Sailing

Nautical mile

What is Nautical mile?

The unit of distance used at sea: it equals 1,852 metres, a little more than a kilometre and a half. It derives from the measurement of the Earth’s meridians, and it gives rise to the knot, the unit we use to measure the speed of boats.

Category
Sailing
Reviewed by
Katahisa Ugidos García · Merchant Navy Officer and Cetacean Guide (Government of the Canary Islands) See their profile in the team
Last reviewed

A measure born of the Earth

The nautical mile is the way distances are measured at sea. It equals 1,852 metres, a little more than a kilometre and a half.

Its origin is a lovely one. The measure rests on the round shape of the planet itself. If you divide a full trip around the Earth into very small pieces, each of those pieces is a nautical mile. That is why it fits so well with navigation charts and with the position of the stars.

The knot is also born from the nautical mile. A knot is simply covering one nautical mile in one hour. Distance and speed are thus tied together by the same measure.

The distances of our outings

At Picarus we do not sail long distances. We leave the Los Gigantes marina and move along the south-western coast of Tenerife, close to the cliffs.

This means the miles we cover are few. It is not about reaching far. It is about finding the right spot, easing off and letting the sea show us whatever it has that day.

We sail through the Teno-Rasca Marine Strip, a protected area within the Natura 2000 Network. Every mile we make through those waters we make with respect, in small groups and at a calm pace.

To give you an idea

A kilometre and a half takes about twenty minutes to walk. A nautical mile is barely a little more than that.

When you are on board and hear talk of miles, think of short, nearby distances. We are not going to cross the ocean. We are going to share a spell of sea in front of one of the island’s most striking coasts, in no hurry to press on.

Frequently asked questions

  • How many metres are there in a nautical mile?

    A nautical mile equals 1,852 metres, a little more than a kilometre and a half. It is slightly longer than the land mile used on the road.

  • Why does the nautical mile measure exactly those metres?

    Because it comes from the very shape of the Earth: a nautical mile matches a small piece of a meridian. That makes it very useful for working out courses on charts.

Want to live it on board?

Sail with us through the Teno-Rasca Marine Strip in small groups, aboard our sailboats.

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Quality milestone · 2018

ISO 9001:2015

We were the first company in the sector to obtain the ISO 9001:2015 certificate for whale watching and crewed services for maritime excursions (AENOR, 2018).

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