Saw the updates on Wynns' 44. Awesome!!! Eagerly awaiting Wynns back at Sea!!!

Congrats! Looking forward to seeing Wynn’s HH!

I'm not a sailor, but I have been watching the "Gone With The Wynn's" KZfaq channel, which is where I first learned about your company and the amazing boats you build. This was a very interesting video to me because I've been interested in solar-powered systems, be it boats or RVs and it seems to me that you all have got it figured out and are putting it into finished products. If I ever got into sailing I would definitely be looking at HH Catamarans first simply because they look good and the builds make sense for life on the water.

I've been waiting for years for a design like this to come along. I've been dreaming of a hybrid sailboat for some time. You guys did it and more... I hadn't thought of the hydro generation as a meaningful source of power, but it could be a crucial source at night under passage. Bravo!

The mega solar, big batteries and the hybrid drives is very appealing. I'm looking forward to it ; )

I don't know why anyone looking for a cruising performance catamaran would look any further. A brilliant solution

Man, I hope to be able to buy one of these someday! Dream sailboat!

Loving this concept.

Outstanding stuff!

Sooooo looking forward to the Wynn's getting their boat :)

Fantastic!

Looks amazing

Love it, it on the bucket list - OC model....

Well-done Gents!

I agree. Youre diesel engine is number 1. This is a best of both worlds. Nice one

Something I’d love to hear more about is motor-sailing in light/variable wind with the electric drive for short periods. Could really be a godsend for night shifts and not waking the crew ❤

Awsome.

Perfect. One day I will have the money to buy this :-)

My dream set up!

Awesome cat!

Subscribed! 🔔 Liked, shared, fav-added and bucket-listed.

Thanks for a good summary. Electric drive is definitely the way to go, and it seems you've chosen a very sensible hybrid system, battery and solar size, etc. 43 KiloWatt-hour battery bank. KiloWatt-hours are a measure of energy. KiloWatts are a measure of power. Energy is power integrated over time. They are not the same. BTW, that is about half the capacity of an electric car battery. Two hours of electric motoring is way more than enough to motor out of a marina, off a mooring/anchorage, etc. And all of the energy used to motor can be replaced by hydrogeneration if there is enough wind to sail. Feedback: the microphones need to point at you for best sound. James was a bit hard to hear.

What an impressive product! I especially loved the American at the end and how I miss that Sailing Family.

It's a beautiful boat looks like a mix of Balance and Gunboat

Awesome! I think it’s time to start designing the next version in the series. Meaning, a 54’ version of this new style of cat! The ‘4’ could represent the electric/diesel propulsion with the newly designed sugar scoops!

Awesome boat !!! Good job on its creation!!! Might I suggest adding a little more aerodynamics to the boat by adding a leading edge to the mast . 🤔

When does the lottery drawing start to win one of these?

Sirs, it's wonderful that you're posting these videos and underlining the topic of electrification for boats. I'm an owner/skipper of a Lagoon 52, wishing for an electrified future. I love that your approach to this is starting from scratch and designing the whole thing around propulsion and energy storage. A couple of issues though. To me, having both motors coupled to a single mechanical clutch kind of takes away from the redundancy argument. One could see that clutch as a single possible failure point and would want to see how long those could last with regular operation. Another point is that the 10 KW e-motors for this size boat are very small for marina use or for putting up sails in windy conditions. Yes, there's the instant torque, but I don't see it being able to take the major role for those operations, so why should I invest in extra complexity?

🤔Clearly hybrid is the common compromise until the fully marine EV technology arrives: As in 'GMG's' Batteries - Multi-spectrum solar - low friction hull treatment solutions etc. Until then, it's _still_ a Diesel - and all the moving parts and dramas that go with them will prevail. 👍That said, I am certain that your eventual E-Vessel design will be stellar! All the best.

Great sounding boat. What are you doing to avoid lighting strike taking out the whole boat, what systems are installed?

Very nice, looking forward to a fuel cell and getting rid of the diesels completely. Look at SilentYacht for another approach. Look at OptiVolt to minimize shading. Excited for the future of this!

