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Electric Yacht Best Sellers: QT10.0 Sport and Quiet Torque 30.0LC

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• Electric Propulsion
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• Electric Outboard Propulsion

QuietTorque™ 20.0 48v Dual PMAC Motor System

$ 9,495.00

FLASH BLACK FRIDAY – CYBER MONDAY SALE!

The QuietTorque 20.0 provides up to 20kW electric propulsion. 48v plug-n-play system for boats to 45ft. 22000lbs. Similar thrust of an 35 to 40hp diesel.

Motors are made to order and have a one week lead time.

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WINTER 2024 SALE – SAVE UPTO $2000 ON FULL SYSTEM!

The QuietTorque™ 20.0 provides 48Vdc electric propulsion with high sustained output and is ideal for cruisers and day sailors alike.Typically, the QuietTorque™ 20.0 would replace a 25 to 40hp diesel engine. By using dual PMAC (Permanent Magnet AC) motors, Electric Yacht can produce this powerful, compact, Plug-n-Play, light weight, air cooled system and stay within the safe low voltage standard. Typical battery size is 400Ah at 48Vdc. These systems can be installed by a competent boat owner using simple tools and the easy to mount Electric Yacht system. To be prudent, we recommend that a certified marine electric technician review the completed system. Each system is engineered for your boat to maximize the speed and range of the boat. The System is backed by Electric Yacht’s three-year limited warranty.

Specifications

Motor type: 2 PMAC* Brushless Voltage: 48 Vdc Current: 400 Adc Max power input: 20.0 kW Weight: 135 pounds Frame: Anodized Aluminum *Permanent magnet Alternating Current

Standard Features

Designed for hybrid installations using a generator or renewable power sources while underway

• Current sensor monitors charging current providing for accurate SOC readings
• Automatic thermal protection prevents over heating while maintaining maximum possible power under all operating conditions
• Auxiliary cooling fan provides for high sustained output even when sharing space with a diesel generator

Motor Mounts Adjustable Mounts to current engine stringers

Throttle Anodized Al waterproof throttle with key & neutral lock

Digital Display

• State of Charge (SOC)
• Voltage, Current, Power and motor RPM
• Program battery type and size
• Time to Discharge based on current power consumption, updated in real time
• Programmable regeneration and max power
• Monitor charge and discharge current and power plus motor and motor controller temperature
• Current sensor for monitoring charging current, ensuring accurate SOC calculation when running a generator or renewable energy sources

4″ flange coupler (Hurth/Borg Warner)

Power Switch Blue Sea two position switch

Relay 500amp vacuum relay

Fuse Class-T fuse & holder

QT20 Product Data QT20 Product Drawing

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Related products

QuietTorque™ 30.0 LC 48v Liquid Cooled Dual Electric Propulsion System

QuietTorque™ 10.0 48v Electric Propulsion System

QuietTorque™ 10.0SD 48v Electric Saildrive System

QuietTorque™ 15.0LC SD 48v Electric Propulsion System

Electric Yacht Best Sellers: QuietTorque 10.0 QuietTorque 20.0 QuietTorque 30.0LC

• Electric Propulsion
• Conversion and Stories
• Product Data Sheets
• Installation Manuals
• Customer Stories
• Is Your Boat in this List

Electric Propulsion Products

Electric sailboat propulsion systems.

Plug-n-Plan marine systems designed to be installed by you or a marine professional. Engineered for your boat and warranted for 3 years. These systems are bench tested and arrive by FedEx on your doorstep ready to be installed . Our years of engineering and hundreds of installations in North America make us the most reliable and least expensive and well proven solution to replace your old gas or diesel boat motor. Ideal for Sailboats.

QuietTorque 10.0 48v

Replacing diesel motors up to 20hp    Plug-n-Play  -  Ready to Install      

• QuietTorque 10.0 48v          $5295              Air-cooled  single PMAC powerhead System - Suitable for sailboats to 12000lbs.
• QuietTorque 10.0SD 48v       $10495              Air-cooled  single PMAC powerhead System - Saildrive - Suitable for sailboats to 12000lbs. 

