Crossword Genius

What you don't have, if you can't stand sailing (3,4)

Ross

I believe the answer is:

sea legs

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(Other definitions for sea legs that I've seen before include "Ability to resist sickness on boat" , "Stability on board ship" , "Balance on board" , "Molten rock" , "not to feel sick on board?" .)

I've seen this clue in the Evening Standard.
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