Seismic ship Vyacheslav Tikhonov
Initially, dynamite was the sound source for marine seismic exploration. Due to its obvious danger, pneumatic guns were later used as a source. The accumulation of seismic data is a…

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If you have lost your luggage
First of all, you should contact the representative of the airline whose flight you have flown to, or the representative of the airport if there is no representative office of…

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Marine units of length and speed
To measure at sea the distances between different points and the path traveled by the ship, a value called the nautical mile is adopted. Nautical mile - the average arc…

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meridian

Why the speed of sea transport is determined in knots

On land, speed is determined in kilometers or miles per hour, but when it comes to measuring the speed of water transport, the count is kept in some mysterious “nodes”. Where did this name come from and what does it correspond to in our time. In order to understand this, one should turn to maritime tradition and history.

At the dawn of seafaring, no special instruments existed for determining the position of a ship at sea. Continue reading

Marine units of length and speed

To measure at sea the distances between different points and the path traveled by the ship, a value called the nautical mile is adopted.

Nautical mile – the average arc length of one minute of the earth meridian.

The length of the arc of one minute of the earth’s meridian is 1 ‘= 1852.23 – 9.34 cos 2φ, where φ is the latitude of the ship’s elevation in degrees. Continue reading

Proofreading materials
Nautical charts, directions, hydrometeorological aids and other navigation guidelines can only ensure navigational safety of navigation if they are constantly maintained at the present level by updating them. Therefore, the…

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International Conventions and Codes
1979 International Convention on Search and Rescue at Sea - (English International Convention on Maritime Search and Rescue) (often referred to as the “ATS Convention”) was concluded in Hamburg (Federal…

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Classification societies
The International Association of Classification Societies (IACS) is an international association of classification societies that aims to develop standards and regulations regarding the safety of shipping. The association is headquartered…

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Marine units of length and speed
To measure at sea the distances between different points and the path traveled by the ship, a value called the nautical mile is adopted. Nautical mile - the average arc…

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