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Old 11-05-2020, 06:14   #1
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Silent Yachts Solar Wave 64

Anyone on here have experience with the Silent Yacts? We are looking to buy a cat for a around the world trip starting next year. I am a very big supporter of renewable energy and thought these boats were very interesting. Was just wondering if anyone had experience or new anyone who had experience with them. Was wondering how well they hold up and how much maintenance they require. Thank you.
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Old 11-05-2020, 17:45   #2
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Re: Silent Yachts Solar Wave 64

No, but I'm interested too. I haven't found blogs or videos from any owners of the 55 or up, or independent people who have spent some time aboard. It's all vewi vewi quiet...
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Old 11-05-2020, 23:31   #3
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Re: Silent Yachts Solar Wave 64

ISTM that they are great for what they are designed for but "around the world" ain't it.


Blue water seaworthiness and realistic cruising speed/range are the two big problems.
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Old 12-05-2020, 00:23   #4
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Re: Silent Yachts Solar Wave 64

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ISTM that they are great for what they are designed for but "around the world" ain't it.

Blue water seaworthiness and realistic cruising speed/range are the two big problems.
Yes, I'm keen to hear some real-world results.

But a large number of sailboats traverse the seas - often at angles to their final destination - at a SOG of 5-6 knots. I seem to remember from a YT video that this is a "forever" speed on solar alone for at least one of the Silentwave. So IF their figures are correct , then your second point isn't really fair, unless you're comparing to the Volvo's or huge tri's sprinting at 30kn. Ignoring the cruising mantra that "gentleman don't go upwind", for some destinations 5-6kn SOG straight at it will get you there far faster and easier than 5-6kn SOG on tacks and being blown around...
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Old 12-05-2020, 00:48   #5
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"Solar Ingenuity"

but with a min 22kW (up to 100kW) genset
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Old 12-05-2020, 01:18   #6
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Re: Silent Yachts Solar Wave 64

Based on their own figures:
https://www.mby.com/gear/solarwave-6...eality-84300/2
Initial sea trials (as yet unverified by our own testers) show that at 6 knots, the two 60kW electric engines consume just 12kW.

I make that 12 x 24 = 288kWh per day on a passage. (Of course no mention of sea conditions. I suspect that is NOT in the open ocean.)

https://www.silent-yachts.com/faqs/
"the panels produce around 17kWp, which results in around 100kWh per day.

(I'll ignoring the very dubious assumption of 6 hours full sun equivalent per day from horizontal panels - 80kWh would probably be more realistic.)

So even on their own very optimistic figures there's a 188kWh deficit before you even look at house loads.

Sorry but it doesn't make sense.


Hopping around the med or the Caribbean motoring for a few hours a day and lots of "lay days"? Yes.
Passagemaking? No way!
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Old 12-05-2020, 01:38   #7
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Re: Silent Yachts Solar Wave 64

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Originally Posted by SoonerCruisin View Post
Anyone on here have experience with the Silent Yacts? We are looking to buy a cat for a around the world trip starting next year. I am a very big supporter of renewable energy and thought these boats were very interesting. Was just wondering if anyone had experience or new anyone who had experience with them. Was wondering how well they hold up and how much maintenance they require. Thank you.
Whats wrong with wind and sails?
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Old 12-05-2020, 01:48   #8
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Re: Silent Yachts Solar Wave 64

Beware of snake oil salesmen.


FWIW - I thought that the 64 was no longer being produced.
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Old 12-05-2020, 02:08   #9
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Re: Silent Yachts Solar Wave 64

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Originally Posted by Tupaia View Post
Beware of snake oil salesmen.


FWIW - I thought that the 64 was no longer being produced.
From their 64 web page:

"Has been discontinued & substituted by the SILENT 60."
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Old 12-05-2020, 09:00   #10
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Re: Silent Yachts Solar Wave 64

If you go for the hybrid version you get the diesel engine (perhaps that is how they claim trans-ocean), but I didn't see anything on tankage...

Now they do have a Kite Sail Option

Either way I do think they are overselling the solar trans-ocean
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Old 12-05-2020, 09:03   #11
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Re: Silent Yachts Solar Wave 64

Not 100% sure, but I think one 55 crosses the Atlantic not long ago on itís own keels. But Iím guessing with a genset running all day.
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Old 12-05-2020, 09:53   #12
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Re: Silent Yachts Solar Wave 64

What a cool idea? You should consider adding a fly bridge.


I want to be there when the wind hits 60 knots. The windage alone scares me
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Old 12-05-2020, 11:37   #13
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Re: Silent Yachts Solar Wave 64

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Originally Posted by SoonerCruisin View Post
Anyone on here have experience with the Silent Yacts? We are looking to buy a cat for a around the world trip starting next year. I am a very big supporter of renewable energy and thought these boats were very interesting. Was just wondering if anyone had experience or new anyone who had experience with them. Was wondering how well they hold up and how much maintenance they require. Thank you.
Interesting question regarding how they hold up. It seems that for a bit less money you could have a new Knysna 50 with the Ocean Volt electric motors and plenty of solar. The electric motors provide regeneration to the extent that if you're cruising at 6 knots under wind and you use the motors to attain ten knots, it becomes a wash on the battery depletion (meaning you could do 10 knots forever as long as you had 6 knots of wind - that's 240 nm's per day) And there's no question whether the Knysnas could do it as they're proven blue water cruisers. If you have the bucks to do this, there's no reason to be a Guinea Pig.
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Old 12-05-2020, 12:24   #14
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Re: Silent Yachts Solar Wave 64

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Originally Posted by Tupaia View Post
Beware of snake oil salesmen.


FWIW - I thought that the 64 was no longer being produced.
Agreed on the snake oil. Not one mention of the actual equipment makes supplied in these boats despite the glossy website.
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Old 12-05-2020, 13:39   #15
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Re: Silent Yachts Solar Wave 64

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Originally Posted by SoonerCruisin View Post
Anyone on here have experience with the Silent Yacts? We are looking to buy a cat for a around the world trip starting next year. I am a very big supporter of renewable energy and thought these boats were very interesting. Was just wondering if anyone had experience or new anyone who had experience with them. Was wondering how well they hold up and how much maintenance they require. Thank you.
You'll have to wait several years to get an answer about how well they hold up.
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