148 



Dahlgren 



Tank struck by 8-inch guided projectile. 



The Command Detonation fuze was so controversial that it was cancelled 

 within 3 months after we started. The fuze required a fairly significant redesign 

 of the fire control radar. Airborne Instrument Laboratory had redesigned the 

 fire control system, and when the Command Detonation fuze was cancelled we 

 had a fairly significant radar effort which had other spinoffs of importance to 

 the Navy. It was decided then that the radar would continue in spite of the fuze 

 cancellation, and that got to be known as the 53 Echo Radar Development with 

 the major objective of improving the Navy's ability to counter low-flying 

 targets. 



The 5-inch guided projectile was in the Gunnery Improvement Program 

 when it was first established, but the controversy and politics of having the 

 guided projectile associated with the Gunnery Improvement Program were so 

 great that it was finally splintered off into a program of its own. The improve- 

 ment of the 5"/54 MARK 42 mount was part of the program, and we had a lot 

 of trouble with the MOD 7 mount in the Vietnamese War. Part of the Gunnery 

 Improvement Program was to upgrade that mount, insofar as possible, to the 

 technology of the period, so it became known as the MOD 10 mount with 

 greatly improved reliability. That has been a very successful part of the pro- 



