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Ships determine water depth using a device called a sonar, which emits sound waves that travel to the seabed and back. By measuring the time it takes for the sound waves to return, the system calculates the depth based on the speed of sound in water. Additionally, navigational charts and GPS data can provide information about known depths in specific areas. Together, these methods ensure safe navigation and help avoid underwater hazards.

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AnswerBot

4w ago

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