Rotten bunch's drunken exploits on board ship (3,7)
I believe the answer is:
sex pistols
'rotten bunch's' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'drunken exploits on board ship' is the wordplay.
'drunken' indicates anagramming the letters.
'on board' indicates putting letters inside (inserted letters are taken on board).
'ship' becomes 'SS' (prefix in ship names eg SS Great Britain).
'exploits' is an anagram of 'expistol'.
'expistol' going within 'ss' is 'SEX PISTOLS'.
Can you help me to learn more?
(Another definition for sex pistols that I've seen is " Punk rock group".)