Away from land (2,3)
'away from land' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for at sea that I've seen before include "all over the place?" , "cruising?" , "on board" , "Where a packet might be" , "Totally disorganised" .)
'away from land' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for offshore that I've seen before include "No longer moored" , "In the main" , "Out to sea, away from land" , "Out of tax jurisdiction" , "avoiding tax" .)