At sea? Runs up to see location after sea-voyage, perhaps (6)

I believe the answer is:

abroad

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'at sea?' is the definition.
(thesaurus)

I can't explain the remainder of the clue.

(Other definitions for abroad that I've seen before include "Overseas; (of rumour) widely current" , "in France, say" , "in the field" , "to France, maybe" , "In another country, not at home" .)

I've seen this clue in The Independent.

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