September 2023 EV Cris Craft is launched

1986 Cris Craft before conversion to all electric

Previously I had a nice 37 foot 1974 Chris Craft for conversion, but it was to large to fit in my driveway at home so I acquired the 28 foot Chris Craft instead.


28 foot Chris Craft in my driveway for the best part of 3 years



two V8 gas engines replaced with twin electric motors using chain drives

The 3600 RPM, 230 VAC, 3 phase electric motors were coupled to the drive shafts using chains and sprockets. This allows for matching the motor torque to the propeller. The extension shaft has two floating bearings, the shaft connects to the original drive shaft with a coupler. Setting the shaft angle and aligning the shafts was a challenge as I had never done this before. A special mount was fabricated that allows for movement in 3 directions allowing alignment with the sprocket on the extension shaft. Even with the chain drive it is fairly quiet. I used standard 230 VAC Vector drives, powered from two 12KW inverters. There are 3 of 17KW 48 VDC  lithium LIPO4 battery packs.

lowering the 17KW 48 VDC LIPO4 batteries into the position were the original gas tank was located

The 3 battery packs helped with the imbalance of weight at the stern but more need to be done.

A pair of joysticks replaced the original controls for the gas engines with two battery displays indicting battery charge and power being used.

simulating gas controls with joysticks

For heating I installed a Marine Air 16K BTU system, it takes about 20 minutes to heat the boat from 6 degrees C to 20 degrees C, it runs on 120 VAC about 1400 watts. I did learn a lesson not to use a mercury type thermostat, it goes a bit crazy when you are rocking from waves. Changed to a micro-switch based thermostat for the winter, it works well. I am presently using a Princes Auto water pump to supply the seawater to the heat-pump. It works very well and is cost effective, but to me it seems noisy so I am looking for an alternative.


the electric heat was replace with a water sourcing marine heat pump located under the dining table seat

I have also removed all propane devises using an electric stove and an electric barbeque. This now makes the boat fully electric.


1100 watts of solar panels

At this time I have 1100 watts of solar panels charging 4 battery packs including the house battery. I also have 120 VAC plug in capability for shore power as an optional charging capability. I  plan on upgrading the panels as efficiency of panels increases. Since I only use the boat on weekends this seems just fine.


side view with new roof and canvas digital TV as well


new canvas and roof on the back deck to help protect the power and drive train areas

The new roof and canvas make it easier to heat the cabin plus gives a nice sun room during the cool fall days.


enclosed back deck and location for dingy or more solar panels.

Estimated range of 100 to 120 Km with a top speed of 6 to 7 miles per hour. As soon as good weather returns in the spring sea trials will begin to confirm my calculations.

A nice option with the power packs was we were able to charge a Leaf car both level one and two.


Also with a smaller 4.5kw 36 VDC portable pack, we used it in the summer to power the EV dingy 3 Hp 230 VAC motor and in the winter it is in my IMIEV car to power an optional Canadian Tire 120 VAC ceramic heater. Works out better than original heating system plus I do not loose any range.

36VDC inverter to 230-120VAC car heating system


13/08/2018 – 2HP Electric Outboard conversion






02/02/2018 – Phase 3 – Update




22/10/2017 – Phase 3

Addition of a 16000BTU HVAC system. Due to the high efficiency of the heat pump this is the ideal option for an all electric boat. It’s being powered by a Solar Inverter System. With an external temperature of 8 to 9C it heats up the whole cabin to 20C is less than 15 minutes.



20/08/2017 – Phase 2




15/08/2017 – Phase 1







As of January 15, we have three drive systems under consideration.

  1. The Mars motor outboard motor (36 to 48 VDC) or Minn Kota thruster (36V), that could be mounted to the transom.
  2. The 3 phase 208 VAC 5 or 8 hp. Electric motors powered from the 48 VDC 3 phase inverter with Vector drive controller and joystick.
  1. We have acquired a 2009 Miles 72 VDC EV van to evaluate removing it’s drive train and batteries to mount in the boat. It used AC motors that are paired to Curtis-Albright AC Motor Controllers.


New Stage of the project – 28/10/2016

For this new stage we’re going to do the electric conversion of a Chris-Craft boat with a combustion engine. The conversion will include several solar panels, a battery bank, a VFD controlled 7.5HP AC Electric motor and a 10kW 208VAC 3 Phase Power Inverter. A heat pump will also be added at a later stage.



AGO Fuel Cells and the parent company A.G.O. Environmental Electronics Ltd are conducting privately-funded experimental research projects into the development of an EV boat built using a 1980 35 foot 10 ton steel motor sailor.  One of the key components of this build will be the inclusion of the Sinopoly Battery International Limited’s 100 amp hr lithium battery bank.




