3 



Hydro dynamic Design of an S Semisubmevged Ship 



SUMMARY 



A considerable number of model tests, theoretical studies, 

 and design studies have been conducted on the S 3 concept. The 

 results show that the S 3 is highly stable and seaworthy (both at 

 rest and underway), more efficient at higher speeds than conven- 

 tional ships, and will provide a near -level ride if automatically 

 controlled in high sea states. Also, many advantages result from 

 its unusual hull form for various kinds of military and non-military 

 applications. 



REFERENCES 



LANG, T. G. , "S 3 New Type of High-Performance Semi- 

 submerged Ship", American Society of Mechanical Engineers, 

 Paper No. 71-WA/UnT-l, Winter Annual Meeting, Nov 28 - 

 Dec 2, 1971. 



LEOPOLD, R. , "A New Hull Form for High-Speed Volume - 

 Limited Displacement-Type Ships", Society of Naval Archi- 

 tects and Marine Engineers, Paper No. 8, Spring Meeting, 

 May 21 - 24, 1969. 



STEVENS, R. M. , "New Dimensions in Naval Catamarans", 

 American Society of Naval Engineers, ASNE Day Meeting, 

 May 4-5, 1972. 



CHAPMAN, R. B. , "Spray Drag of Surface -Piercing Struts", 

 Naval Undersea Research and Development Center, TP-251, 

 Sep 1971. 



SIBUL, O. J. , "Ship Resistance in Uniform Waves", Insti- 

 tute of Engineering Research, University of California, 

 Berkeley, California, Report No. NA-64-1, Jan 1964. 

 AD / 606272. 



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