In the mnemonic 'Can Dead Men Vote Twice', what does Gyro correspond to?

Master the Navigation, Seamanship, and Shiphandling (NSS) – Officer of the Deck (OOD) Phase 2 Exam with engaging flashcards and multiple choice questions, complete with hints and explanations. Prepare comprehensively for your test!

Multiple Choice

In the mnemonic 'Can Dead Men Vote Twice', what does Gyro correspond to?

Gyro corresponds to the gyro compass, the heading reference that uses a gyroscope to provide a true heading independent of Earth’s magnetic field. The mnemonic is used to jog memory about the sources of heading error and the instruments involved: variation is the difference between true north and magnetic north, deviation is the compass error caused by the ship’s own magnetic influence, and the gyro (gyro compass) is a separate instrument that can drift but is not tied to magnetic variation. By recognizing that Gyro represents the gyro compass, you understand that this term points to the gyro heading as a distinct heading reference, which is then compared with true and magnetic headings and corrected for any gyro drift.

Gyro corresponds to the gyro compass, the heading reference that uses a gyroscope to provide a true heading independent of Earth’s magnetic field. The mnemonic is used to jog memory about the sources of heading error and the instruments involved: variation is the difference between true north and magnetic north, deviation is the compass error caused by the ship’s own magnetic influence, and the gyro (gyro compass) is a separate instrument that can drift but is not tied to magnetic variation. By recognizing that Gyro represents the gyro compass, you understand that this term points to the gyro heading as a distinct heading reference, which is then compared with true and magnetic headings and corrected for any gyro drift.

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