UNDER-WATER CORROSION ON USS FISKE (DD-842)
NAVAL APPLIED SCIENCE LAB BROOKLYN NY
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The last complete overhaul of the USS FISKE, DD-842 was made in May 1962 at the Charleston Naval Shipyard. The ship was in warm waters for the greater part of the time prior to docking at the New York Naval Shipyard. Principal hull corrosion was found at stern areas and bilge keel vicinity. The ship was initially equipped with thirty two zinc anodes at the stern. Of these, nineteen remained, but were heavily encrusted with corrosion products. Paint had stripped in areas immediately adjacent to the zincs, but in most cases rust was not evident. Paint was not evident on about 23 of the rudder area. The greatest extent of rudder corrosion was found in the vicinity of the aft end of the rudder skegs both inboard and outboard pits and striations up to 316- inch were observed. Paint was virtually absent in these areas. Under side of port and starboard propeller rope guards were severely corroded, with four bolts missing as a result of corrosion. Corrosion in the vicinity of the starboard bilge keel is shown.
- Properties of Metals and Alloys
- Marine Engineering