Abbreviation | General Nautical Terminology | Light Characteristic | Nautical Topics | Navigation | Signals & Communication
Isophase Light (Iso)
A rhythmic light whose periods of light and darkness are equal within each cycle.
Light Characteristic
Did you know that nautical light characteristics are basically the Morse code of the sea? Except instead of ‘dot-dash-dot,’ it’s ‘flash-flash-flash, then a pause… or was it a flash-pause-flash?’ These blinking enigmas might look like a light show, but they’re really trying to say, ‘Hey, sailor! There’s a rock over here!’ or ‘This is the channel, you’re welcome!’ Decoding them can feel like solving a lighthouse’s secret diary, but fear not! We’re here to help you crack the code and keep your maritime adventures well-lit and obstacle-free. With us, you’ll be the light-master of the seas in no time!
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Abbreviation | General Nautical Terminology | Light Characteristic | Nautical Topics | Depths & Clearance | Navigation | Signals & Communication
Height of Light
The elevation of a navigational light’s focal plane above its stated vertical datum. For a shore light, the chart or light list states both the height and the datum used; the datum varies by hydrographic authority and location and must not be assumed always to be Mean High Water Springs. The focal plane is the…
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Abbreviation | General Nautical Terminology | Light Characteristic | Nautical Topics | Navigation | Signals & Communication
Flashing Light (Fl)
A rhythmic navigation light whose periods of light are shorter in total than its periods of darkness.
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Abbreviation | General Nautical Terminology | Light Characteristic | Nautical Topics | Navigation | Signals & Communication
Directional Light (Dir)
A navigation light visible over a restricted sector and used to indicate a particular direction.
If you belive the Earth is flat, you're about to fall of the end...
If you belive the Earth is flat, you're about to fall of the end...
