Nautical Chart Depth Converter | Convert Ocean Depths from Meters to Feet

Nautical Chart Depth Converter

Convert ocean depths between meters, feet, and fathoms for accurate marine navigation.

Convert from Meters to Feet

Conversion Result

Ocean depth in feet:

32.81 feet

Common conversion: 1 meter = 3.28084 feet

Convert from Feet to Meters

Conversion Result

Ocean depth in meters:

10.06 meters

Common conversion: 1 foot = 0.3048 meters

Fathoms Converter

Conversion Results

Fathoms: 10.00

Meters: 18.29

Feet: 60.00

1 fathom = 6 feet = 1.8288 meters

Recent Conversions

10 meters → 32.81 feet

Depth Visualization

0m
32.81ft
5.47 fathoms

Depth Comparisons

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Typical Ship Draft:

Container ships: 9-16 meters (30-52 feet)

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Safety Margin:

Safe navigation typically requires at least 0.5m (1.64ft) clearance

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Your Current Depth:

10m (32.81ft) is equivalent to about the height of a 3-story building

Nautical Chart Depth Conversion Guide

Understanding water depths is crucial for safe marine navigation. Nautical charts may use different units of measurement depending on the country of origin. This converter helps mariners quickly translate between the common depth units used in navigational charts worldwide.

Common Depth Units in Nautical Charts

  • Meters: Used in most international charts and those following the International Hydrographic Organization (IHO) standards.
  • Feet: Common in US coastal waters and older charts from the United Kingdom.
  • Fathoms: Traditional unit (1 fathom = 6 feet) still found on some charts, especially in areas with British maritime influence.

Reading Depth Notations on Charts

Nautical charts typically indicate which unit is being used with a note in the chart title block or legend. Some charts may use multiple units or have soundings (depth measurements) in one unit and contour lines in another. Always verify the units before navigating.

Quick Reference Conversion Table

MetersFeetFathoms
13.280.55
516.402.73
1032.815.47
2065.6210.94
50164.0427.34
100328.0854.68

Important Safety Notes

When navigating, always err on the side of caution:

  • Charts typically show depths at Mean Lower Low Water (MLLW), meaning actual depths may be higher depending on tides.
  • Always add a safety margin to account for chart inaccuracies, tidal variations, and vessel movement.
  • Remember that depth soundings on charts often represent only the surveyed points, and obstacles may exist between these points.