Ship paprika, every so often (3)

I believe the answer is:

ark

'ship' is the definition.
(as in Noah's ark)

'paprika every so often' is the wordplay.
'every so often' means one should take alternating letters.
The alternate letters of 'paprika' are 'ARK'.

(Other definitions for ark that I've seen before include "Large vessel" , "Boat built to withstand great flood" , "Animal transporter" , "Rescue boat" , "old vessel" .)

I've seen this clue in The Irish Times.

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