LOVE THE CONSEPT OF THE ELECTRIC HYDRID SYSTEM. ONE THING YOU MAY CONSIDER IF NOT ALREADY DONE SO IS IN THE SPECTIFICATION FOR THE ELECTRIC MOTORS TO ALLOW A HIGHER VOLTAGE THAN THE PRESENT 48V WHICH AS FAR AS I KNOW IS THE LIMITING FACTOR FOR THE 10KW RATING OF THE MOTOR. IF THE SYSTEM IS USING PROGRAMABLE REGULAR / SPEED CONTROL THIS WOULD NOT BE AN ISSUE (SETUP UP TO 48V AT PRESENT BATTERY TECHNOLOGY BUT NOTE THAT PROPELLER SHAFT STILL WILL NEED TO BE ABLE TO TAKE THE FUTURE UPGRADE OF VOLAGE AS WELL MECHNICAL LIMITS). THIS WOULD ALLOW THE CUSTOMER WITH FUTURE ADVANCES IN BATTERY DENSITY TECHOLOGY ALLOW FOR POTENTIAL INCREASES IN OUTPUT OF THE MOTOR BEYOND THE 10KW WITHOUT HAVING REPLACE THE MOTORS BY MEANS OF JUST CHANGEING THE SETTING IN THE REGULAR / SPEED CONTROLLER WITHIN REASON. JUST A THOUGHT AND ARE YOU CONSIDERING TO EXPAND THE DESIGN LINE PAST THE HH50

@HH Catamarans . Beautiful cat and design. I like the idea of the electric motors being used to generate electricity from both the diesel motors and through hydro regeneration from the props. Do you have figures on how much charge you get from certain hull speeds and how many revs on the diesel to generate 5 Kw . Why have you decided to put the motor onto a shaft drive. Could you do the same sort of system to a sail drive? I would go for the David solar panels extras and more batteries and drop my speed from 7 to say 4 -or 5 knots which must extend your range significantly, no? Do you have numbers on those options?

Great idea and been wondering for a while why the concept of hybrid drive from cars had never made it's way into boats. Was wondering what the decision making was on shaft versus saildrive as this would move motors back in hulls as well giving more usable space. If I ever win lotto definitely on my list.

I was thinking that a sunken front cockpit and a raised steering station was a good idea until I saw Windego's? unique and very smart solution that puts steering in a sunken front cockpit. Genius assuming it's dry and protected as well.

On a good strong wind how much power can the ecodrive generate? I ask because I live on the bay of Fundy in NS Canada, and the tides run at almost 18km/h. Some companies are docking big ships with massive generators and sending the power ashore. I am wondering how much the ecodrive would generate during a 6 hour window at those speeds.

Great video. Watching these with great interest. I was wondering how much generation you get from the free props?

Hat tip to HH for making it happen. And for not confusing KWh with KW as so many others! That being said, this could have been done 3 years ago, and right now, you are not at the bleeding edge; you are just middle of the road of big brands’ developments. I get the self-glorification that’s the purpose of these videos, but let’s not fool ourselves: This is as basic as it gets today. PS. No, the diesel engine is not “known and loved”, it’s simply tolerated because we having got anything better. So again, kudos for getting it done, but let’s push a bit further…

When at anchor, given that there is a sufficient current, say 2 -3 knots or more, can the prop still be used to charge the battery like when under sail? I know there are areas, particularly those with high(ish) tidal extremes where the currents can get quite high for a few hours either side of high or low tide, this could present a significant charging opportunity.

I love this when concept. Definitely no 1 on my list. Question. In theory on a sunny day what speed could you cruise at using only the power of the solar panels. As an example in the doldrums.

Since the Props will either be in drive mode or regen mode, are you going with folding props, or much larger more efficient fixed props? For weekend or near shore sailors there is an interesting mode - if are not quite making a buoy, floating debris, or some other obstacle due to the direction or wind speed, you can just give yourself a few seconds of power on one electric engine, rather than starting up a diesel, shifting into gear, a few seconds of power, then shutting it down.

