Boat's the same even when capsized (5)

I believe the answer is:

kayak

I'm a little stuck... Click here to teach me more about this clue!

'boat's' is the definition.
(kayak is a kind of boat)

I cannot understand how the remainder of the clue works.

(Other definitions for kayak that I've seen before include "Inuit boat" , "Boat used by 23 Across" , "A small covered canoe" , "Type of canoe" , "Palindromic canoe used by eskimos" .)

I've seen this clue in The Globe and Mail and The Telegraph.

Want a hint initially instead of a full solution? Install my app