Confused everybody offshore? (3,2,3)
I believe the answer is:
all at sea
'confused' is the definition.
(I've seen this in another clue)
'everybody offshore?' is the wordplay.
'everybody' becomes 'all' (all people).
'offshore?' becomes 'atsea' (I've seen this in another clue).
'all'+'atsea'='ALL AT SEA'
(Other definitions for all at sea that I've seen before include "Quite confused on the briny?" , "Is a sailor's life so" , "Entire crew" , "Totally disorganised" , "Utterly confused, totally on the ocean" .)