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Atrywork is a furnace, used to heatblubber fromwhales for the recovery ofoil, on awhaling ship.
The trywork is locatedaft of thefore-mast, and is typically constructed of brick and attached to the deck with iron braces. Two cast-irontrypots are set atop the furnace. It is similar to therendering process for producing lard by heating or frying fatty pork. A reservoir of water under the bricks keeps the furnace from scorching the wood of the deck.
In the 18th and 19th centuryNew England whaling industry, tryworks on whaling ships allowed the vessels to stay at sea longer as it allowed them to boil out the oil during the voyage and not have to carry unprocessed blubber home. Slices of blubber were cut as thinly as possible for the process, and on New England whaling ships, these slices were known as "bible leaves" by the sailors.[1] The ability to use tryworks at sea thus enabled theYankee whaling industry to flourish.[2]