REGULAE SERIES 



579* Restricted. Channel Tests for the Panama Canal. Status of One-Way and 

 Two-way Traffic Studies as of 15 Jul 19^7, by C.A. Lee, C.E. Bowers, 

 and E.D. Bradley. Jul 19^7. 9 pp., 2 figs. Superseded by Report 601. 



580. Wake Survey in Way of Propeller Disk on TMB Model 4015 Representing the 



Sun Shipbuilding and Dry Dock Company Proposed Twin-Screw Passenger 

 and Trailership, by W.H. Norley. Jul 19^4-70 2 pp., 1 fig. 



Distributed only upon authorization of Sun Shipbuilding and Dry Dock Company. 



581. Theory of the Belt -Driven Torsiograph, by Alice R. Welch. Jul 19i^7. 



18 pp., 8 figs. 



582. Calculation of Flexural Critical Frequencies of Ship Hulls by Prohl's 



Method, by E.J. Adams and Alice R. Welch. Jul 19^4-7. 8 pp., 2 figs. 



583. Wake S\irvey of the Mark 13 Torpedo, by H.A Eggers, Jul 1947. 27 pp., 



16 figs. 



58^4-. Forces Measured in a Towline during Towing Tests of a Series G-k) High- 

 Speed Sled Target, by G.B. May fie Id. Aug 19^7. 6 pp. 



585. Tests of TMB Model I+03O Representing the Federal Shipbuilding and Dry 



Dock Company 600-Foot Single-Screw Tanker, by I. Goldirrxn. Jul 19^+7. 



29 pp. , 17 fiSS • Distributed only upon authorization of Federal Shipbuilding and Dry Dock 

 Company. 



586. Tests of TMB Models i(-005, i^005-l, and 4006 Representing Cox and Stevens 



160-Foot and 270-Foot Yangtze River Vessels, by M. Gertler. Jul 19^+7. 



29 PP . , 23 figs . Distributed only upon authorization of Cox and Stevens, Inc. 



587. Tensile -Strength Tests of Experimental Rigging Insulators, by J.G. 



McGinley. Sep ighf . 12 pp., 3 figs. 



588. Preliminary Report of the Tests of Models of Towing Targets, by J.H. 



Curry and Jack Posner. Aug 19^7 • 28 pp., 20 figs. Superseded by / 

 Report 595. • / 



589. Forces Measured in a Towline during Towing Tests of a Series G-60 High- 



Speed Sled Target, by J.G. McGinley. Sep 19i(-7. 7 pp. 



1-35 



