Crossword Genius

Said to observe more impartial mariner (8)

Ross

I believe the answer is:

seafarer

I'm a little stuck... Click here to teach me more about this clue!

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

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for seafarer that I've seen before include "man being attracted by waves?" , "Sinbad?" , "One on the water" , "Salt" , "Traveller over water" .)

I've seen this clue in The Irish Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.