https://electricyachtca.com/product/quiettorque-10-0-electric-motor-2/ 

Other Systems

• QuietTorque 15.0LC 48v   
• QuietTorque 15.0LC SD 48v   

QuietTorque 20.0 48v

Replacing diesel motors up to 40hp

Plug-n-Play  -  Ready to Install

• Quiet Torque 20.0 48v            $9495                Air-cooled dual  PMAC powerhead System - suitable for sailboat to 22000lbs 
• Quiet Torque 20.0 SD 48v     $14695           Air-cooled dual PMAC  powerhead System - Saildrive - Suitable for sailboat to 22000lbs 

https://electricyachtca.com/product/quiettorque-20-0-electric-motor/

QuietTorque 30.0LC 48v

Replacing diesel motors up to 55hp

• Quiet Torque 30.0L C48v        $15495 Liquid cooled dual  PMAC powerhead System - suitable for sailboat to 30000lbs 
• Quiet Torque 30.0LC SD 48v   $20995       liquid cooled dual  PMAC powerhead System - Saildrive - Suitable for sailboat to 30000lbs 

https://electricyachtca.com/product/quiettorque-30-0-lc-electric-motor/

Other Electric Yacht Systems

• Quiet Torque 45.0LC 48v  
• Quiet Torque 60.0LC 48v  

Batteries - Chargers - Outboards

Systems that support the Electric Yacht Propulsion Systems

Quality AGM Batteries

• Lifeline 2v, 6v, 12v batteries

Quality Lithium LiFePO4 Batteries

• Dakota 48v 96ah   $2699
• Battle Born 12v 
• ePropulsion 48v batteries

https://electricyachtca.com/product-category/batteries/

High Quality 48v Marine Chargers

Quality Marine Charger for 48 to 96v

• Delta Q !C1200
• Delta Q -1500
• QuickCharge 15 & 25a chargers
• PowerMania chargers

https://electricyachtca.com/product-category/chargers/

ePropulsion Outboard - & POD Systems

ePropulsi 1kW with integrated 1kW Lithium battery

• Spirit+: 1kW with intagrated 1kW Lithium battery
• Navy 3 : 3kW 48v outboard replacing 5 to 6hp outboards
• Navy 6 : 6kW 48v outboard replacing 9.9hp outboard
• Pod 1 : 1kW under boat mounted 1kW pod motor
• Pod 3 : 3kW under boat mounted 3kW pod motor

https://electricyachtca.com/product-category/outboard/

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electric propulsion

Will it work for me.

Electric propulsion is an ideal way to push a sailboat.  It may also be appropriate for some trawler displacement boats:

• Ideal for day sailing - less than 4hrs motoring.
• Good for coastal cruising when combined with ranger extending portable generator.
• Ideal for long range cruiser when combined with regeneration, solar, and marine generator.

Why Electric Yacht

• Anodized aluminum frame dissipates heat and thrust management is a compact package.
• Weatherproof stainless steel throttle control and key switch 
• Digital display provides feedback on motor operation and battery state of charge (SOC)
• 14 gearing ratios for max performance with tooth timing belt 
• Includes shaft coupler, power switch, Class-T fuse, fuse holder, and relay complete the package. Add batteries and charger to to get your boat moving on the water.
• Three year warranty and superior support from design to commissioning.

Plug-n-Play System vs DIY  

• DIY kits are a box of parts.  Not assembled and tested with limited or no warranty.
• Electric Yacht systems are complete: add batteries, charger, and cables.
• Compare to the competition…we think you will agree an Electric  Yacht Quiet Torque™ electric propulsion motor provides the best value  available today

TERMS YOU HEAR

Diesel “Equivalency”

• Electric propulsion is very defined as it has a flat torque curve (torque is rotational power).  When comparing electric to diesel, electric is superior at slow to medium and equal to diesel at higher RPMs.

Rating Systems - HP vs KW

• 746 watts = 1 hp
• Diesel engines (BHP) is 10% to 20%. over-stated for marine engines at the propeller (PHP)

The Propulsion Curve

• The power required to push a displacement hull with a waterline  length of 25’ – 40’ will increase 1.5- 2 times for each knot of speed. 

Maneuvering Thrust

• Electric propulsion maneuvering is superior  performance to gas or diesel.engine of higher rating. Electric propulsion with controlled power from 0 RPM to full RPM, makes for superior maneuvering  performance. 
• Instant power, no warm up and quiet operation of an  electric motor make for superior overall performance.  

FAQ - There is only one question! Will Electric Propulsion work for me?

Not for everone!

The typical electric boat will have the same range as if they left the dock with about 1.5 to 2 gallons of fuel.  If you sailed 20 times and used less than 20gallons of fuel - it great.  If you sailed 20 times and used 200 gallons of fuel, buy a powerboat.

Electric propulsion will give the sailor another tool to use when sailing.  Add a little power and you can sail faster and point higher.Not for all.

