Unclassified 



Security Classification 



DOCUMENT CONTROL DATA - R&D 



(Security clataHlcallon ol title, body ol abstract and indexing annotation muat be entered when the 



I ORIGINATIN G ACTIVITY (Corporate author) 



U. S. Naval Civil Engineering Laboratory 

 Port Hueneme, California 93041 



2a. REPORT SECURITY CLASSIFICATION 



Unclassified 



2b GROUP 



3 REPORT TITLE 



Mechanics of Raising and Lowering Heavy Loads in the Deep Ocean: Cable and 

 Pay load Dynamics 



4. DESCRIPTIVE NOTES (Type of report and Inclusive dales) 



Not Final 1 November 1964-15 August 1965 



S- AinHOR(S) (Last name, first name, initial) 



Holmes, P., Ph D 



6. REPO RT DATE 



April 1966 



7a TOTAL NO. OF PAGES 



87 



7b. NO OF REFS 

 11 



8a. CONTRACT OR GRANT NO. 



6. PROJECT NO. 



Y-F015-01 -01 -001(b) 



9a. ORIGINATOR'S REPORT NUMBERCS; 



TR-433 



9b. OTHER REPORT NO(S) (Any other numbera that may be meslaned 



10. A V A I LABILITY/LIMITATION NOTICES 



Distribution of this document is unlimited. 



II SUPPLEMENTARY NOTES 



12. SPONSORING MILITARY ACTIVITY 



BUDOCKS 



13. ABSTRACT 



Based on a theoretical analysis of the cable and payload dynamics during 

 lowering or raising heavy loads in the deep ocean given in Project Trident Technical 

 Report No. 1370863, further calculations of the maximum dynamic stresses expected 

 in the lowering coble are presented covering a wide range of cable and payload 

 parameters. The theoretical analysis is adapted to a proposed design procedure, and 

 two typical design examples are given, the results of which are discussed in terms of 

 the safety of the lowering or raising operations. 



In order to make the design procedure applicable with a greater degree of 

 confidence, it is considered necessary to make measurements of cable tensions and 

 load and ship motions during a full-scale operation to fill in deficiencies of data 

 and provide a basis for verification of theory and calculations. In particular, data 

 are needed on the coefficients of drag and mass, which at this stage must of necessity 

 be estimates. 



DD 



U473 



0101-H07-K800 



Unclassified 



Security Classification 



