What does the cryptic crossword clue "Offshore location one's going to for broadcast (4)" mean?

The definition is "Offshore location". The wordplay uses a homophone (sounds like). sounds like I’LL = one’s going to… The answer is ISLE.

Offshore location one's going to for broadcast (4)

Times Cryptic #28947 | 19 Across | 2024-06-19 flower