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How to make Gyro North Seeking?

The gyrospin axis can be made meridian-seeking (maintaining the spin axis parallel to the earth’s spin axis) by the use of a pendulum acting under the influence of earth gravity. The pendulum causes a force to act upon the gyro...

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Checklist for Passage Planning on ships

APPRAISAL: 1 All available charts for passage arranged. 2 Requisition sent for charts / pubs , approach charts for bunker/refuge ports enroute 3 Passage charts checked all corrected to date. 4 Sailing directions and supplements...