FYI - This is a diesel boat with a little bit of assistance from solar. The 4000 watts of solar panels pointing straight up will not generate anywhere near 22kwh per day. ALL land based panels are angled at the sun for a reason. That along with dirt, dried salt spray, water droplets etc. and even less with the shade from the sails, it will rarely exceed 50% and average about 30% of the supplier's "rating". Also, I suspect the owners of a $1m boat will want to use a/c, especially in the brightest of sunlight in tropical areas where solar will thrive but the cool won't. The a/c alone will use more power than these panels will supply. The a/c, along with refrigeration, desalination, bilging, electric cooking, cloths washing etc. will require shore power or diesel power just sitting there never mind moving. Most non-high end cruisers will forgo a/c due to the amount of power consumed. Even large battery banks will not be sufficient. Wealthy cruisers will not likely be quite so frugal. I was kind of shocked when the Wynn's had family guests on board in one episode and still refused to turn on the a/c because of the diesel it would use, even after complaints of the close quarters and high humidity. As a non-boater that hates being overheated and as a tall lanky person that also doesn't like confined spaces too much, I don't think I would be returning to that boat, even with Nikki there.... ok, maybe I would!

Would you ever think of adding an underwater foil - perhaps connecting the two hulls like Aquila 36 and 44? This is supposed to dramatically lift and improve performance over 15 mph? I think it might add some grief during haul-outs occasionally, would be a question.

Does it exists without the sails ?

Alibi tried regen with electric propulsion 10 years ago but struggled with the charge cycles an ultimately gave up and went with diesels only.

How about silent yachts?

Is it possible to cover the body with solar panels like sunreef 80 eco?

What is HH catamarans stance on the Sunreef 80 design with the array of solar panels on the side of the hulls and incorporated in the mast. The efficiency of the panels and the batteries?

What do you do for fire protection in the battery room?

Love the concept! So when you say it can motor for an hour under battery only, is this under the premise that it’s ideal conditions of no wind and flat water? You mention it’s used on canal boats and that’s what they see, so wondering how that range translates to a pretty normal 15kts on the bow motoring into 1-2 foot chop?

I hear a lot of times that no builder has done this before, however I've seen Sunreef building Eco Cats (I do not consider them performance Cats they are heavy and very luxerious) but they put solar panels on the hulls and mast and generate a lot more of Electric power.

could you theoretically anchor at a place with a strong current to charge your batteries too?

Add sailing wings please!

why a shaft instead of placing the motor as a pod outside of the hull? Seems to reduce failure points

I guess I understand why Nicky and Jason Wynn wanted to buy this catamaran, and have one in process. I was a little hesitant getting behind their decision, since it didn't seem to answer all of my questions, but this certainly does. If I was in a position to be buying one of these, I would want some changes made (I don't like the cockpit layout) but I wonder if it would be possible to double the size of the battery bank. A Tesla Y sport model has an 80kWh battery, and they exhaust it in 325 miles or so. With the price of fuel, at least here in the U.S., hitting record highs, I'm sure that diesel fuel elsewhere must also be climbing, so the less I need to run the engines to recharge the batteries will an anchor, the better. But, I don't know if it's worth the extra cost of 40 additional kilowatts of battery capability. Still, thank you for this great presentation of the EcoDrive.

The HH44 is a beaut of a boat. The Maverick 440 Hybrid built in South Africa has been on the market for a while now. Not exactly the same configuration using twin Oceanvolts and and a GenSet and definitely not a performance cat.

Who do you source the batteries from and what is their chemical makeup? Are they cobalt free?

How many RPM does motor need to rev to generate 3, 4, & 5 KW? When at anchor?

Since I'm based in the Philippines, my only issue is that I have to go through your US sales process rather than just getting it factory direct from here. I get that that's probably due to some contractual arrangements with your sales contract or something.

We are looking and researching cats to purchase and move on as full time live aboard. I love what you do and heard of you through the Wynns. Can the HH44 be ordered with a half raised helm?? The lower helm is a definite deal breaker.

Sounds like Greenline Yachts have been doing it for years with power yachts!!

Can you put this system into a monohull (50-60 feet)?

what is the max speed with 2 * 15kw electric motor

Just use the sails as a solar panel🎉🎉🎉

I believe that simple electric motors, a larger battery (Ford F150 Lightning has a 98KWh battery as standard and 131KWh for the long range version which they are able to fit within four wheels, so surely this size could fit on a catamaran) and a genset is the way to go. The genset would provide emergency back up charging when solar and sailing regen hasn't been enough. If the yacht is designed from the ground up to be electric, the battery would be in the bottom of the hulls and act as ballast and/or be structural.

