Thats a great Idea..they will be in good hands for sure

those solar panels are actually really cheap, so to justify a higher price they give you a lifer warranty, which you will need because they won't last that long.

More clean, less energy, "green" energy, less noise, lower maintenance, almost (generator on board) or in fact fully self-sufficient with solar panels and less cost. That was a great video, i hope we can see more of such boats..

why not combining both? Sailing with a electric "harbour-engine" would be a good solution, I think.

2 motors so if one goes you have a second. The batteries are in 3 sets so I assume they're got their own systems (2 of them are for propulsion 1 for house load) I'm personally curious how it fairs with a lightning strike but they've said they can take a strike and still function. Most configs only have 1 generator but that's a backup system anyways. 2 water makers on most models, they have a surprising level of redundancy (granted there are a bunch of cats with fully redundant systems) I'm not sure what the achilles heel would be... speed? It's not the quickest even with the kite sail, even if the motors are running with generator assistance. Price? Yeah, they're very expensive, some would say overpriced. But I think maintenance and fuel savings will offset that a bit in the long run. Honestly, think of it as a sailless catamaran sailboat as opposed to a powerboat. With new solar and battery technologies on the cusp of release the concept is only going to get more common and the boats are only going to get better (although I think solar propulsion is going to be restricted to cat and tri-hull designs for the near future)

@@KMCA779 Thanks, that echo's my thoughts. It has two dual motors. I wonder what happens if you lose just one of the motors that are paired? It sounds like motors never die but what about the master/slave controller? In a solar system for a house I hear that the inverter is the first thing to die. Those controllers are basically inverters so I'd imagine them suffering in the same way. There's a lot to learn about these things. Not only how they function, but how they malfunction on the seemingly rare occasion.

Cats can and do use a single engine with a slight rudder adjustment to offset torque all the time for efficiency. Electric motors have minimal points of failure compared to marine Diesel engines increasing safety further.

@@carsonc1272 I'm sure they have multiple inverters and charge controllers with milti stage switching for isolating or sharing loads and pv panel groups. I wouldn't be surprised if they had more than 2 inverters and more than 2 charge controllers. I would assume they have a separate grounding system with lightning rod to attract any strikes and the pv systems would all be protected by fusing also.

There are multiple redundancies in the Solar array, each string of panels has its own charge controller, and it's not as simple as "front" or "flybridge" ... otherwise shading just one cell in a panel would bring the entire array down. Google around and get some info on how solar systems actually work, having 13KW of solar panels doesn't mean you'll get anywhere near that, you might average 60%. There is also the generator, which on later boats is much more robust. Another thing to keep in mind is that you never want to run the batteries all the way down to 0 or run them all the way up to 100% ... for the life of the batteries it is best to have them running somewhere between 20-80%. I have also seen a trend with using Kite Sails ... For two electric motors to fail at the same time would be HIGHLY unusual ... you have a much bigger problem ... go find it, and get on your radio!

just look at the Silent 60

Remember the boat is 6 years old, most like 8 years counting build time. So 77kW was a lot 8 years ago. New electric 60foot sailing cats are coming with 250kW packs. The tech is only getting better 😎

@@AdventuresonTour the same would have been possible 6 years ago, tech has not gotten substantially better they just realized they need more battery capacity so they did just that.

@@Pixelplanet5 actually the tech had changed greatly in the last 6-8 years. Power density is up nearly 25% in modern cells than it was back than. Plus the addition of built in BMS systems. Along with availability of battery options.

@@AdventuresonTour they are using LiFePO4 batteries, they have certainly not improved by 25% and they are extremely simple in terms of their BMS needs. The main thing holding solar boats back is still that you need insane surface areas to gain enough energy to move a boat and that has not changed at all in the meantime. The only thing that has somewhat improved for cars is the packing density of the cells which increases energy density on pack level but thats not relevant for a boat because space and weight are never any concern on a boat large enough to produce enough solar energy to move that boat. just look at the model S, the 2012 version and the 2022 version still use basically the same cells with the major difference being in 2012 they had 3000mAh of capacity and now they max out at 3500mAh which is only a ~17% increase in 10 years and these are the best cells we have right now, LiFePO4 cells are far below that but are also much cheaper.

@@Pixelplanet5 I've spend the last 25years working and maintaining battery backup systems and battery power heavy duty transportation equipment. I've seen first hand in the feild over the last few years and the improvements are most definitely there... so we'll just agree to disagree, enjoy your day..

Mimicking Nick of Aquaholics another vlog you might be interested in to avoid getting tipsy.

