Question: Provide another name for a structure that provides ventilation for hot flue gases, or smoke from a boiler, stove, furnace or fireplace to the outside atmosphere, used in relation to boats rather than buildings, an example being the paddlewheel steamboat known as the Lexington which sank due to an onboard fire when the structure caught fire igniting 150 bales of cotton?
Sentence (from "Lexington (steamship)"): The Lexington was a paddlewheel steamboat that operated along the Atlantic coast of the Northeastern United States between 1835 and 1840, before sinking in January 1840 due to an onboard fire.
Relevant evidence: Yes