Speed limit sign is confusing


Hi guys what is the speed limit through Between Russell island and north stradbroke island. Sign shows 6 knots and all the distance off rules but does not say it is a 6knot zone .
is that correct?


Fun First!
Some of it is 40 knots and as you get closer to North Straddie there are a few signs that say "Go Slow Zone" this area is 6 knots. Basically everywhere in Moreton Bay Marine Park that is shallow is a go slow zone. If you stay within the markers you'll be fine :)