Jet Ski Sydney Harbour - Environmental Facts

It has always been said that Jet Ski’s (Waverunner, Sea Doo, and Kawasaki) cause damage to the environment in many ways, causes erosion, unnecessary wash, damage to seagrass and sea life etc.

If you compare the impact a Jet Ski has on the environment compared to other water vessels, Jet Ski come out as having the least impact on the environment.


Standard boats with outboard motors have propellers protruding out of the hull and sit far below the hull of the boat deep in the water acting like a giant blender. This causes great damage to the marine life.

Jet Skis on the other hand have an intake grate that actually sucks up water from the bottom and disposes it out the back causing thrust. On the intake grate there is actually a grate to stop anything other than water from entering, protecting marine life and anatomies.

Tests have shown that today's personal watercraft is substantially quieter, new PWCs have vastly improved sound dampening systems and extremely low emission levels. Most are now more efficient and quieter than many other vessels, including those with stern drive and inboard engines.

It has been publicly known that they have less impact on the environment than the normal outboard motor.

They are quieter than most modern boats. With the new introduction of the 4 stroke motors in all skis they actually produce less emission than current boats and do not leave pollutants in the water as they now all use a closed loop cooling system. The propeller in the Jet Ski is inside the hull and doesn’t protrude out, therefore doesn’t harm the environment or cause erosion.

In defence of Jet Skis our ban from Sydney Harbour cannot be due to the impact Jet Skis have on the environment.