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The Fischer Panda 13KW x 48VDC generator is mounted in the starboard forward hatch away from living areas. It is barely heard running and is easily serviceable.

A DC generator is far more weight and fuel efficient than AC counterparts. Because it is powering batteries it can always be driven at peak efficiency, delivering optimum load even at anchor with minimal fuel consumption.

The generator maintains all ships electrical systems while motor cruising at 5-6 knots using the electric motors and keeping all the batteries in balance.

The battery management system automatically starts and stops the generator as the lithium batteries require.

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Battery Banks

The 48V Lithium (LiPO4) battery banks are mid mounted in each hull, each bank comprises 4# x 12V x 180Ah batteries. The battery chemistry offers high power density and fast recharging, the generator delivering 240A at 48VDC. Each battery cell has a monitor and LED indicator checking status once per second, reporting to the overall Battery Management System (BMS) for comprehensive safe monitoring.

Diesel fuel is managed by pumping through a filter between the port or starboard tanks or recirculated to the same tank to allow polishing & condition of the fuel

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Electric Motors

CAT ION uses the Fischer Panda “Whisper Prop” system.

2 x 10KW 48V permanent magnet electric motors, directly drive the shafts and propellers. The system uses a saltwater heat exchanger, oil cooled motors and cold plate water cooled electronic regulator and commutators.

Unlike diesel engines, no maintenance is required. There is no gearbox, engine heat or oil/filter changes.

Intelligent controls provide built in safety, if a propeller become fouled or the cooling system blocked, power to the engine is automatically cut or reduced.

The yacht is kept secure by requiring an “ignition key” in order to use the motors. Power is then immediately available to the motors and RPM is controlled by traditional twin throttles.

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The Battery Monitor reports upon the state of charge and condition of the Lithium batteries. User selectable parameters can be displayed which include voltage, charge in/out, battery “fuel” available, etc.

The monitor automatically starts and stops the generator according to the needs of the batteries. A manual start/stop is available to anticipate forthcoming events, such as arranging for a full charge before coming into harbor.

The Lithium batteries continuously recharge the 2# x 12V x 55Ah Optima house batteries that provide power for winches, autohelm, and navigational instruments.

The 5KW 120VAC mains inverter is powered by the Lithium batteries, and runs the microwave, water-maker, washer-drier, air conditioners and general household items.

Solar panels mounted on the Bimini over the cockpit replenish the Lithium batteries.

The Tank Level Indicator shows by gauge the status of the fresh water, holding, and fuel tanks

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Water Maker

An ECHOTec Model 780 AML 2, 120V / 8.4A water maker is located under the stern starboard lazarette and produces approximately 32 gallons (123 litres) of fresh water per hour

A water boost (lift) pump is used to raise sea water for the HP pump. The membranes are protected with carbon back-flush and sea water particle filters with newly made water passing through a mineral filter before filling the 2 x 75 gallon water tanks.



Whilst sailing, the electric motors can made to work like a generator and feeds energy back into the lithium batteries. “Re-generation” can allow you to motor from a dock, sail and return without using any diesel.

Regeneration requires the feathering props to be opened and rotating the shafts while sailing to drive the generator (electric motors). The helm throttle is used to vary the RPM, more resistance in the water generates more power against a reduction in boat speed.

The theoretical charging output is equal to the full nominal power of the motor controller, each being 10kW. In practise that cannot be achieved, you would be unable to overcome the resistance in water required to rotate the propellers. A more practical SOG >7 knots is required to then then sacrifice 1-2 knots and gain @ 480W on each motor.

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Raymarine VHF DSC, autohelm, digital radar, AIS, instruments, Sirius weather, LifeTag man overboard, E127 hybrid touchscreen MFD, C95 MFD, Smart Pilot, RCU-3 remote and iPAD/iPhone network screen Apps.

ICOMM M802 MF/HF long range communication

Lewmar powered helm control & Whitlock Mamba shaft and gearbox system

Quick 1400 electric windlass, Harken powered winches

Selden mast with track and roller batt cars, Furlex 400S jib & Harken screecher furler.

Sail set includes: - fully battened Main with antal clew, roller furling Genoa, roller furling Screecher, self tacking Jib, assymetrical Spinnaker.

85–265 VAC 50/60Hz battery chargers allow any shore power to be connected, with inverted 120 VAC 60Hz maintained aboard.

FM/AM/Sirius radio (lifetime subscription), Toshiba HDTV, Apple TV, AirPort Express music streaming, Badboy WIFI booster.

120VAC outlets, LED lighting, dimmable LED, USB charging outlets throughout. Paneltronics 120VAC and 12VDC breakers

LED automatic mast head anchor lights, LED navigation lights, red/white cockpit lights, deck lights, remote control davit lights, blue stern underwater lights.

LPG gas hob, LPG oven, microwave combination oven, LPG Magma BBQ, Splendide 1200S washer-drier.

Offshore flare packs, life jackets, EPIRB, Life Sling, DAN buoy, throwing lines & buoyancy ring, emergency tiller.