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Charted depth
The vertical distance, in the direction of gravity, as determined by echo sounding, from the tidal datum to the sea bottom, using an assumed speed of sound of 800 fathoms (4800 feet) per second and making no corrections for actual speed or actual path of the sound ray.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Earth science
- Category: Mapping science
- Company: American Congress on Surveying & Mapping
- Product:
- Acronym-Abbreviation:
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