- That part of the sea at a good distance from the shore, or
where there is deep water and no need of a pilot; also, distance from
the shore; as, the ship had ten miles offing; we saw a ship in the
offing.
Meaning of 'offing' (Princeton's WordNet)
1 . offing
[ n]
Meaning (1): - the part of the sea that can be seen from the shore and is beyond the anchoring area