When I got a power boat license and later my Coxswain's Certificate, vessels travelling at ten knots or more must not go within thirty metres of the shore, any structures or another vessel. I regularly see vessels travelling within 30 metres of other vessels. They will regularly go within a couple of metres of other vessels. I have never seen the Water Police or a Boating Service Officer stop any vessels breaking these laws. You will see water skiers amongst moored craft and anchored vessels.
Tinnies speed amongst anchored and moored vessels, even when people are swimming.
If the people operating these vessels were driving a car, the police would pull them over and book them very quickly. Vessels regularly pass between my vessel and the shore at speed. The worst offenders are the fly-bridge cruisers. David Ledsam, Lidcombe. A substance called Hexose Oxidase is extracted from the marine alga Chondrus Cripus and mixed with the paint.