Skippers on a longboat carrying private (8)
I believe the answer is:
personal
'private' is the definition.
(associated in meaning)
'skippers on a longboat carrying' is the wordplay.
'carrying' indicates the answer is hidden within the clue.
'PERSONAL' can be found hidden inside 'skippers on a longboat'.
(Other definitions for personal that I've seen before include "Such a rude remark" , "Offensively intrusive" , "Individual; advert (column)" , "Relating to the individual" , "Of one individual" .)