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I read in a book on Scapa Flow that a destroyer like the Wolverine, would burn twelve tons of coal an hour when she was on full speed.
Must have been a hell of a job for the poor stokers .

Wolverine was a V+W class destroyer and was fuelled by oil. She carried 367 tons of the stuff. The last coal burning destroyer class was the Beagle class of 1909. In 1901 it was found in HMS Viper (344 tons)(Wolverine 1325 tons) the engine room staff needed was 59, 48 of whom were stokers. Each fireman would handle 18cwt of coal per hour and trimmers 30 cwt. Firemen fed the furnace and trimmers took the coal to the firemen.Even in 2 watches full speed could not be maintained for more than 4 hours.The first totally oil fired battleships were the Queen Elizabeth Class of 1912. It's all oot o a book so I might be wrong. I wisna there.