Navigation Basics

Light Marking

The term ‘light marking’ defines the device that is installed outside from the vessel and emits light from a determined geographical point in order to help the mariner to determine his position, to navigate with safety, to mark and warn for nautical dangers and other obstacles. In general, these devices are called ‘lights’ and are […]
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IALA Maritime Buoyage System

The need for the establishment of a unified buoyage system became crucial the last decades, because of the great extend of the international navigational traffic, the accidents and, finally, because of the variety of the buoyage systems that were locally applied by the States. It has to be highlighted that during 1975 more than 30 […]
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Safe Speed

Look – Out Every vessel shall at all times maintain a proper look-out by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision. Safe Speed Every vessel shall at all times […]
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Definitions at Earth

Shape of the Earth In reality, the shape of the earth is elliptic, slightly bulked around the equator and slightly flattened in the poles.In navigation, earth is considered to be a sphere given that the errors caused by this assumption are negligible. The Movement of the Earth The earth, being a spherical isolated body in […]
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