Just been browsing the boating regulations for QLD and Epirb is a must pass partially smooth and the is says Should carry and that's flares anchor, etc and then under that it says this.
Standard safety equipment for boats that don't require registration
Equipment Smooth waters Partially smooth waters Beyond partially smooth waters Must carry the following equipment EPIRB or PLB* ✔# Signalling device if operating at between sunset and sunrise (e.g. torch, lantern, glow stick) ✔ ✔ ✔
You have to register your Epirb something dose not add up .