Cbief Suat, Nmal Res Establistoteat 

 c o Reel Hail Office, Halitai 

 Nova Scotia, Canada 



Prof. I_ Howartfi, Deot of Mali, Uaiv of Bristol, 

 Bristol, England 



li. J. Gerritsna, Delft Sbipbldg Lab, 

 Prof. Nekelweg. Delft, Tte Netherlands 



Di. Siegfried Schuster, Head, Berlin Model Basis 

 Versacftsanstalt fv lasserban and Schiffban, 

 Schlenseainsel in Tiergarten, Berlin 87, Geraany 



Dr. H.I. Lerbs. Dii, Haaborg Model Basis, 

 HantMiigische Schiffbai-Vetsoclisanstalt 

 Bianfeldec Str. 1S4, Haabolg 33, Geraaot 



Dii, Admiralty Experiment locks, GosnorL Hants 

 England 

 1 !ii. E.C. Tapper 



Di. V.G. Szebetely, General Electric Co. 



3198 Chestllt St, Philatfetotaa 4, Pa. 

 Prof. C.I. Prohaska, Ship Model Basin, 



Hjortekaersvej 99, Klanpeaborg, DennarK 



Di. Aldo Aodreoii, Institsto de Pesqinsas 

 Teclncolocgicas, Caiu Postal 7141, 

 Sa Paalo, Brazil 



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