Catamarans by One2three Naval Architects

12m Passenger Catamaran

A 12m passenger catamaran designed for short-voyage passenger transfers for a luxury-island resort. Features storage for luggage and golf bags. The open superstructure without windows provides a well ventilated area, with roll-down clears for inclement weather. Designed for 30 seated passengers and up to 20 standing. Twin outboard engines provide a cost-effective & simple propulsion solution which enhances the boat's manoeuvrability.

13m Mark Boat

Designed specifically for the America's Cup Race Management, this is a VIP-spectator vessel that also functions as a course marker. The catamaran hullform allows a large stable viewing platform positioning spectators & camera crew close to the action in a comfortable setting. Twin Volvo IPS units provide dynamic positioning to easily set the location of course markers.

15m Net Cleaner

This catamaran has been designed for the maintenance of fish farm nets. The vessel is fitted with the MIC net-cleaning and inspection system. She has been designed to meet the Nordic Boat Standard and can comfortably accommodate 4 crew overnight. This vessel is the ideal platform for any offshore work with a spacious aft deck, high stabililty and excellent visibility of operations from the wheelhouse.

16m Harbour Cleaner

This catamaran was specifically designed for the Environmental Services unit of NSW Maritime to operate on Sydney Harbour. Its mission statement is to keep the harbour pristine by allowing easy skimming of surface rubbish and access to the many coves via the unique bow ramp. The vessel also provides excellent seakeeping characteristics with a large open aft deck area which makes it suitable for a wide range of work applications.

17m Ambulance Vessel

The vessel is intended to operate a high-frequency ambulance service in partially smooth waters from Gladstone Harbour to Curtis Island, transferring ambulance patients to land-based Ambulance facilities. The highly efficient hull shape allows high speeds and low washes to be achieved in an environmentally sensitive area. The catamaran form allows a roomy main cabin whilst maintaining the sleek underwater shape.

19m Transit Ferry

The vessel is designed for fast crew transfer operations in an area which experiences rough seas. With capacity for 52 passengers plus 2 crew, the 19-metre craft will be operated at a service speed of 22 knots with a full-load deadweight of 6.95 tonnes which is achieved at 70% MCR. The hull form features a high tunnel height and scantlings have been designed for patrol notation to accomodate the high significant wave heights.

20m Whale-Watching Catamaran

This ultimate party boat was launched in September 2007, with seating for 149 passengers. Featuring a large under-cover entertainment area the vessel is suitable for whale watching, dining/entertaining and snorkelling or diving. Rear water access and a waterslide are also highlights. The vessel boogies along at 17 knots, powered by two Cummins QSL9-M engines.

22m Whale-Watching Catamaran

With room for up to 149 passengers, this vessel cruises at 26 knots with 2 x Cummins KTA19-M4 (522kW). The spacious deck layout has been configured for whale watching and casual dining. Dining tables and chairs feature throughout the vessel with a raised wheelhouse for enhanced visibility. Rear water access for snorkelling and diving is also provided, including an undercover bar and external BBQ once back on board.

23m Patrol Catamaran

A rugged patrol vessel that was custom designed to the requirements of the Queensland Police Service. This vessel uses One2three's high-efficiency hull shape which reduces fuel consumption and also gives the vessel seakeeping that allow it to "go out when everyone else is going home." One2three was awarded this contract in a competitive international tender process. Three vessels were built to this design.

24m Commuter Catamaran

This 24m Eco-Jet catamaran is purpose built for commuters travelling between islands and the mainland. Also suitable for a ferry river service, the interior layout has been configured for maximum passenger numbers and easy disembarkation. The low-wash hull form is very slippery through the water meaning quick transit times and low impact on the nearby river banks. Three vessels of this design are now in service, with a fourth currently under construction.

24m Whale-Watching Catamaran

This vessel has been laid out to optimise viewing of whales & marine life. Full walk arounds have been provided on each deck for easy passenger movement, and grand-stand seating is provided on the foredeck for the best views. The internal spaces have been luxuriously fitted out with large windows. The unique styling incorporates a sculptured "Whale-Tail" sun shade, and contract speed was achieved at 85% MCR. Another very happy customer!

28m Dive Ferry

This 150-passenger ferry sets the standard for a Barrier Reef dive expedition vessel! An active ride-control system makes for a smooth ride out to the reef at 31 knots. The large open area on the aft main deck is perfect for dive/snorkel preparation, and a submerged swim platform that spans full vessel width makes for easy water entry. A luxurious seating arrangement with a servery in the main cabin is provided for passenger comfort.

30m Passenger Ferry

A series of 4 vessels that carry 300 passengers and 30 dwt at 28 knots. Powered by twin Caterpillar 3412E engines at 895kW each, contract speed was achieved at 85% MCR. The cabin arrangement is designed for high passenger numbers with a priority on comfort. Large windows provide generous views and ample natural light. External seating on the aft upper deck and a wheelhouse with excellent all-round visibility and external bridge wings.

30m Whale-Watching Catamaran

Multi-purpose vessel suitable for whale watching or commuter ferry service. 320 passengers, 32 dwt at 31 knots with 2 Caterpillar C32 engines @ 1044 kW. A walk-around upper deck designed primarily for whale watching, enabling passengers to obtain a 360-degree view of the vessel's surroundings. The sun deck is provided for an excellent outdoor viewing experience. Large windows provide generous views for passengers and ample natural light.

33m Passenger Ferry

This Low-Wash Passenger Catamaran was built for Fantasea Cruises in the Whitsundays. The vessel accomodates 265 passengers and 23 dwt. Cruising at 31 knots with 2 Deutz TBD 616 V16 @ 936kW, contract speed was achieved at 82% MCR. With a layout designed around comfort and passenger flow, this vessel is the workhorse of the Fantasea fleet.

34m Cruising Catamaran

A cruise and sightseeing catamaran built for Sydney Harbour. Operated by Magistic Cruises, the vessel can carry 300 passengers for unsurpassed views of the harbour at daytime, or luxury dining cruises at night. Its smooth sailing at 18.5 knots with two Caterpillar 3406E engines producing 448kW each. The high-efficiency hull form ensured that contract speed was achieved at only 75% MCR.

35m Passenger Ferry

This 35m passenger catamaran is the most environmentally-friendly vessel operating in Australia. The vessel boasts a lower fuel usage per passenger than a small four-cylinder car and no water-borne emissions. The hulls have been designed for low wash, very shallow draft and no external protrusions, all to protect local marine life. The high efficiency Kamewa waterjets in combination with a Humphree interceptor system provide manouverabilty and a comfortable ride.

39m Passenger Ferry

This 39m Low-Wash passenger catamaran was built for Red Funnel Group, the oldest operating ferry company in the world. This design was selected from a competitive international tender and features engines a whole size smaller than other bidders. The vessel carries 275 passengers and 29 dwt at 38 knots with two MTU 12V4000 @ 1,740kW. Using One2three's high-speed hull shape and lightweight construction techniques, contract speed was achieved at 80% MCR.

One2three Naval Architects: Designers of Monohulls, Catamarans and Trimarans