Crossword Genius

It follows a gale at sea too (2,4)

Ross

I believe the answer is:

as well

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'too' is the definition.
(synonyms)

I don't understand how the remainder of the clue works.

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(Other definitions for as well that I've seen before include "on top" , "with equal effect" , "Also, in addition" , "A swell sort of addition" , "Also, additionally" .)

I've seen this clue in The Globe and Mail.
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