Topless Bahamian port officer in storm (7)
I believe the answer is:
assault
'storm' is the definition.
(I've seen this before)
'topless bahamian port officer' is the wordplay.
'topless' means to remove the first letter.
'bahamian port' becomes 'nassau' (I've seen this in another clue).
'officer' becomes 'lt' (abbreviation for lieutenant).
'nassau' with its initial letter taken away is 'assau'.
'assau'+'lt'='ASSAULT'
'in' acts as a link.
(Other definitions for assault that I've seen before include "Storm" , "Violent attack in action or words" , "Sort of course" , "Onslaught" , "Launch an attack on" .)