In the marina and around the dock much safer - ultra speed control - forward to reverse and back - quiet to talk to the crew and those on the dock - quiet to help setting an anchor.

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(626) 298-2262

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Electric boats

We drove the 500hp electric arc sport and it literally knocked us off our seat.

Arc has built the first models of its much-anticipated Arc Sport 500hp electric wake boat, and we got a chance to take it for a quick demo in Long Beach, CA and holy heck, this thing rips .

Arc is a very new company – it was founded in 2021 in Los Angeles, and is targeting the luxury boat market with high-powered electric boats. Its cofounders, Mitch Lee and Ryan Cook, are engineers who met while working at Boeing.

The company has since grown to over 100 employees, and the company boasts that many are former SpaceX, Tesla, and Rivian workers (like, well, every other electric startup).

But it seems to have something to it, because Arc has been able to raise over $100 million in funding so far – not a bad chunk of change to get things started.

The Arc Sport, announced in February , is not Arc’s first boat. It previously released the Arc One , a limited-edition, $300,000 speedboat, of which only 20 units were made.

But the Sport is a wake boat, a more specialized type of boat, and it’s a downright steal compared to that model, starting at the low-low price of $258,000. Pocket change, really (although, an early tricked-out “Founder’s Fleet” model with all the options and extras included will cost $322k).

This is by no means cheap, but is relatively competitive with the higher-end wake boats from companies like Nautique or Malibu (Nautique has its own electric wake boat , which starts at $312k).

Wake boats have been growing in popularity lately, both for standard boating activities and for wakeboarding/wakesurfing. Wake boats need high power along with specialized control surfaces and ballast control to help make a large, surfable wake behind the boat.

They also include a tower to attach a tow rope to, so wakeboarders can get up onto the board. The Arc Sport has an adjustable tower which raises and lowers, to offer a higher angle to help pull riders up out of the water, or lower clearance in case that’s needed for navigating around a marina.

Electric drive has a lot of benefits for this application – many of which are familiar from the world of automotive. For one, when wakeboarding behind the Arc Sport, you aren’t constantly choking down fumes and getting loopy from exhaust mere feet from your face in an otherwise beautiful natural lake environment. Which is quite a plus.

The weight penalty of the Sport’s massive 226kWh battery isn’t that significant, either. Wake boats typically benefit from having a lot of mass at the stern of the boat – and will intentionally take on water as ballast to ensure that the rear is as low as possible in order to throw a larger wave. So a chunky battery, sited low in the stern, is fit-to-purpose anyway.

And, like in electric cars, an electric motor has high torque at zero rpm, which means it has… A LOT OF GET-UP-AND-GO.

Arc used a low (2,000) rpm semi truck motor with direct drive (no gearbox) to reduce noise and friction and ensure high torque, which means we literally fell right out of our damn seat the first time they punched it. Arc says it has twice the torque of competing boats, and it sure felt like that.

An electric motor is also easier to put where you want it, so there doesn’t need to be a big, loud, hot, vibrating mass in the middle of the boat (where engines often go), making it easier to use that space for socializing or moving around inside the boat. The motor in this case is pretty centrally located, under the floor of the boat.

The boat is quite quiet at low speeds and some light vibration can be felt through the floor, but it’s a lot less than you’d get from a fossil machine. Though between the noise of splashing water, buffeting wind and 500 horsepower, things get a bit noisier when getting up to the electronically-limited top speed of 40 knots.

I’ve spent a fair amount of time around boats myself, growing up alongside a harbor and in a boating family. Not much of that time has been spent piloting anything impressive, but I’ve been at the helm of a few boats here and there. As for electric boats, all I had piloted before now were Duffys and the like – low-speed cruisers, nothing like this.

After getting a quick demo ride from Arc, it was time for me to grab the helm and go for a spin. I did a few figure-8s, making wake for myself to cut through, and felt that extreme acceleration on my own (which was… easier to stay seated during when I was actually prepared for it).

And once I started, I really didn’t want to stop (but then again, that’s often the case for a day of boating, isn’t it?). The boat handled great in the flat water we had it in – and the choppier water once I laid down some wake to blast through.

The captain’s seat was a little tight on legroom, but this is adjustable and Arc is looking to increase the amount of adjustability on the production version. And the throttle was pretty twitchy, which is bound to happen with so much power, but Arc was thinking about smoothing out the mapping of the throttle lever, which I think would be a good idea. Luckily, Arc has complete control over the boat’s software, so tweaks like this are possible and there could even be user-selectable drive modes.

