Reportedly notice lighter sailor (8)

I believe the answer is:

seafarer

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'sailor' is the definition.
(I know that seafarer is a type of sailor)

I don't understand the remainder of the clue.

(Other definitions for seafarer that I've seen before include "'Mariner, sailor (8)'" , "One going by ship" , "Salt" , "One travelling by ship" , "Rating maybe" .)

I've seen this clue in The Daily Express.

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