sentences:  After the failure of corrosion inhibition efforts, the ultimate solution was to re-coat the areas with cadmium or phenolic resin (Heresite).The Battle of Vella Gulf on the night of August 6–7, 1943, was the first in which a surprise torpedo attack by U.S. gave the Americans an overwhelming advantage in the following gun battle, though one Japanese warship was hit by a dud torpedo and escaped.By September 1943, effective methods of torpedo deployment were beginning to be distributed to all U.S. destroyers.