Le nouveau Outremer 52 peut etre livré avec une barre franche à babord et une barre à roue à 6 positions sur tribord A mon avis c'est une très bonne option pour supprimer le poids et l'encombrement de la deuxième roue et de son support

What's the price tag on them

The real key is more efficient solar panels. Not quite there yet, but they're getting better.

Why we try use the sail as a solar panel

Lightning strikes, will that be the kill shot to electric boats, or is it avoidable?

Everything you two have said is spot on... But let's face it... sailing is a pain. Instead of putting money into lines, sails, a mast and rigging, then take exactly what you have and extend the area for solar and put some more batteries on board. Embrace the parallel hybrid drive for propulsion. All of that extra solar helping out will increase the milage on the diesels to something tolerable. Not only will this new boat be less of a pain to use to get from point A to point B, but maintenance will be less. A person could be having fun and taking it easy instead of constantly trimming sails, switching sails, replacing chafed lines, greasing winches, fixing blocks and pulleys and all of the other pains that come with sailing. Build it and they will come. This is the boat that most sailors don't know that they need yet.

Why not go with a generator to top the batteries up rather than using diesels?

Interesting stuff. 2:11 , 7:54 - kWh battery. Sounds like crunching gears to a pedant. Polite young fella let it pass.

Lithium batteries that like to start fires with saltwater are scary if you're going offshore. Basically turning a beautiful sailboat into the same insurance risk as a turbine boat. I love the idea but as a Floridian watching multiple EVs go up in flames after hurricane ian flooded them is a good example. Your Ecodrive seems to be a great idea if we could grab some batteries that aren't playing russian roulette with boat ending battery fires. I love this boat been following since your first release video. Definitely a dream build.

Electric vehicles are not competitive and have tons of drawbacks and disadvantages. A hybrid boat is probably the best of both worlds.

The killer argument: redundancy....BUT going parallel hybrid you double everything including maintenance and the weight which approach is not compatible with performance. It seems to me like the phylosophy behind the parallel hybrid design is that you do not want to use your diesel engine anymore but you do not trust electric motor. In the end, the primary source of propulsion is not a true primary electric motor and the diesel engine will serve as a genset, but it is not a true dedicated efficient genset.The result is an in-betwen solution including diesel engines still, which by the way can not be bluewater friendly. Hopefully some people like the Starlink guy believe in reliability of electric motors...

Solar Electric sailboats and motorcycles are the only electric vehicles that make sense with today's tech.10 kw/888 only equals 11 hp. Did somebody forget about friction, heat, and drive train loss? It's is about 888 watts per hp. Length of water line with 11 hp it isn't doing much over 5 knots. Perhaps add super capacitor bank because lithium batteries do heat up and loose power. Super capacitors can run electric motor direct from solar. And skip the power loss by slow charging lithium batteries. Those lithium batteries only cycle so many times. Super capacitor bank cycles millions of times. The super capacitors will cycle so batteries don't and batteries will have less hard cycles. Can you imagine boat lights dimming out because using electric motor. Like when bass hits on a car amplifier and dims headlights.

Why 2 Diesel engines? Weight, cost, maintainance are reduced with only one ice.

The systems sound awesome with all that ability to recharge the batteries. BUT, you have ignored mother nature and her lightening strikes. Your insurance had better be top notch = expensive.

need to abandon the diesel. how can you say we all know and love this?

I love ur upset of diesel. And hybrid electric. Is there some kit for make in an elmotor and use together whit my older 140hp volvo penta engine ??? Have solar and litium and use boat for 3 4 5 year traveling. Very in to this green hh44 your made for some great People. So wonder if some kid addeble for me ? Like regen and all

😂

5 years for solar panel warranty is very very low. I think removing 1 of the diesel engines, its fuel tank and then adding another 30kw of batteries in that area. running just 1 diesel engine charging at 5kw would allow the other electric engine to run at 7.5 kw for 10 hours if needed. I would also add 2 more 500 watt panels over the dingy area. we are trying to get rid of duel engines and this way only removes the generator which many have done with large output alternators. You usually plan for when you are leaving or running to avoid a storm. so even that one diesel might not get used as much as one thinks it would.

I don't see a boat as being a serious electric boat, even on a sailing vessel until PV's are on just about every square inch of hull above the waterline. Having them just mounted on roofs isn't sufficient. Having all that money tied up in motors, controllers, and battery banks without absolutely maximizing the PV doesn't make sense to me.

if u can generate 10kw from the electric motor from sailing why not put hydrogen tanks and make hydrogen on the boat and then who needs diesel engine that even without solar free clean water will be made and heat for hot water u can keep taking to ur self without answering what ppl really need all that without solar even wonder why that is hummm.

