Nautical Term: Umbrella

Definition of Umbrella

An umbrella, in the nautical context, is a metal shield designed to resemble an inverted umbrella or a trumpet of a cone, affixed to the outer casing of a smokestack’s air vent to protect it from harsh weather conditions.

For instance, during a storm at sea, a captain would deploy an umbrella on his ship’s smokestack to shield it from the heavy rain and strong winds, ensuring the engine keeps running smoothly.

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