In the Bunker Group? Out from 1770?
Been a few years now but anchorage is OK in big lagoon.
Bombie in entrance on outside that you need to look out for but it just might be too deep for yr boat.
The coral outside on the eastern side was all barren and dying on my last visit.
About 70nm from Bundy and 35 from Round Hill.
Ch 82 VHF marine repeater gets you into Gladstone VMR.
No mob phones out there.