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marine depth sounder
Apr. 19, 2024
A marine depth sounder is an instrument that can measure the depth of water under a ship. It uses the reflection principle of sound waves to calculate the water depth by transmitting and receiving sound waves.
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nautical sextant
Apr. 17, 2024
A nautical sextant is a handheld optical instrument used to measure the height of a celestial body or the angle between two targets. It can help a ship determine its own or target's direction, as well as its relative position to other ships or objects.
Azimuth circle ranging
Apr. 15, 2024
The basic principle of using the azimuth circle to measure the distance between targets is to use the cosine theorem of the triangle to calculate the distance between the two targets based on the radius of the azimuth circle, the azimuth angles of the two targets and the angle between the two targets
purpose of bearing circle
Apr. 12, 2024
A bearing circle is an instrument used to measure or indicate the azimuth angle, which can assist ships in determining the direction of themselves or targets, as well as their relative positions to other ships or objects.
marine barometer use
Apr. 10, 2024
A marine barometer is an instrument used to measure atmospheric pressure, which can assist ships in predicting weather changes, avoiding risks, selecting appropriate routes, and enhancing the safety and efficiency of navigation.
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Latest Post
A marine depth sounder is an instrument that can measure the depth of water under a ship....
A nautical sextant is a handheld optical instrument used to measure the height of a celes...
The basic principle of using the azimuth circle to measure the distance between targets i...
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