Each NL should be marked with:
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.1 the manufacturers name or symbol, and designation
of type;
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.2 the type/category of the NL in accordance with
COLREGs;
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.3 serial and certificate number;
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.4 head line directions;
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.5 range in nautical miles; and
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.6 nominal wattage of the light source in watts,
if different values lead to different ranges.