Ocean Extreme cruising Sydney Harbour.
Catriona explores Sydney Harbour.
Passengers on Ocean Extreme's black-and-grey rigid inflatable boat see Sydney Harbour in an exciting way never available to the public before.
This is not just a rubber ducky this vessel travels at up to 58 knots (about 110km/h), and the only other two of its type in Australia belong to Sydney Water Police. It was designed as a fast-response special-forces vessel to get troops somewhere in a hurry through calm and rough water.
The seven-metre Gemini RIB came from South Africa and has two 200hp Mercury EF V6 engines. It carries up to eight passengers, who straddle the cushioned seats, put their feet in stirrups and grip a foam-covered bar - a bit like riding a bucking bronco at a rodeo.
The owners of Extreme I, Tyrone Calvert and Andrew Schulter, operate out of Cockle Bay, but they will collect you from just about anywhere within reason on Sydney Harbour. The tours last about 45 minutes, and there are two a day: 11am and 1pm.
Passengers must wear a lifejacket, and it's recommended that they also wear the wet-weather gear supplied by the company.
The harbour has an eight-knot zone, but in about six to seven minutes you can get some speed up and - depending on weather conditions - hit up to 50 knots once you reach the Heads. If you are really lucky, they will do some adrenaline-pumping hairpin turns.
The return journey to Cockle Bay goes via North and Middle heads, and past Cremorne, Neutral Bay and Kirribilli #&151; some of Sydney's prettiest suburbs.