378 



HYDRODYNAMICS IN SHIP DESIGN 



Sec. 60.12 



10 II 12 15 14 



Speed, Kt 



Fig. 60.R Self-Propblled Model Test Curves 

 FOR A Great Lakes Orb Carrier 



model data include all the derived curves for each 



design. 

 (j) German M. S. Ban Francisco [SNAME, 1936, Fig. 2 



on p. 200; also SNAME, 1951, Fig. 10 on p. 140] 

 (k) Great Lakes bulk freighter Wilfred Sykes, in both 



full-load and ballast conditions [SNAME, Figs. 6 



and 7, p. 75 and Figs. 8 and 9, p. 76]. 



II. Twin-Screw Vessels 



(a) Armored cruisers, U. S. S. Washington class (old). 



Complete towing and self-propulsion data on three 

 geosims published in SNAME, 1932, pp. 75-148, 

 esp. pp. 93-96 and 99. 



(b) Pacific liners Mariposa and Monterey. The published 



data include curves of model-test results for shaft 

 power, effective power, propulsive coefficient, and 

 rate of rotation, plus oil consumption per shaft 

 horse per hour. Supplementing these curves are 

 spots derived from the ship-trial data [SNAME, 

 1932, p. 349]. 



(c) New Panama class of passenger and cargo ships. The 



published data include results of towing and self- 

 propelled model tests and open-water propeller 

 curves. TMB model 3509 represents the ship and 

 TMB models 1765 and 1766 the propellers. Full 

 data are given, including the form coefficients 

 [MESR, May 1939, pp. 210-211]. 



(c) Ten models of tanker hulls of somewhat varied shape 



but designed to meet the same basic specifications 

 [Couch, R. B., and St. Denis, M., SNAME, 1948, 

 pp. 360-379] 



(d) U. S. Maritime Administration prototype ship 



Schuyler Otis Bland, curves of Ps , rpm, and vp = 

 ehp/shp only [Sullivan, E. K., and Scarborough, 

 W. G., SNAME, 1952, Fig. 1, p. 472]. A more 

 complete set of curves is given in SNAME, 1954, 

 p. 155. 



(e) TMB Series 60, embodying five parent forms of mer- 



chant vessels having block coefficients of 0.60, 0.65, 

 0.70, 0.75, and 0.80 [Hadler, J. B., Stuntz, G. R., 

 Jr., and Pien, P. C, SNAME, 1954, pp. 121-178] 



(f) Mariner class, speed and power curves from corrected 



trial data [SNAME, 1953, Fig. 6(a) on p. Ill]; 

 standardization trial data for two displacements, 

 shaft power and rpm [SNAME, 1953, Fig. 31 on 

 p. 148] 



(g) Tanker Pennsylvania [SNAME, 1954, Fig. 21, pp. 



156-157] 



(h) Proposed coasters [SSPA Rep. 24, 1953, p. 43]. De- 

 signed speed 11 kt; to be achieved with either of 

 two propellers, running at 175 and 360 rpm. In- 

 cludes ship body plans and propeller drawings. 



(i) Ten tug designs of a rather wide range of sizes and 

 characteristics, from a 42-ft harbor tug to a 155-ft 

 oceangoing tug [Roach, C. D., "Tugboat Design," 

 SNAME, 1954, Figs. 6 through 15, pp. 600-618). 

 The hull lines are given but the propeller drawings 

 are missing. The predictions from the self-propelled 



9 10 II 12 13 14 15 16 

 Ship Speed, kt 



Fig. 60.S Self-Propelled Model Test Curves 

 for a Steam-Driven Concrete Ship 



