Offers for fuel carriages (7)

I believe the answer is:

tenders

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'offers' is the definition.
(I know this)

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

(Other definitions for tenders that I've seen before include "Bids" , "Supply ships" , "They provide supplies to other ships" , "Offers to do work for a stated amount" , "Dinghies towed by ships" .)

I've seen this clue in the Sydney Morning Herald.

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