866 



HYDRODYNAMICS IN SHIP DESIGN 



Sec. 77.41 



(20) "Tests of Twenty Related IModels of V-Bottom 



Motor Boats, EMB Series 50," TMB Rep. R-47, 

 Revised Edition, Mar 1949. This report was origin- 

 ally number 170 in the ETT series, issued on 28 

 Oct 1941, under the authorship of K. S. M. David- 

 son and A. Suarez. Unfortunatelj', the parent form 

 chosen for this series has a chine that is considered 

 too low forward, by modern standards. There are 

 indications that the observed resistances are too 

 low, because of laminar flow on many of the models. 

 The data are plotted as contours of total model 

 resistance per lb of displacement, or Rt/W, as 

 contours of running trim angle in deg of model 

 wetted surface, and of other factors. 



(21) Locke, F. W. S., Jr., "An Empirical Study of Low 



Aspect Ratio Lifting Surfaces with Particular 

 Regard to Planing Craft," Jour. Aero. Sci., Mar 

 1949, Vol. 16, No. 3, pp. 184-188 



(22) Ashton, R., "Effect of Spray Strips on Various Power- 



Boat Designs," ETT, Stevens, Tech. Memo. 99, 

 Feb 1949. This report is generously illustrated with 

 excellent photographs of both models and full-scale 

 motorboats, showing the spray formations very 

 clearly. The appendix contains useful design com- 

 ments, with sketches — a rather unusual feature for 

 a report of this kind. 



(23) Korvin-Kroukovsky, B. V., Savitsky, D., and Leh- 



man, W. F., "Wetted Area and Center of Pressure 

 of Planing Surfaces," ETT, Stevens, Rep. 360, 

 Aug" 1949. This is the Sherman M. Fairchild 

 Publication Fund Paper 229, issued b)^ the Inst. 

 Aero. Sci., New York, N. Y. 



(24) Du Cane, P., "High-Speed Small Craft," Cornell 



Maritime Press, 1950. This book embodies, in 21 

 chapters, informative comment and design data on 

 hulls, machinery, equipment, operation, and trials, 

 in the size range up to 130 ft in length and in the 

 speed range above 15 kt. 



(25) Herreshoff, L. Francis, "N. G. Herreshoff and Some 



of the Boats He Designed," The Rudder. This 

 comprises a series of articles, subdivided into about 

 12 chapters, which ran more or less regularly 

 through the years 1949 and 1950. 



(26) Spooner, C. W., Jr., "Speed and Power of Motor- 



Boats up to a Speed-Length Ratio of Three," 

 unpubl. manuscript dated Oct 1950; available in 

 the TMB library 



(27) Murray, A. B., "The Hydrodynamics of Planing 



Hulls," SNAME, 1950, pp. 658-692. This is a most 

 informative and useful paper for the practical naval 

 architect. There is a bibliography of 19 items on 

 p. 680. 



(28) Clement, E. P., "The Analysis of Stepless Planing 



Hulls," SNAME, dies. Sect., 3 May 1951 



(29) Baader, J., "Cruceros y Lanohas Velooes; Su Dina- 



mica. Propulsion y Navegacion (Cruisers and Fast 

 Launches; Their Hydrodynamics, Propulsion, and 

 Operation)," Buenos Aires, 1951 (in Spanish). This 

 appears to be by far the most comprehensive book 

 on the subject of motorboats and sailing craft, of 

 small to moderate size, that has ever been pub- 

 lished. It includes a considerable amount of 

 information on naval architecture in general and 

 some data on hydrodynamics in particular. It is 



generously illustrated, with drawings and graphs 

 that are nothing less than superb. 



(30) Latimer, J. P., "Characteristics of Coast Guard 



Powered Boats," SNAME, Ches. Sect., 13 Oct 



1951. Abstracted in SNAME Member's Bull., Jan 



1952, p. 18. This paper describes and gives draw- 

 ings and photographs of a rather wide variety of 

 sizes and types of motorboats, from 18 to 52 ft in 

 length. Most of the paper is devoted to a description 

 of the USCG 40-ft utility boat, embodying three 

 vai'iations. 



(31) Nordstrom, H. F., "Some Tests with Models of 



Small Vessels," SSPA Rep. 19, 1951 (in English). 

 Data are given, with body plans and graphs, 

 embodying test results on 27 different models of 

 round-bottom and V-bottom boats (with chines). 

 On pages 15 and 16 the report gives data as to 

 the resistance of appendages and the probable 

 values of propulsive coefficient. 



(32) Simpson, D. S., "Small Craft, Construction and 



Design," SNAME, 1951, pp. 554-582. This paper 

 is devoted mostly to the larger craft in the small- 

 vessel group, although many of the excellent 

 design comments in it apply to the motorboat 

 group as well. 



(33) Savitsky, D., "Wetted Length and Center of Pres- 



sure of Vee-Step Planing Surfaces," Inst. Aero. 

 Sci., Sep 1951, S. M. F. Fund Paper No. FF-6. 

 This report also carries ETT, Stevens, number 378. 

 It lists 24 references on pp. 25-27. 



(34) Grenfell, T., "Some Notes on Steering of High-Speed 



Planing Hulls," SNAME, Pac. Northwest Sect., 

 27 Sep 1952; abstracted in SNAME Member's 

 Bull, Jan 1953, p. 35 



(35) Phillips-Birt, D., "Motor Yacht and Boat Design," 



W. and J. MacKay and Co., Ltd., Chatham, 

 England, 1953. A splendid addition to the scant 

 literature on the problems and compromises of 

 power boat design. There are chapters on size, 

 speed, behavior, accommodation, appearance, sta- 

 bility, construction, hull form, powering, propellers, 

 planing boats, and examples in design. American 

 distributor, J. de Graff, Inc., 64 W. 23rd St., New 

 York 10, N. Y. 



(36) Phillips-Birt, D., "The Design of Small Power Craft; 



Design Problems to be Solved by the Naval 

 Architect," The Motor Boat and Yachting, London, 

 Apr 1953, pp. 158-162. This excellent article, like 

 all the papers and books of this author, gives an 

 incredible amount of general information in a 

 small space. This reference covers, in addition to 

 general comments, the following: 



Design requirements 



Speed and power 



Power and hull proportions 



Hull form 



Principles of engine installation 



Seaworthiness and stability. 



(37) Tomalin, P. G., "Marine Engineering as Applied to 



Small Vessels," SNAME, 1953, pp. 590-634. This 

 paper gives a number of nomograms and other 

 data useful for the designer of small craft. 



(38) "Boats Today," Universal Motor Company, con- 