The photo below is the 36 volt 100 amp hr. Sinopoly Battery Limited lithium battery pack model SP-LFP100AHA used for this test. It can be charged with its 115 VAC plugin line charger or via its Zahn 250 Watt DC to DC solar charger. Both chargers cut out at 41.2 VDC with current limiting of 10 amps max.

Please see battery data sheet  for details.

Sinopoly 100AH Specs




Sept. 7/2013 using a Mars DC motor and converting a 9.9 Honda to electric along with
100 amp hr. lithium battery pack response testing of the boat were conducted.

Speed in Knots Current Voltage Watts Hp.
3.0 K 90 amps. 35.5 volts 3195 4.26
3.1 K 107 35.5 3798 5.06
3.6 K 165 34.5 5693 7.59
3.9 K 300 32 9600 12.8

The results indicate that a 5 horsepower 230 VAC Vector drive system will be satisfactory for our application.


The Mars motor outboard Honda conversion is for sale as well for $ 1,500.


EV Mars DC 8 to 15 hp./9.9 Honda electric conversion




We are always looking for partners and interested parties regarding these development projects and welcome contacts and questions regarding these projects and others you may have.



There are a number of systems improvements that we plan to undertake for next season in the area of high-pressure hydrogen storage tanks, ultra-capacitors in place of batteries and electro-mechanical layout. Since we are now able to supply substantial amounts of power from 12 volts D.C. through to 240 volts 3 phase AC we are evaluating such applications as forced air heating, a heat pump system and a portable emergency water and power module for disaster applications.







We sailed to Goldstream in the fall of 2007, in the sloop “Jim D”, which was assisted with a Horizon H300 fuel cell. After an evaluation of the trip, we estimated that the electric motor powering the boat needed to be in the range of 2 to 4 horsepower. As off the shelf solutions were not immediately evident, the plan to modify a Yamaha motor from gas to electric was conceived.



The design was based on available technologies that were easily combined and affordable. The first system was deployed in early June on Ian Soutar’s 18-foot cabin cruiser, “Pepper Pot”. It was on display with the sloop “Jim D” at the Tall Ship Festival in Victoria. The “Jim D” had been fitted with a Minn Kota, model RT202/EM, a 4 horsepower dual electric motor system capable of producing over 200 pounds of thrust. This was a 36 VDC, 98-amp unit that required an even larger fuel cell system than we had originally planned.

YouTube Video
In an attempt to accelerate our development plan, we became involved with the Mechatronics program at the University of Victoria. A group of 5 fourth year mechanical and electrical engineering students undertook the development of a dual 1.2-kilowatt fuel cell system along with finalizing the Yamaha conversion kit. In mid August, a working prototype was ready for deployment. The resulting architecture was even better than we had expected, allowing the operation of up to 4 parallel fuel stacks by one master controller. This would allow for redundancy in the system and permit up to 4.8-kilowatts of power at a much reduced cost.


UVIC students
UVIC students


While the pair of 1.2-kilowatt fuel cells were being worked on at the University and using the B.C government carbon tax refund, the boat was outfitted with 35 watts of Canadian Tire solar panels. They provided sufficient power for local operations of the Jim D on a daily basis. During this period of testing, it was found that only one of the RT202/EM motors was required for the boat to reach a maximum speed of 4 miles per hour, the speed being limited by the 4-inch pitch of the propeller. It was also established that only 550 to 600 watts of power was required to maintain this speed for extended periods of time. As a result, the fuel cell system was trimmed back to a single Palcan PC5, 1.2-kilowatt fuel cell stack.


UVIC students
UVIC students


September and October has seen continued testing of the combination fuel cell/solar power system with very satisfactory results. My appreciation to Palcan for all of their technical assistance and to the Selkirk Station Kayak and Bike for supplying hydrogen this year.


Fuel Cell setup
Fuel Cell setup


In May of this year, I purchased 40 litres of gasoline for the sailboat and after some 150 miles and 5 months of use, I still have about 30 to 35 litres left. The gasoline is used as ballast to help keep the electric motor portion of the gas/ electric hybrid outboard motor under the surface of the water. The other benefit of using only one of the electric motors is that the weight reduction has made it easer to manually lift the outboard into its normal out of water storage position.


Electric Outboard
Electric Outboard


As a result of seeing the news stories about Canada’s first fuel cell assisted sailboat, the Alumni Association of Loyalist College, Belleville Ontario has nominated me for this year’s Ontario Premiers Award for Technology. I will also receive the “Best Innovation Award” from the Esquimalt Chamber of Commerce at the Annual General Meeting, November 19, 2008. I wish to thank those involved for these honors.