USCG Exam Practice · Light List, ranges, and light characteristics
A light described as 'Al WR' in the Light List is best described as which type of light?
- AA white light with a red sector covering a danger area
- BA light that shows white and red colours alternately✓ correct
- CA flashing light that alternates between white and red flashes in a group
- DAn isophase light with equal periods of white and red
Why B is correct
The abbreviation 'Al' stands for Alternating, meaning the light shows different colours alternately. 'Al WR' indicates the light alternates between white and red. Light List — light-characteristic (Al).
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