Leading directors just right for sailors? (9)

I believe the answer is:

starboard

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'right for sailors?' is the definition.
'starboard' can be an answer for 'right' (right side of a ship). I am unsure of the 'for sailors?' bit.

'leading directors' is the wordplay.
'leading' becomes 'star' (synonyms).
'directors' becomes 'board' (board of directors).
'star'+'board'='STARBOARD'

'just' acts as a link.

Can you help me to learn more?

(Other definitions for starboard that I've seen before include "Ship's right side" , "One side of a ship" , "Right side of ship or plane" , "right to 14 [YACHTS]" , "Literally, the steering side of a vessel" .)

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