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Vessels continue going west, cold and hot onboard (6)

Ross

I believe the answer is:

yachts

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

I can't explain the remainder of the clue.

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(Other definitions for yachts that I've seen before include "Sand or sea vessels" , "Light sailing-vessels" , "Vessels for cruises?" , "Sailing boats" , "Pleasue boats" .)

I've seen this clue in The Telegraph.
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