What is a nautical mile (international)?

It is a length unit defined exactly as 1,852 meters, traditionally equal to one minute of arc of latitude on Earth, used mainly for marine and aeronautical distances.

What is the US survey chain [ch] used for?

The US survey chain, equal to 66 US survey feet, is a traditional unit employed in historical US land surveying, cadastral work, and property boundary descriptions.

Why convert nautical miles to US survey chains?

Converting helps integrate marine navigation distances with historical land survey records and assists in accurate property mapping and GIS applications.

How to Convert from Nautical mile (international) to Chain (US survey) [ch]

Learn how to convert lengths from the international nautical mile to the US survey chain (ch). This tool helps translate marine and aeronautical distances into traditional US surveying units used in land plotting and cadastral work.

Nautical mile (international)

Chain (US survey) [ch]

Please check your input. It must be a valid numeric value.

Nautical mile (international) to Chain (US survey) [ch] Conversion Table

Nautical mile (international)	Chain (US survey) [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.

Nautical mile (international) to Chain (US survey) [ch] Conversion Table
Nautical mile (international)	Chain (US survey) [ch]

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What Is This Tool?

This converter assists in transforming measurements from the international nautical mile, a unit used in navigation and oceanography, to the US survey chain, a historic unit employed in land surveying across the United States. It is helpful for integrating marine or aeronautical data with legacy surveying records.

How to Use This Tool?

Enter the length value in nautical miles (international)
Select the source unit as nautical mile (international)
Select the target unit as chain (US survey) [ch]
Click the convert button to see the equivalent length in chains

Key Features

Converts length from nautical miles (international) to Chain (US survey) [ch]
Supports units used in navigation and traditional US land surveying
Browser-based tool requiring no installation
Useful for mapping, GIS, and cadastral purposes

Examples

2 nautical miles (international) converts to 184.1243434344 Chain (US survey) [ch]
0.5 nautical mile (international) equals 46.0310858586 Chain (US survey) [ch]

Common Use Cases

Measuring distances between waypoints on marine and aeronautical charts
Interpreting historical US land deeds and cadastral surveys
Converting marine navigation units for property boundary documentation
Integrating nautical distances into GIS and mapping projects

Tips & Best Practices

Verify units before conversion to ensure accuracy
Use this tool when bridging marine or aeronautical data with land surveying records
Confirm legacy measurement variations when dealing with historical data
Apply conversions cautiously for legal or cadastral purposes due to measurement differences

Limitations

The US survey chain differs slightly from international standards due to use of US survey foot
Minor discrepancies may arise from legacy measurement variations in historical uses
This conversion is primarily applicable when working with legacy survey data or linking navigational and land surveying units

Frequently Asked Questions

What is a nautical mile (international)?: It is a length unit defined exactly as 1,852 meters, traditionally equal to one minute of arc of latitude on Earth, used mainly for marine and aeronautical distances.
What is the US survey chain [ch] used for?: The US survey chain, equal to 66 US survey feet, is a traditional unit employed in historical US land surveying, cadastral work, and property boundary descriptions.
Why convert nautical miles to US survey chains?: Converting helps integrate marine navigation distances with historical land survey records and assists in accurate property mapping and GIS applications.

Key Terminology

Nautical Mile (International): A unit of length exactly 1,852 meters, used in navigation and defined as one minute of arc of latitude.
Chain (US survey) [ch]: A traditional measure of length equal to 66 US survey feet, historically used in US land surveying and cadastral work.
US Survey Foot: A foot unit used in US land surveying that differs slightly from the international foot, affecting measurements like the survey chain.

Quick Knowledge Check

What defined length does one international nautical mile represent?

Exactly 1,500 meters

Exactly 1,852 meters

Exactly 2,000 meters

What is one US survey chain equivalent to?

100 US survey feet

66 US survey feet

50 US survey feet

In which area is converting nautical miles to chains most relevant?

Legacy land surveying and marine navigation integration

Converting international metric units only

Measuring aircraft altitudes

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