513 



TYPICAL SHIP-FORM AND SHAPE DATA 



227 



and analysis of characteristics and performance 

 data for many if not all of the steamships then in 

 operation in the United Kingdom and Western 

 Europe. In 1866 a committee of the British 

 Association (for the Advancement of Science) was 

 formed to condense and to analyze the numerous 

 data. It was composed of some of the leading 

 engineers and scientists of the country, among 

 them: 



John Scott Russell, naval architect and ship 



designer 



William Fairbairn, a distinguished engineer 



versed in structural mechanics 



Thomas Hawksley, a civil engineer 

 James R. Napier, a distinguished engineer 

 W. J. M. Rankine, a teacher, scientist, hydro- 



dynamicist, and naval architect. 



The British Association Report for 1868 

 (published in 1869), pages 114-139, entitled 

 "Second Report of the Committee on the Con- 

 densation and Analysis of Tables of Steamship 

 Performance," contains some two dozen pages of 

 tabulated data for a great many steamers driven 

 by paddlewheels and screw propellers. It em- 

 bodies information on the ships, their machinery, 

 and propulsion devices. What is more, it contains 

 data worked up by Scott Russell and Professor 

 Rankine in an effort to find, by analysis, some 

 formulation which would serve as an indicator of 

 good or superior ship performance. 



Incidentally, several pages of the British 

 Association Report of 1868 are taken up with 

 recitals of the difficulties encountered in obtaining 

 accurate and correct factual data on the many 

 ships studied. The problems of the present day, 

 in this respect, are by no means new. 



A two-page "Revised Table of Analysis, 

 According to Mr. Scott Russell's Method," is 

 given on pages 332-333 of the British Association 

 Report for 1869 (published in 1870). This is 

 embodied in a "Supplement to the Second 

 Report of the Committee on the Condensation 

 and Analysis of Tables of Steamship Perform- 

 ance," to be found on pages 330-333 of the refer- 

 ence cited. The table lists 14 ships of the time, 

 4 driven by paddlewheels and 10 by screw pro- 

 pellers, mth 29 entries for each. 



In the years foUomng the 1870's, many tabula- 

 tions similar to the foregoing were published, with 

 accent on the dimensions, proportions, and other 

 characteristics rather than on the vessel's per- 

 formance. References to a number of these tables 



are listed hero for the convenience of those who 

 wish to consult the data: 



(1) John, W., "Atlantic Steamers," INA, 1887, Vol. 28; 



Table III on p. 164 gives hull data for 17 large 

 ships of that day, 14 entries for each 



(2) Wilson, T. D., "Steel Ships of the United States 



Navy," SNAME, 1893, Vol. I, pp. 116-1.39. The 

 data in this paper cover vessels in two categories: 



(a) Data on early unarmored steel vessels of the 

 U. S. Navy for the period 1883-1893. The principal 

 dimensions and general information for 2.5 vessels, 



isting 21 entries per vessel, are found on pp. 

 128-131. 



(b) Data on early armored vessels of the U. S. 

 Navy, 1874-1893. Similar data are given for 14 

 ships, with 24 entries per ship, on pp. 132-135. 



(c) Data on early special-service vessels and 

 torpedoboats, 1883-1892, 6 vessels, 21 entries 

 per vessel, pp. 1.36-1.37 



(d) Additional data on dimensions, form coeffi- 

 cients, propellers, and machinery of 14 of the 

 vessels in the foregoing three groups are to be 

 found in the folded tables opposite p. 162 of the 

 reference, 64 entries per vessel 



(e) Outboard profiles and main deck plans, 

 midship sections, machinery, shafting, and pro- 

 peller arrangements of certain of the vessels in 

 these three groups are to be found in the same 

 reference. Pis. 6 through 41. 



(3) White, Sir W. H., MNA, 1900, tables as follows: 



(a) Pages 100-101, 23 merchant steamships, 9 

 entries per ship, with emphasis on inclining-experi- 

 ment data 



(b) Pages 104-105, 19 different warships, 

 merchant ships, and yachts, 9 entries per ship, 

 with emphasis on inclining-e.xperiment data 



(c) Page 136, 9 different ships, including the 

 dispatch vessel Iris, 6 entries per ship, with 

 emphasis on metacentric stability data 



(d) Page 138, 10 .ships, all saihng vessels and 

 yachts, 6 entries per ship, with accent on meta- 

 centric stability 



(e) Page 642, 4 warships, 5 entries per ship, 

 giving L, B, H, W, and P, 



(f) Page 649, 7 ships, 5 entries per ship, with 

 accent on indicated power Pi . 



(4) Durand, W. F., EPS, 1903, pp. 415-425; hull data 



for 78 ships, 8 entries for each; propeller and trial 

 data for 84 ships, 12 entries for each 



(5) Biles, J. H., "Cross-Channel Steamers," INA, 1903, 



pp. 243-253. PI. XXXII lists hull and machinery 

 data for 45 vessels of this type, built in the era 

 1886-1903, with 24 entries for each. Pis. XXXIV-L 

 give arrangement sketches of many of these vessels. 



(6) Peabody, C. H., NA, 1904, pp. 522-553; 45 ships of 



10 types, 13 entries for each 



(7) Speakman, E. M., "Marine Steam Turbine Develop- 



ment and Design," SNAME, 1905, pp. 247-286. 

 This paper describes vessels driven by steam 

 turbines in the era 1894-1905. It gives, on PL 139, 

 principal dimensions and general information for 

 50 vessels with 18 entries per vessel. 



