What is a US survey fathom?

The US survey fathom is a non-SI length unit equal to exactly 6 US survey feet, commonly used in nautical and hydrographic measurements.

What is a chain unit?

A chain is a traditional surveying unit of length equal to 66 feet, widely used in land surveying, especially for cadastral measurements.

Why convert fathoms to chains?

Converting fathoms to chains helps reconcile maritime survey data with land surveying records and supports cadastral and GIS applications.

How to Convert from Fathom (US survey) [fath] to Chain [ch]

Learn how to convert length measurements from the US survey fathom to the traditional chain unit, commonly used in hydrographic and land surveying contexts.

Fathom (US survey) [fath]

Chain [ch]

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Fathom (US survey) [fath] to Chain [ch] Conversion Table

Fathom (US survey) [fath]	Chain [ch]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Fathom (US survey) [fath] to Chain [ch] Conversion Table
Fathom (US survey) [fath]	Chain [ch]

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What Is This Tool?

This is an online unit converter that transforms length measurements from the US survey fathom (fath) to the chain (ch), aiding in the interpretation of nautical, hydrographic, and land surveying data.

How to Use This Tool?

Enter the length value in US survey fathoms you wish to convert.
Select the source unit as fathom (US survey) and the target unit as chain.
Initiate the conversion to receive the equivalent length in chains.

Key Features

Converts length from US survey fathom to chain using an exact conversion rate.
Supports usage in maritime and cadastral surveying applications.
Browser-based and easy to use for translating historical or legacy measurement data.

Examples

10 fathoms (US survey) equals approximately 0.909092727 chains.
50 fathoms (US survey) converts to about 4.545463635 chains.

Common Use Cases

Recording and converting water depths and line lengths in nautical and hydrographic surveys.
Translating maritime measurements into units suitable for land cadastral surveying.
Reconciling and updating legacy survey data for GIS and land registration applications.

Tips & Best Practices

Always verify the unit type to ensure conversion uses US survey fathom and not international fathom.
Use this conversion to align maritime survey data with cadastral and land surveying units.
Be cautious of potential minor discrepancies due to differences between US survey and international units.

Limitations

The US survey fathom slightly differs from the international fathom, which may cause small inconsistencies.
Both units are historical and non-SI, requiring careful conversion when integrating with modern metric systems.
Conversion accuracy can be affected by rounding and legacy measurement variations.

Frequently Asked Questions

What is a US survey fathom?: The US survey fathom is a non-SI length unit equal to exactly 6 US survey feet, commonly used in nautical and hydrographic measurements.
What is a chain unit?: A chain is a traditional surveying unit of length equal to 66 feet, widely used in land surveying, especially for cadastral measurements.
Why convert fathoms to chains?: Converting fathoms to chains helps reconcile maritime survey data with land surveying records and supports cadastral and GIS applications.

Key Terminology

US survey fathom: A non-SI unit of length equal to 6 US survey feet, used for nautical and hydrographic measurements.
Chain: A traditional surveying length unit equal to 66 feet, commonly used in land and cadastral surveying.
Cadastral surveying: The process of measuring and mapping land parcels for ownership and registration purposes.

Quick Knowledge Check

What is the primary use of the US survey fathom?

Measuring land parcels

Measuring water depths and nautical lengths

Measuring building heights

How many feet equal one chain?

66 feet

100 feet

50 feet

Why might minor discrepancies occur when converting between these units?

Because of rounding errors only

Due to differences between US survey and international units

Because they measure different physical properties

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