B.C. Marina's and Anchorages

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Lights Aids

In Canada, all lighted aids to navigation, with the exception of those aids equipped with fixed (continuous) lighting, follow an established light flash character pattern. Such characters describe the periodic rhythm of a navigation light, thus enabling it to be identified on charts or while in visual contact.

 

All light aids are marked with a teardrop symbol

 

Abbreviation Class of light Illustration
International National
F F Fixed


Occulting (total duration of light longer than total duration of darkness)

Oc Oc Single-occulting

Oc(2)
Example
Exemple

Oc(2)
Gp Occ(2)†

Group-occulting

Oc(2+3)
Example
Exemple

  Composite group-occulting


Isophase (duration of light and darkness equal)

Iso Iso Isophase


Flashing (total duration of light shorter than total duration of darkness)

Fl Fl Single-flashing

Fl(3)
Example
Exemple

Fl(3)
GpFl(3)

Group-flashing

Fl(2+1)
Example
Exemple

Fl(2+1) Composite group-flashing
LFl LFl Long-flashing (flash 2s or longer)


Quick (repetition rate of 50 to 79 - usually either 50 or 60 - flashes per minute)

Q

Q
Qk Fl†  

Continuous quick

Q(3)
Example
Exemple

Q(3) Group quick
IQ

IQ
Int Qk Fl†

Interrupted quick


Very quick (repetition rate of 80 to 159 - usually either 100 or 120 - flashes per minute)

VQ VQ Continuous very quick

VQ(3)
Example
Exemple

VQ(3) Group very quick
IVQ   Interrupted very quick


Ultra quick (repetition rate of 160 or more - usually either 240 to 300 - flashes per minute)

UQ   Continuous ultra quick
IUQ   Interrupted ultra quick

Mo(A)
Example
Exemple

Mo(A) Morse code
FFl FFl Fixed and flashing

Al.WR
Example
Exemple

Al
Alt†

Alternating

 

More Lights :

 

Light Structures, Major floating lights

Colours of Lights

Lights marking fairways

 

 

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