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maxlinuin bubble radius above the sea bed; this means that 

 the mines should be moored approximately 20 ft. above the 

 sea bedo More precisely, for water of given depth and for a 

 mine of given weight of explosive, there is a definite opti- 

 mum location for the detonation, that location being given 

 by the principle of stabilization. 



Of course, such a statement makes sense only if, at 

 the outset, the position of the mine Is restricted to a 

 place deep under water, i.e., fairly distant from the target. 



Similar problems concerning the optimal position of 

 an explosion also occtir for charges nearer the surface, and 

 for charges dropped from fast flying planes and thus having 

 an initial horizontal and vertical momentum at the instant 

 of the detonation. The discussion of such questions is 

 planned for later reports. 



Richard Courant 

 Contractor's Technical Representative 



