Historically, the nautical mile was defined as ...

one minute of latitude
one hour cruise on average wind
1/12 distance from Calais to London
1000 English yards
In 1929, the in­ter­na­tion­al nautical mile was defined by the First In­ter­na­tion­al Ex­tra­or­di­nary Hy­dro­graph­ic Con­fer­ence in Monaco as pre­cise­ly 1,852 meters. The United States nautical mile was defined as 6,080.20 feet (1,853.24 m) based in the Menden­hall Order foot of 1893. It was aban­doned in favour of the in­ter­na­tion­al nautical mile in 1954. The Imperial nautical mile, often called an Ad­mi­ral­ty mile, was defined by its relation to the Ad­mi­ral­ty knot, and was aban­doned in 1970.

Answers distribution

one minute of latitude
one hour cruise on average wind
1/12 distance from Calais to London
1000 English yards
answers
flagSweden
69%
7%
0%
23%
13
flagNorway
54%
13%
9%
22%
22
flagFrance
53%
0%
0%
46%
13
flagthe Netherlands
51%
13%
0%
34%
29
flagItaly
50%
15%
30%
5%
20
flagPoland
41%
12%
12%
32%
5422
flagGermany
41%
8%
12%
37%
74
flagthe United Kingdom
38%
10%
8%
42%
122
flagUnknown
31%
12%
16%
38%
330
flagthe United States
31%
18%
15%
34%
32
flagRepublic of Ireland
21%
7%
14%
57%
14

Gender

men41%
women38%
one minute of latitude
41%
38%
one hour cruise on average wind
9%
12%
1/12 distance from Calais to London
15%
11%
1000 English yards
33%
37%

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Historically, the nautical mile was defined as ...
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Author: Katarzyna Dąbrowska
Illustration: Matt & Mandy
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