A compass deviation survey determines the amount of magnetic deviation in a compass under shipboard conditions. Conducted by qualified compass adjusters, the survey includes multiple heading checks and is often followed by a deviation card. In India, these surveys are done before sea trials or after structural modifications to a vessel.
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Compass correction in India is a technical process performed to eliminate deviation caused by a ship’s magnetic influences. Trained compass adjusters conduct the correction by swinging the vessel and adjusting corrector magnets or compensators. This process is essential to ensure navigational accuracy. Indian marine authorities mandate compass correction as part of safety compliance for seagoing […]