Skill of two vessels going around small island (13)

'skill' is the definition.
(craftsmanship is a kind of skill)

'two vessels going around small island' is the wordplay.
I cannot quite understand how this works, but
'vessels' could be 'crafts' ('craft' can be a synonym of 'vessel') and 'crafts' is found in the answer.
'small' could be 's' (abbreviation - e.g. clothes size) and 's' is found in the answer.
'island' could be 'man' (the Isle of Man is an example) and 'man' is found within the answer.
The remaining letters 'hip' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

'of' acts as a link.

Can you help me to learn more?