SUNWARY 



This paper discussed the potentials and limitations of liquid and 

 solid buoyancy materials studied or evaluated by the U. S. Naval Applied 

 Science Laboratory. The development and properties of NASL ML-B3 and 

 other syntactic foams were given. The NASL Deep Submergence Facilities 

 were illustrated and the procedures used to evaluate the properties of 

 the syntactic foam were described. All the information developed at the 

 Laboratory indicates that the NASL ML-B3 type of syntactic foam is suit- 

 able buoyaiicy material for underwater use if the hydrostatic pressure does 

 not exceed 10,000 psi. Significant material developments forecast for the 

 next few years were also described. 



REFERENCES 



(1) Bukzin, E. A. and Resnick, I., Buoyancy Materials from NRL Report 

 6167. Status and Projections of Developments in Hull Structural 

 Materials for Deep Ocean Vehicles and Fixed Bottom Installations. 

 Edited by W. S. Pillini. U. S. Naval Research Laboratory - Nov 4, 

 1964 



(2) Report on the Develppment of Buoyancy Materials for Deep Sub- 

 mergence. NAVAPLSCIENLAB Project 6411-1, Technical Memorandum #1 

 of 17 Oct 1963 



(3) Resnick, I. and Macander, A. Report on the Development of Buoyancy 

 Materials for Deep Submergence. NAVAPLSCIENLAB Project 6411-1, 

 Technical Memorandum #2 of 13 Jul 1964 



(4) Resnick, I. and Macander, A. Report on the Development of Buoyancy 

 Materials for Deep Submergence. NAVAPLSCIENLAB Project 6411-1, 

 Technical Memorandum #3 (in preparation) 



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