On which voyagers can have a half decent weekend (4)

I believe the answer is:

deck

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'on which voyagers can' is the definition.
I can't tell whether this definition defines the answer.

'a half decent weekend' is the wordplay.
'a half' means to take half the letters.
'weekend' becomes 'k' (I've seen this in other clues).
'decent' halved is 'dec'.
'dec'+'k'='DECK'

'have' is the link.

Can you help me to learn more?

(Other definitions for deck that I've seen before include "Ship's flooring; pack" , "Pack - embellish - ship's floor" , "Ship's platform" , "Pack of playing cards on board" , "Pack of cards (US)" .)

I've seen this clue in the Evening Standard.

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