Convert chain (US survey) to nautical mile (UK)
Please provide values below to convert chain (US survey) [ch (US)] to nautical mile (UK) [NM (UK)], or Convert nautical mile (UK) to chain (US survey).
How to Convert Chain (Us Survey) to Nautical Mile (Uk)
1 ch (US) = 0.010855284868475 NM (UK)
Example: convert 15 ch (US) to NM (UK):
15 ch (US) = 15 × 0.010855284868475 NM (UK) = 0.162829273027125 NM (UK)
Chain (Us Survey) to Nautical Mile (Uk) Conversion Table
| chain (US survey) | nautical mile (UK) |
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Chain (Us Survey)
A U.S. survey chain is a unit of length equal to 66 U.S. survey feet.
History/Origin
The U.S. survey chain is based on the U.S. survey foot, which was slightly different from the international foot. The use of survey units was officially phased out in 2022.
Current Use
The U.S. survey chain was used for land surveying in the United States.
Nautical Mile (Uk)
The UK nautical mile, or Admiralty mile, was defined as 6,080 feet.
History/Origin
The British Admiralty defined its nautical mile as a thousandth of an imperial nautical mile. The UK adopted the international nautical mile of 1,852 meters in 1970.
Current Use
The UK nautical mile is an obsolete unit.