All boats must travel at a safe speed, taking into account the amount of boat traffic in the area, weather conditions and when visibility is affected by glare or city lights.
Specifically, you must not exceed a speed of 5 knots (a fast walking speed) if you are;
within 200 metres of the shore
within 200 metres of a boat displaying a divers flag
within 50 metres of any other boat
within 50 metres of a person swimming
on a power boat if any person has any part of their body outside the rails or edge of the deck.
You must be over the age of 15 to operate any power boat which is capable of speed exceeding 10 knots. This includes dinghies and PWCs.