312 



HYDRODYNAMICS IN SHIP DESIGN 



Sec. 56.12 



model built of steel, named the D. C. Enderl, Jr. 

 One of the first installments of the published data 

 on this project was prepared by W. P. A. van 

 Lammeren, J. D. van Manen, and A. J. W. Lap, 

 entitled "Scale-Effect Experiments on Victory 

 Ships and Models. Part I, Analysis of the Resist- 

 ance and Thrust Measurements on a Model Family 

 and on the Model Boat D. C. Endert, Jr.," INA, 

 Apr 1955, Vol. 97, pp. 167-245. 

 (10) French minesweeper Aldebaran, about 1954. The 

 report of this work was published by R. Retail 

 and S. Bindel in a paper entitled "fitude k la 

 Mer de la Resistance ^ la Marche et de la Propul- 

 sion; Rapprochement avec le Module (Sea Trials 

 to Determine Towing Resistance and Propulsion: 

 Correlation with the Model)," ATMA, 1955. These 

 trials 'involved towing the minesweeper Aldebaran 

 with the mines weeperfSiriits (a sister ship), with 



the two propellers of the Aldebaran removed and 

 dummy hubs substituted. Otherwise the append- 

 ages on both vessels were the same, comprising 

 roll-resisting keels, twin rudders, exposed twin 

 propeUer shafts, and twin supporting struts. 

 Towline tensions were measured, both on the 

 towing and on the towed vessels. Shaft torques 

 were observed by torsion meter on the towing 

 vessel but no propeller-thrust readings were taken. 

 The vessels were 140.95 ft long on the waterline, 

 with a maximum waterline beam of 27.95 ft and a 

 mean draft of about 7 ft. The displacement with 

 appendages was 380 long tons. 

 (11) Silovi6, S., and Fancev, M., "Measurements on 

 M. V. Rijeka, with their Attempted Practical 

 Application," INA Autumn meeting, 1955, in 

 Yugoslavia; abstracted in SBMEB. Apr 1956, pp. 

 264-266. 



