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>>>I am trying to get a clearer understanding of the >>>effect of coppering a warship had in terms of the >>>weight added by the process and the expense involved. >>>Specifically, how expensive a process was coppering, >>>what were the dimensions and thicknesses of the >>>individual plates, how much did the plates weigh? I >>>would also be interested in determining when >coppering >>>was introduced in different navies. >>> >>>Thanks, John Tredrea >> >>I should have added another question: Wasn't there >>some sort of interface applied between the copper and >>the wooden hull? If so, what kinds of material and >>what thicknesses? >> >>Thanks again. > >HMS Victory, McGowan - Alarm frigate in 1763 spent two >years in the West Indies. Problem was Galvanic action. >There followed 10 years of experimentation.In May 1780 >46 major vessels were coppered including Victory >(anchor stocks to be rounded to prevent damage to >copper). Problems finally solved six years later by >replacing all iron bolts in the vicinity of copper >sheathing with others made of an alloy that did not >react to it. There was also copper sheathing above the >waterline in way of the stern. > >Goodwin and Lavery have more information - will look >it up later. >I will also look it up in "Ship's Fastenings From Sewn >Boats to Steamship" - Michael McCarthy > >Bob Legge.

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