This is another way that Arc distinguishes itself: through a sleek modern interface updatable over-the-air. Some boats have the ability to update maps over the air, but Arc says it’s the first to be able to provide Tesla-like updates to software that’s deeply integrated into the boat.

The UI we saw wasn’t finalized, but what we saw worked well and had various aspects of customizability, like simple controls to adjust the wake, and the pitch of the boat in the water, or to look through one of the boat’s three cameras. One neat aspect was a small red bar on the pilot’s display showing when your steering is centered, which is something that’s easy to lose track of in a boat.

We didn’t get to test out any connectivity/app features, but remote management of charging, checking the cameras on the boat, and so on, seem like natural features that will come down the pipe.

As for the practical parts, the Arc sport is 23 feet long with comfortable seating for 15 (though make sure you’re holding onto something when the pilot punches it), lots of cupholders (Arc told us the final version might even have more), good room for storage under the seats and rear deck (another benefit of electric drive, more storage space where the motor would go), and board storage on top of the adjustable tower.

It also has a set of side thrusters on the bow and stern which help with precision maneuvering, which can be a great help while docking, particularly for less-experienced pilots.

And maintenance should be easier too. Boats are famously a nuisance to keep in good running order, given that they sit parked in a corrosive substance full of strange plants and animals for literally all of their lives. That’s no different here, but at least you won’t have to worry about fuel going bad or winterizing the boat.

Most docks have 240V service for shore power, and Arc’s boats can just stay plugged in (while 7-10kW service means 20-30 hours for a “full charge” of the 226kWh battery, it’s rare that you’ll have a boat out more than ~4 hours in a day anyway). And it’s a lot cheaper to fuel than paying marina rates for gasoline. The Sport is also capable of 225kW CCS DC charging, for the few marinas that have installed DC fast chargers (there’s one in Tahoe ).

That brings us to the “range” question, which is a different set of calculus for boats. Arc says the massive battery is good for 4-5 hours of use, though that depends highly on what you’re doing. If you’re just cruising around at low speed, that time will be extended tremendously. If you’re doing constant start-stops or running at high speeds, you’ll use a lot more energy (water is thicker than air after all – there’s a much bigger speed penalty to efficiency on water).

Arc said it took the boat out to Catalina Island, which is 26 miles across the sea from the California coastline. On the way out, they kept it conservative, and used about 10% of the battery. Then they camped overnight and bombed back to the mainland the next day at high speed, and ended up with about 35% left by the time they got back. So that higher-speed trip used ~5x as much energy as the low-speed one did (there may have been differences in wind/waves as well). And 50+ miles on the ocean, with range to spare, is quite a day or two of boating.

But for the most part, these machines will be used on lakes or in calm waters anyway, so it should be more than enough for a great day out.

And in a nice lake environment, the underlying benefit of an electric boat becomes exceptionally clear. These are sensitive and contained environments, so adding anything foreign to them can really screw up the ecosystem. The less nonsense we can bring into lakes, in the form of fumes and oil and what-have-you, the better.

The quiet and lack of exhaust really enhance the experience of boating, but unfortunately Arc doesn’t have a solution to one problem: everyone else. While boating around we still occasionally had to smell the stench from some passing boat, and the water surface near the docks was still oily due to the activity of other boats.

And that’s going to end up changing – some marinas and lakes are already giving out separate electric-boat registrations, and charging significant extra money for launching gas-powered boats due to the environmental damage they cause, which electric boats don’t have to pay. Local pushes to clean up lakes are quite strong – the preponderance of “Keep Tahoe Blue ” bumper stickers throughout California suggest that as more options become available, restrictions on dirtier options may well increase.

So lets keep our eye on the prize here – not only is the Arc Sport a pricey-yet-capable toy, it’s also the vanguard of an industry that’s about to change for the better. Our whole Earth is heating up and getting dirtier with every gallon of dino-juice we bleed from this precious planet of ours, so why not keep some of it deep underground where it belongs instead of on the surface of our lakes and marinas.

Arc is kicking off its nationwide demo tour today , which you can sign up for here . They’re still not the full production boats, but they’re close. Arc has started taking orders (you can reserve one for $500 ) and plans to deliver boats “this year” (with the Founder’s Fleet all being delivered by next summer), with an eventual goal of producing “hundreds” per year.

FTC: We use income earning auto affiliate links. More.

Jameson has been driving electric vehicles since 2009, and has been writing about them and about clean energy for electrek.co since 2016.

You can contact him at [email protected]

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