A leak that has to be fixed on both sides of dry cargo ship (4)

I believe the answer is:

drip

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'a leak' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

(Other definitions for drip that I've seen before include "See 6" , "Fall or let fall in drops" , "weak character" , "Wimp" , "Fall in small droplets as from tap" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).

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