You keep asking "Why hasn't someone already done this?" Apparently you haven't been paying attention. The Antares 44 is a year ahead of you with essentially the same Eco Drive parallel set up. OOPS.

Firstly, thanks for sharing.... Couple of points here.... firstly Hybrid configuration is old before it ever arrived (like with cars). The point about no one doing this before is INCORRECT. There are compromises everywhere and ultimately you have 4 engines.. 2x 10KW/15HP electric engines are pretty much useless... you want to use these when coming out or into mooring or a marina... there is just not enough power in those to be useful esp if there is tide/wind. The point about driving the boat at 7.5 knots for hours on electric misses the point of the performance cat... can we see what she will do in light conditions (you didn't even mention this) ? Good luck to anyone trying to trouble shoot that motor in the middle of the Pacific. Lastly you've just added extra weight on the battery and the back of the boat... really need to question the decision making here... to me the best solution is a) great sailing boat (btw: those daggerboards will create a lot of windage) and b) the way people seem to be going is 2 x 20kw+ electric engines and one diesel generator (hopefully removing that generator as technology evolves and a lighter one than the monstrosity you just mentioned).. Lastly, your point about redundancy made me realise that people advising you have not really sailed offshore... there are so many parts that things constantly go wrong with diesel engines... its constant maintenance...Almost zero on electric motors and you can wire in redundancy. Overall to me this boat is ok looking (except that back which is a mess - love to see the hydro analysis on a seaway on that) but fanciful and feels like its been designed by a few naval architects straight out of uni with more focus on looks and marketing than sailing.

This is safe European style hybrid boat but 44k battery is way too small for cruising. 200-300 kwh battery is enough to take out the diesel. Also 3000w solar is not enough and these will have to be replaced in 5-10 years! At least 10k on normal style solar power with many years of service please! If you remove diesel there is enough space.

As long as the boat does not follow the path of the Ford F-150 Lightning..........the truck that cannot do truck things!

A pile of smoke and mirrors happening here.

You make a great boat, but I’m afraid you guys are focused on the wrong thing. Hybrid is a nice FIRST step, but don’t forget FULLY electric is the REAL goal. Hybrid is NOT THE FUTURE! A boat designed from the ground up to be a hybrid will NEVER work to be fully electric so PLEASE don’t stop there like Toyota did with hybrids. A fully electric boat designed from the ground up would get rid of the huge heavy fuel tanks and replace them with at least 160 kWh of batteries and would have solar on every surface, including the top and sides of the amas and the coach roof would be redesigned to extended ALL the way aft over the davits to maximize every surface for solar. No one really wants a hybrid boat because that means you still have the hassle of diesel fuel and you still have to maintain gas engines. Fully electric has no hoses, no clamps, no filters, no oil, no belts, no gears, no fumes, no noise, no water pump, no fuel stops, no Jerry cans, no fires, and lower insurance. LESS MAINTENANCE means MORE SAILING! Please stop designing your boats to be hybrids like Toyota and start designing them to be electric like Tesla. Before Tesla, everyone said fully electric cars wouldn’t work or wouldn’t be fast enough or go far enough. All of that is not true with cars and it isn’t true with boats either. Sorry to be harsh. I know you guys are trying, but you’re focused on the wrong thing. Stop believing fully electric boats won’t work. You just have to build them as fully electric from the ground up.

Why wouldn’t you design a fully hybrid setup with a 50kw variable speed diesel generator through two 50kw lithium titanate battery banks delivering power to two 22kw electric engines. When you drop the water holding capacity to be replaced by a water maker, and the diesel fuel capacity because you are generating half of it by sun by my calculations you end up with a far lighter and safer setup than this design. Lithium phosphate is a dangerous risk for fire. Lithium titanate isn’t.

In 2022 and they call themselves innovators with a hybrid engine...

Calling BS!!!!! Sunreef makes a pure 100% electric Cats. Please do a comparison to Sunreef or you are full of lies about needing a diesel.

Is it possible to have 4 electric motors for redundancy, eliminating all the diesel motors all together?