What Is This Tool?
This online unit converter transforms length values from the US survey fathom (fath) to the famn, a traditional maritime unit. It is designed to assist with accurate conversions used in nautical navigation, hydrographic surveys, and maritime historical work.
How to Use This Tool?
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Enter the length value in US survey fathoms (fath).
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Select the target unit as famn.
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Click convert to get the equivalent length in famn.
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Review the result for use in nautical or hydrographic applications.
Key Features
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Converts length units between US survey fathom and famn.
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Uses exact conversion rate based on maritime standards.
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Supports maritime, hydrographic, and historical measurement contexts.
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Browser-based and easy to use without installation.
Examples
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5 fathom (US survey) [fath] converts to approximately 5.13 famn.
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10 fathom (US survey) [fath] converts to approximately 10.27 famn.
Common Use Cases
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Recording water depths and soundings on nautical charts and surveys.
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Specifying lengths of anchor cables, mooring lines, or sounding lines in maritime operations.
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Converting legacy survey data using US survey units to famn for modern or historical analysis.
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Interpreting historical maritime and coastal survey documents.
Tips & Best Practices
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Verify whether data uses US survey fathoms or international fathoms before converting.
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Use the exact conversion rate for precise maritime and hydrographic work.
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Understand the unit-specific contexts to ensure accurate depth and distance records.
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Consult historical records carefully when working with legacy measurements.
Limitations
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Conversion applies only to legacy US survey fathoms and traditional famn units.
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Slight differences exist compared to international fathoms or metric units.
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May not be suitable for high precision applications requiring metric standardization.
Frequently Asked Questions
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What is a US survey fathom?
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A US survey fathom is a length unit equal to exactly 6 US survey feet, used mainly in nautical and hydrographic contexts for measuring water depths and line lengths.
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How does famn differ from a US survey fathom?
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The famn is a traditional maritime unit equivalent to one fathom (6 feet or 1.8288 meters) which differs slightly from the US survey fathom used in hydrographic surveys.
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Why convert from fathom (US survey) to famn?
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Converting between these units helps reconcile variations in length definitions when working with historical or modern maritime data for accurate water depth and nautical measurements.
Key Terminology
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Fathom (US survey)
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A non-SI length unit equal to 6 US survey feet, used for nautical and hydrographic measurements of water depths and lines.
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Famn
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A traditional maritime length unit equal to one fathom (6 feet or 1.8288 meters), used in maritime and historical surveying.
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Conversion Rate
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The factor by which one unit is multiplied to convert it to another unit; here, 1 fathom (US survey) equals approximately 1.02665 famn.