Sec. 51.7 



TYPICAL SHIP FORM AND SHAPE DATA 



231 



several references to diagrams by which section- 

 area curves for new ship designs can be drawn, 

 corresponding to selected form coefficients or 

 parameters: 



(1) Gertler, M., "A Reanalysis of the Original Test Data 



for the Taylor Standard Series," TMB Rep. 806, 

 Mar 1954, Gov't. Print. Off., Washington. The data 

 mentioned in the preceding paragraph are found on 

 pp. 2-6 of this report. In addition, on pp. 6-8 there 

 are graphs, tables, and instructions bj' which any 

 section-area curve belonging to the family of the 

 Taylor Standard Series can be reproduced mathe- 

 matically. 



(2) Bates, J. L., "Shipbuilding Encyclopedia," 1920, 



Figs. 26, 27 



(3) Vincent, S. A., "Merchant Vessel Lines," MESA, Mar 



1930, p. 138. These have since been improved upon 

 but no published or unpublished revision is available. 



(4) Schiffbau Kalender, 1935, p. 160 



(5) Van Lammeren, W. P. A., Troost, L., and Koning, 



J. G., 

 Ships," 



"Resistance, Propulsion, and Steering of 

 1948, pp. 92-93. 



The SNAME Resistance Data sheets, one of 

 which is illustrated in Fig. 78. Ja of Sec. 78.16 of 

 Part 4, contain section-area curves, area ratios 

 A/Ax , and values of dA/dL for the models of 

 some 160 typical ships of many classes. 



51.7 "Standard" Body Plans. At various 

 times so-called "standard" body plans have been 

 used for reference and comparison purposes. Some 

 of these were drawn with fixed proportions, in 

 which the maximum (or midsection) waterline 

 beam was always twice the draft. All underwater 

 and abovewater sections were distorted to comply 

 with this proportion. Each half-beam and the 

 whole draft were divided into ten equal spaces. 

 Thus the "standard" offsets or heights for a given 

 position on one ship could be compared with 



TABLE 51.d — Reference Data on Amount and Position op Parallel Designed Waterline 



