off-island

[ awf-ahy-luh nd, of- ]
/ ˈɔfˈaɪ lənd, ˈɒf- /

adjective

located or tending away from the shore of an island: an off-island current.

adverb

away from the shore of an island: The ship sank about two miles off-island.

Origin of off-island

First recorded in 1915–20