Vessels requiring knotted ropes at bow (5,5)

I believe the answer is:

power boats

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'vessels' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'knotted ropes at bow' is the wordplay.
'knotted' indicates an anagram.
'ropes'+'at'+'bow'='ropesatbow'
'ropesatbow' with letters rearranged gives 'POWER BOATS'.

'requiring' is the link.

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I've seen this clue in The Times.

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