| 30.1 |
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Direction light with narrow sector and course to be followed, flanked by darkness or unintensified light |
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| 30.2 |
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Direction light with course to be followed, uncharted sector is flanked by darkness or unintensified light |
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| 30.3 |
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Direction light with narrow fairway sector flanked by sectors of different character |
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| 30.4 |
 |
Direction light with narrow fairway sector flanked by light sectors of different character on multicoloured charts |
|
| 31 |
 |
Moiré effect light (day and night), arrows show when course alteration needed |
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| Note: A single bearing is always from seaward. The reciprocal bearing may be quoted on certain leading lines. |