Which instrument measures wind speed at sea?

Prepare for the Boatswain’s Mate Chief (BMC) SWE Exam with in-depth study materials and multiple-choice questions. Enhance your understanding with well-explained hints and explanations. Ready yourself to excel!

Multiple Choice

Which instrument measures wind speed at sea?

Explanation:
Measuring wind speed relies on a device that translates moving air into a readable rate. An anemometer is built for this purpose; its cups or a small propeller catch the wind and cause rotation. The faster it turns, the higher the wind speed. Different forms exist, like cup or vane types, but the core idea is the same: convert wind motion into a measurable speed. This is distinct from a barometer, which measures atmospheric pressure; a thermometer, which measures temperature; and a hygrometer, which measures humidity. On a ship, knowing wind speed is essential for sail handling, performance planning, and safety.

Measuring wind speed relies on a device that translates moving air into a readable rate. An anemometer is built for this purpose; its cups or a small propeller catch the wind and cause rotation. The faster it turns, the higher the wind speed. Different forms exist, like cup or vane types, but the core idea is the same: convert wind motion into a measurable speed. This is distinct from a barometer, which measures atmospheric pressure; a thermometer, which measures temperature; and a hygrometer, which measures humidity. On a ship, knowing wind speed is essential for sail handling, performance planning, and safety.

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