I can think of a few reasons, but the biggest one was that the whole point is saving the cost of pumping the hot water in a continuous loop. The main reason solar water works is because you can put it high enough up to use its own weight/gravity to feed the hot water. Here you would need those same cyclic pumps. Next is complexity - plus you still need to be able to heat water when the weather is less friendly, and at night. So you would have to build in backup heat that would be less efficient than what they are using now. (its hard to beat "point of use" on -demand for efficiency unless you use a LOT of hot water) Oddly enough, they don't have THAT big of an energy problem on the boat. The biggest reason is that they care about "at-anchor" efficiency is they want to never run the generator -- so the biggest "static" demands are addressed and mitigated. The times they are both under way and running a lot of hot water at the same time are fairly minimal.

It's possible. But mostly lots of different systems are delivered from different suppliers. You need DEEP integration for this, Tesla does this as the only car builder in the world with their super advanced HVAC reusing every bit of heat in the car. :) That's why a Tesla is so efficient in winter.

Silent Yacht is a new company. Plus people are REALLY interested in the boats. Of course they're going to do what they can to leverage the interest into sales.

No, you can run all systems simultaneously

What you're asking here is "how much fuel with a completely different design consume", there are far too many variables to answer that question ... go look at Greenline Yachts.

Sailing cats are a great use case and in wide production, one of my personal favorites is what Windelo is doing (link below). One of the largest benefits of a sail boat coupled with electric motors is you can turn your prop into hydropower when under sail to offset the amount of solar required. ukposts.info/have/v-deo/g3Z1mYGQq2aEsWg.html

The problem is that traditional sails would shade the solar panels. There is an option on the newer models to have a kite sail, the documentation on it isn't the best though. People keep asking but I haven't seen much information on it.

Technology has not come a long way in 6 years. Energy density on our best batteries has increased by like 10% at most and thats about it. Solar panels havent changed at all in that time except that they got bígger so they can advertise higher wattage and hope people wont realize. The newer silent yachts use LiFePO4 batteries because they are much cheaper and weight is not a concern anyways so cycle life and degradation is not of any concern. The boat we see in this video can be considered a prototype which will have its own problems because of some weird choices.

Changing the batteries on a boat like this might be easier comparing to a Tesla.

@@Pixelplanet5 My concern is that everytime Silent Yachts roll out any kind of ship promotion, its either THIS EXACT ancient yacht because "It crossed the atlantic" or the Silent 60 basemodel. I dont think Ive ever seen anyone do an IRL test of the viability of a Silent 80 EVER. Suspect....

@@TheStaniG thats because zero Silent 80 have been build so far. They could cross the atlantic even without using any fuel, it just takes longer to do so.

@@Pixelplanet5 I think the first one should be hitting the slipway any day now. I can't wait to see a tour of it.

I had exactly the same question, but I think the low rpm a propeller needs could also be a reason for the power output. I wonder what the max torque of this motor is.

the motor itself isn't that big - its just encased in that big water jacket for cooling. They made it so that motor can run continuously, where Teslas are limited to a few hours at a time.

Just remember this boat is from 2016 quite a lot has changed with Silent Yachts since then,

Silent Yacht 64

Would negate any advantage of the large array of solar panels(kite system maybe)

@@storm4710 I love my girlfriend doesn't negate the fact that she is fat and ugly. Just saying. All the best, Paul

@@paulinboston I was talking about your idea of putting a sail on it, but hey you do you

The ship has a backup generator. Hell the new one rolling off the line soon will be able to have 2 if you want to fork out the money.

Add a kite sail and it would be great! Half the energy consumption + 4-5 knots of speed

this is a 6 year old boat, things have moved on with bigger storage, better panels and bigger motors. the electric yachts really do work well now.

😂😂, I think you need to learn a thing or 2 about motor yachts and their fuel consumption.

@@SuperYachtCaptain I don't deny, i have no experience in boats, i just do the math and to me that's extremly expansive. I know people that bought boats for 5k dollars and they crossed Atlantic with sails. To pay for green boat that much to cross Atlantic it's beyond my comprehension.

Uhm this boat has Solar and a generator(Like all Silent Yachts, also this boat is from 2016) Wind power creates noise(Watch The O'Kelly's video on it for more info) How would you do HEP on a moving vessel without increasing drag(more drag means more energy usage to keep the same speed

The batteries might be guaranteed for 8 years, it doesn’t mean you’ll be replacing them once 8 years are up. The traction battery in my Toyota Prius was also guaranteed for 8 years. The vehicle is now 14 years old and the battery is still running and charging to about 95% of original SoC - a good BMS is key to the batteries having a long life.

Could you please like to others with video's of the Silent/Solarwave 64? Because from what i tell videos of this boat is quite rare, I found one walkthrough.