664 



HYDRODYNAMICS IN SHIP DESIGN 



Sec. 72.6 



Topmost Porlion ,ol Hull Not Shown 24( WL 



Fig. 72.D Body Plan of Lake Erie Steamer 

 Greater Detroit 



Kirby in conjunction with H. C. Sadler [SNAME, 

 1925, pp. 101-108 and Pis. 64-83]. Fig. 72.D is a 

 body plan of this vessel, adapted from the refer- 

 ence. Earlier vessels of this general type are 

 described and illustrated elsewhere [SNAME, HT, 

 1943, pp. 377-378, 382]. 



Some dimensions and form data on these 

 vessels, unfortunately not complete and not too 

 rehable because of conflicting published figures, 

 are given in Table 72. b. Additional data on some 

 of these vessels, pertaining principally to their 

 feathering paddlewheels, is given by E. M. Bragg 

 [SNAME, 1916, PL 90]. 



Steam navigation on Long Island Sound, in the 

 period from 1850 to 1910, resulted in the develop- 

 ment of fast vessels driven by side paddlewheels, 



resembhng the general design of the Greater 

 Detroit [SNAME, HT, 1943, pp. 97-134]. How- 

 ever, although they were of relatively shallow 

 draft, these vessels appear not to have been 

 designed to run in particularly shallow water. 

 They are not further described here as having 

 design features useful for shallow-water craft. 



The design of shallow-water vessels for inland 

 waterways in Europe is discussed by G. Lauter- 

 bach in "Schiffbautechnisches Handbuch (Ship- 

 building and Ship Design Handbook)," Berlin, 

 1952, pages 613-635. 



Possibly because high-speed vessels built for 

 service in confined waters have been considered 

 as specialized craft, factual data on the hulls of 

 these and other ships are rather hard to find in 

 the technical hterature. For large vessels at 

 least, pages printed nearly a century ago contain 

 much more information than those of recent 

 years. One outstanding article in the latter 

 category treats largely of the machinery and 

 speaks only briefly of the hull [SNAME, HT, 

 1943, pp. 97-134]. Most of the published data 

 are lacking the customary huU coefficients, or the 

 essential information by which these data can 

 be calculated. If the length is given the displace- 

 ment may not be, and vice versa. 



TABLE 72.b Dimensions and Form Data for American River Steamers of the Period 1870-1940 

 All the vessels in this table were driven by side paddlewheels. 



