Oceanvolt AX8 shaft drive electric motor, Privilege Marine Feeling 32

I like my 168F air cooled Chinese diesel. It's way lighter and cheaper than electric/lithium, and it charges the house battery well. Salt water cooled motors and electrics are bad choices.

Nice system! What is the range at 4-5 knots?

Do you want to sell it?

and regen

By the nine moons of Neptune, turn that damn music off so we can hear the boat under power - so what is maximum range on a single charge? It's a cruel world.

Wish you didn't have the music when you were driving off. I wanted to hear the boat in action

more info needed range and regen power plz

Range?

Waiting for solid state batteries.

Please tell me that you don't run the honda in the cockpit locker even if the exhaust is run overboard.

Rediculous. Is this the future of sailing? That propulsion system cost 10x what that boat is worth. And it returns 1/2 of what the original specs required.
No thanks. Ill keep my Yanmar you greenies can keep this garbage.

How long time will it running in 4 to 5 knots?

Based on the weight of the boat, this boat had a larger Diesel engine than it required.
It could have worked with an engine about a third of this size.

In fact an 8 kW electric engine is still relatively large for this boat. The right size would be about 5kW.

(745.7 watts / 1 HP) * (20 HP) = 14,914 watts
(14,914 watts) * ( 1 kW / 1,000 watts) = 14.9 kW = ~ 15 kW

At lower speeds like getting in and out of a marina there is higher torque and control with an electric motor.

Outside the marina you unfurl the sails and enjoy the wind.

Inside it is quieter and with less fumes.

At $6 to $8 per gallon of diesel. There should be some savings over time instead of a fuel expense.

If the engine is used for leisure, assume the engine is used 5-hours going out and 5-hours return per week, or 10-hours per week.
This is 520 hours per year, and over 10-years it is 5,200 hours.
A 20-HP Diesel engine consumes about 1.25 liters per hour.
This is about 6,500 liters over ten years, this is 1,717 US gallons over 10-years.
At $7 per US gallon, the fuel saved is $12,020 for the main engine.

There are additional savings since this unit is used for the inside house load electricity.

I wonder if Oceanvolt could provide more information on actual expected savings.

Therefore, this installation can be thought of as freezing fuel costs for 10-years until it is time to replace the batteries.
in the next battery change, the battery density should increase and perhaps costs will come down.

The mechanics and electricians did a wonderful job fitting everything into such a small space.

You should remove the music so we can hear how silent the boat is under power...

best I have seen. nice work.

Why do you use 48volt motors? No 12volt motors available or able to do the job?

You replace a 20 hp diesel with a 10 hp electric. Not much power in strong current/tide and headwind. Sailing UMA does much better that that for a fraction of the cost, less than $2000 usd

Electric would be great if the energy density in the batteries could ever be improved enough to approach that of diesel. The noise, maintenance and mechanical complexity of ICE systems would not be missed at all. But the reality is, a simple electric system is too limited in range and a hybrid system just takes all the complexity and maintenance of the ICE and adds the electronic complexity and limitations of a battery system.

So, at a 4 knot cruising speed, 1kWh gets you about 2 miles. How big is the battery bank? Can it be drained completely, without damaging it? A 20kWh bank could produce a 10 hour/40 mile run time, that isn't bad. Does it regenerate power from the prop while under sail well? Love the video!