Converter
water-depth measurement result · Hydrography/navigation · Historical-modern
sounding
approx.reference-only
- Record
- M672
- Definition quality
- Approximate
- Conversion mode
- reference only
- Calculator
- Reference only
Definition
A sounding is a measured water depth shown on a nautical chart; the chart specifies the depth unit and vertical reference.
History & use
NOAA says nautical-chart soundings are acquired by hydrographic surveys and may be expressed in feet or fathoms on relevant charts.
Modern use
Modern use is context-dependent and varies by region or measurement system.