Performance and engineering
Forty knots, quietly.
Everything on this page is measured. Speeds are from sea trials at light load. Range carries a ten per cent reserve.
- 40
- knots
- Top speed (74 km/h)
- 30
- knots
- Cruising speed (56 km/h)
- 300
- nm
- Range at 24 knots (556 km)
- 1,450
- hp
- Power (1,066 kW)
- 16.95
- m
- Length overall (55 ft 7 in)
- 22,400
- kg
- Displacement, light (49,400 lb)
The cutaway
- Owner’s cabin, forward
- Helm, three displays
- Galley
- Cockpit lounge and sun pad
- Twin 725 hp diesels
- Gyro stabiliser
- Lithium bank, 20 kWh
- Pod drives, forward-facing propellers
A sharp entry
and a flat run.
The bow is fine and nearly vertical, so the hull cuts the water. Deadrise eases from the bow to nineteen degrees at the transom, with two spray rails to keep the deck dry. Interceptors at the transom trim the boat without tabs.
Twenty-two tonnes,
and no more.
The hull is infused in one shot: glass and vinylester over a foam core, with carbon in the stringers and the engine beds. The top is carbon. Light displacement is 22,400 kilograms, which is what forty knots asks of 1,450 horsepower.
Two pods,
one hand.
Twin 725 horsepower diesels drive two pods with forward-facing, counter-rotating propellers. A joystick walks the boat sideways into a berth. Position hold keeps it over the sand while the anchor goes down.
Six hours
of silence.
A twenty kilowatt-hour lithium bank runs the boat at anchor without the generator: the galley, the lights and one cabin’s air for six hours. The gyro holds it still at zero speed.
| Figure | Metric | Imperial |
|---|---|---|
| Principal | ||
| Length overall | 16.95 m | 55 ft 7 in |
| Hull length | 15.70 m | 51 ft 6 in |
| Beam | 4.78 m | 15 ft 8 in |
| Draft, to propellers | 1.32 m | 4 ft 4 in |
| Displacement, light | 22,400 kg | 49,400 lb |
| Displacement, half load | 24,600 kg | 54,200 lb |
| Fuel | 2,200 L | 581 US gal |
| Fresh water | 480 L | 127 US gal |
| Black water | 160 L | 42 US gal |
| Grey water | 120 L | 32 US gal |
| Performance | ||
| Engines | Twin 725 hp (533 kW) six-cylinder marine diesels, 1,450 hp (1,066 kW) combined | |
| Propulsion | Twin pod drives with forward-facing counter-rotating propellers. Joystick docking. Position hold | |
| Top speedSea trial at light load | 40 knots | 74 km/h |
| Cruising speed | 30 knots | 56 km/h |
| Economical cruise | 24 knots | 44 km/h |
| Range at 24 knotsWith a 10% reserve. 260 nm at 30 knots | 300 nm | 556 km |
| Hull form | Sharp-entry warped V, 19° deadrise at the transom, two spray rails, transom interceptors for trim | |
| Stabilisation | Gyro stabiliser, effective at anchor and under way | |
| Build and accommodation | ||
| Hull and deck | Resin-infused E-glass and vinylester over a foam core, infused in one shot. Carbon in the stringer grid and the engine beds | |
| Hardtop | Carbon fibre, matte finish, with an opening glass panel, carried on a single raked central pillar | |
| Metalwork | Brushed bronze: rails, cleats, bar, wheel hub. The wheel rim in oiled oak | |
| Decking | Pale sand composite with dark caulking lines | |
| Power at anchor | 11 kW generator. 20 kWh lithium bank: galley, lighting and one cabin’s air-conditioning for six hours without the generator | |
| Design category | B (offshore), 12 persons | |
| Guests, day | 12 | 12 |
| Cabins | 2: owner’s cabin forward under a full-length skylight; guest cabin amidships with two single berths that convert to a double | |
| Berths | 4, plus one optional crew berth aft | |
| Bathrooms | 1 en suite, 1 day head | |
| Galley | Below, to port of the companionway, with a second cold store at the cockpit bar | |
| Naval architecture and design | Maren, in house | |
| Build | Queensland, AU | |
Figures from sea trials and the build specification. Performance varies with load, fuel, sea state and equipment.