change in volume sufficient to reduce the buoyancy by 40 pounds. For the spheres in shallower water, a 

 proportional buoyancy adjustment was made. 



It was estimated that the maximum error in the net positive buoyancy values was ±50 pounds. In 

 terms of chain links (2-1/4-inch chain), the error was ±1.5 links; or in terms of seawater intake, the error 

 was ±0.8 cu ft. 



The error associated with permeability reading between inspections is ±20 pounds, or ±0.3 cu ft. 



32 



