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https://en.wikipedia.org/wiki/Cooper_(profession)
It turns out that there was different types, one was a general Cooper (in link under history)
Quote extract:
' The "general" cooper worked on ships, on the docks, and in warehouses, and was responsible for cargo while in storage or transit. With a specialized skill, the general cooper could repair a broken stave without losing the contents of a cask.' unquote
Preparation of a barrel long term for storage of the barrel as the charcoal burning or charring the barrel.
http://www.popsci.com/what-happens-in-whiskey-barrel-over-half-century
This would suggest brewing
Hello dobfarm
Thank you.
Think we touched on the Ports & the Navy /Army requiring Coopers before.
The Navy and the Army, docks, food supplies (especially meat), Brewers of Ale and Distillers of Malt and Spirits, would employ Coopers and Apprentice Cooper/s.
Navy records of Ratings and the lower Ranks for this period, are by H.M. Ship and currently you either have to know the H.M. Ship/s they belonged to, or search every vessel in the Royal Navy.
Only ancestors on H.M. Ships involved in the Battle of Trafalgar are listed on TNA, Battle of Trafalgar Ancestors database.
http://www.nationalarchives.gov.uk/trafalgarancestors/advanced_search.aspI understand meat was heavily salted and sealed into barrels for voyages too, this is probably how the tin was invented, some bright spark probably thought, if we could seal food into tins, we could preserve it and open it when required.
A Cooper would be onboard too and his job was to repair barrels (after heavy seas, or if they broke loose) and apparently do barrel checks too.
They possibly assisted with emergency ship repairs and caulking joints too.
Regards Mark