Which statements describe Dead Reckoning (DR)?

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Multiple Choice

Which statements describe Dead Reckoning (DR)?

Dead reckoning estimates the ship’s current position by starting from a known fix and advancing that position using the ship’s own motion data. The essential inputs are heading (the direction you steer) and speed, applied over the elapsed time. By multiplying speed by the time and moving that distance along the given heading from the last known position, you obtain the new estimated position. This method does not rely on celestial sightings, GNSS fixes, or wind data alone—the latter can affect drift and accuracy, but the calculation itself is based on heading, speed, and time.

Dead reckoning estimates the ship’s current position by starting from a known fix and advancing that position using the ship’s own motion data. The essential inputs are heading (the direction you steer) and speed, applied over the elapsed time. By multiplying speed by the time and moving that distance along the given heading from the last known position, you obtain the new estimated position. This method does not rely on celestial sightings, GNSS fixes, or wind data alone—the latter can affect drift and accuracy, but the calculation itself is based on heading, speed, and time.

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