What is a nautical mile (UK) [NM (UK)]?

The UK nautical mile, also known as the Admiralty nautical mile, was defined as exactly 6,080 feet or 1,853.184 metres, slightly longer than the international nautical mile.

Where was the arpent commonly used?

The arpent was a historical French unit mainly used in France and French colonies like Quebec and Louisiana for land measurement and cadastral purposes.

Why is it important to distinguish between NM (UK) and the international nautical mile?

Because NM (UK) is slightly longer than the international nautical mile, distinguishing between the two ensures accuracy when converting or comparing historical distances.

How to Convert from Nautical mile (UK) [NM (UK)] to Arpent?

Learn how to convert measurements from the UK nautical mile (NM (UK)) to the historical French unit of length, arpent, commonly used in land measurement and cadastral purposes.

Nautical mile (UK) [NM (UK)]

Arpent

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Nautical mile (UK) [NM (UK)] to Arpent Conversion Table

Nautical mile (UK) [NM (UK)]	Arpent

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Nautical mile (UK) [NM (UK)] to Arpent Conversion Table
Nautical mile (UK) [NM (UK)]	Arpent

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What Is This Tool?

This converter enables you to translate distances measured in the UK nautical mile (NM (UK)) into arpents, a historical French unit of length used primarily for land and cadastral measurements in places like Quebec and Louisiana.

How to Use This Tool?

Enter the value in nautical mile (UK) [NM (UK)] that you want to convert.
Select arpent as the target unit for conversion.
Click the convert button to obtain the equivalent measurement in arpents.

Key Features

Converts from UK nautical mile (NM (UK)) to arpent using a specific conversion rate.
Supports understanding and reconciling historical maritime and land measurement units.
Useful for interpreting historical navigation charts, cadastral maps, and legacy documents.
Browser-based and easy to use for quick conversion needs.

Examples

2 NM (UK) converts to 63.3333333334 arpents.
0.5 NM (UK) converts to 15.83333333335 arpents.

Common Use Cases

Interpreting distances on historical UK Admiralty maritime charts and logs.
Converting legacy maritime or legal documents involving UK nautical miles to land units.
Analyzing old navigation instruments or datasets using the UK definition.
Describing parcel sizes and river frontage lengths in colonial Quebec or Louisiana cadastral records.
Reconciling historical land descriptions for surveying and legal purposes.

Tips & Best Practices

Consider the historical context when performing conversions to ensure relevance.
Be aware that the length of an arpent varied over time and location, affecting accuracy.
Remember the UK nautical mile (NM (UK)) is slightly longer than the international nautical mile, so check the unit definitions carefully.
Use this tool as a guide alongside original source materials for precise interpretation.

Limitations

The exact size of an arpent differed geographically and historically, which may cause inconsistencies.
The UK nautical mile (NM (UK)) differs slightly from the standard international nautical mile.
Accuracy depends on properly understanding and applying historical unit definitions relevant to the source documents.

Frequently Asked Questions

What is a nautical mile (UK) [NM (UK)]?: The UK nautical mile, also known as the Admiralty nautical mile, was defined as exactly 6,080 feet or 1,853.184 metres, slightly longer than the international nautical mile.
Where was the arpent commonly used?: The arpent was a historical French unit mainly used in France and French colonies like Quebec and Louisiana for land measurement and cadastral purposes.
Why is it important to distinguish between NM (UK) and the international nautical mile?: Because NM (UK) is slightly longer than the international nautical mile, distinguishing between the two ensures accuracy when converting or comparing historical distances.

Key Terminology

Nautical mile (UK) [NM (UK)]: A historical UK maritime length unit defined as exactly 6,080 feet or 1,853.184 metres, used in Admiralty charts and maritime documents.
Arpent: A historical French unit of length used mainly for land measurement and cadastral purposes, with values that varied regionally and over time.

Quick Knowledge Check

What is the definition of the UK nautical mile (NM (UK))?

Exactly 1,852 metres

Exactly 1,853.184 metres

Exactly 6,000 feet

For what purpose was the arpent primarily used?

Maritime navigation

Land measurement and cadastral work

Measuring air distances

Why must one be cautious when converting NM (UK) to other units?

Because NM (UK) is shorter than the international nautical mile

Because the arpent length varies by region and period

Because the arpent is always equal to 1 metre

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