Marine Radar


An electronic device that detects objects or landmasses around a vessel by bouncing radio waves off them; useful in fog or darkness. Often included in advanced boater courses.

Related Terms

Night Vision Devices

Thermal or low-light scopes or goggles aiding nighttime navigation; boater ed covers proper usage...

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Electronic Chart Display and Information System (ECDIS)

A sophisticated navigation system integrating GPS data and digital charts; typically used on larg...

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Navigation Rules

The “rules of the road” for waterways, dictating right-of-way, overtaking procedures, and collisi...

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Operating in Fog

Techniques like sounding fog signals, reducing speed, and using radar or GPS to avoid collisions ...

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Collision Avoidance

Strategies to prevent accidents, including early course changes, clear signals, and adherence to ...

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Rough Water Handling

Techniques for operating in high waves, heavy chop, or strong winds (e.g., reducing speed, headin...

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AIS (Automatic Identification System)

A transponder broadcasting a vessel’s position, speed, and course to other ships and coastal stat...

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Radar Reflector

A device, typically placed on smaller boats, that helps marine radar systems detect the vessel mo...

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Safe Speed

A velocity that allows adequate time to avoid collisions, considering visibility, traffic density...

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