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- Apprentice Mate Steersman (Oceans or Near Coastal (Any Appropriate Tonnage)) »
- Q413 - Navigation General: Oceans
209. What does the term «tide» refer to?
Tides are the periodic vertical rise and fall of water level, primarily caused by the gravitational pull of the moon and sun. Therefore, the correct answer is vertical movement of the water; horizontal movement is termed tidal current, and salinity or mixing are unrelated concepts.
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