What is the speed limit for boats in Brisbane River?
The maximum speed is 40 knots provided the “vessels” operation does not create a marine incident. There are two inlets in this area of the Brisbane River.
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Smooth water limits 40 knots, unless otherwise prescribed. all creeks and waterways flowing into the Brisbane River (except the Bremer River) – six knots all traffic. Temporary speed limits may be gazetted during harbour works, such as wharf and bridge construction.
The entire Brisbane River is re-opening to recreational boating this Saturday (26 March) following the floods. Transport and Main Roads Minister Mark Bailey said strict conditions would be in place, following extensive safety inspections.
A river typically flows at somewhere between 1 and 6 knots. You could probably row downstream in a trireme at a maximum of 12 knots or upstream at around 3 knots. A knot is one nautical mile per hour. 12 knots is about 13.8 mph.