Motorization of a boat with electricity

[the middle]

But I have an idea that especially for the generator there must be ways to find it cheaper.

Yes On Ebay.com

[I Citro]

Welcome Waterproof

The solution that I retain:

4kW diesel generator set
4kW electric motor also
95W mono crystalline (or mono hybrid) solar panel
4 battery 120A / h (1h of autonomy)

Greenhouse budget: € 4500 maximum, i.e.
1000 euros for the panel
1500 for the generator
1000 for batteries
500 € for the engine
500 for everything else (regulator, load limiter, etc ...

Your budget seems to hold up.
You should be able to easily find a new petrol group for less than € 1000, perhaps even diesel ...

For the panel, you are quite wide but try to find material suitable for marine use (this exists).
For batteries, it seems a bit fair (I would have it € 1200).

For the engine, I have no idea of ​​the budget ...

[Chatham]

Your budget seems to hold up.
You should be able to easily find a new petrol group for less than € 1000, perhaps even diesel ...

No, this budjet absolutely does not hold water, it would not even be enough for a new 10hp diesel (4800 to 6000 €) ... and 10hp is already very underpowered for a 9m sailboat ... (4kw it is very optimistic, that's not how you will go up a current or a light breeze ...)
On a light sailboat, the electric diesel system makes no sense, too heavy, too bulky, and very expensive ... on a heavy displacement sailboat with a large efficient propeller, which can carry 1 ton of batteries and a large group why not...
And hope to sail with energy drawn from a solar panel: good luck ... the only examples that work use a hydrogenerator ... but it pays for a loss of speed under sail ...

[I Citro]

My answer corresponded to the advertised material ...

I don't know anything about boats and I didn't know which boat Waterproof wish to equip. He only talks about harbor maneuvers and short navigation ...

So this is what the boat looks like. Waterproof

and here is its technical sheet:
Touch of madness
9 (m)
Type: Habitable monohull
Genre: Cruise
Length (m): 9
Floatation (m): 6,75
Width (m): 3
Draft (m): 1,65
Wing (m2): 44
Displacement (kg): 2
Berths: 6
Material: Monolithic polyester
Project: Jeanneau (France)
Launching year: 1978
End of construction: 1979
Architect: Philippe Harlé (F.)
Price incl.VAT: 16 €
Security and regulation
Customs tonnage (tx): 7,5
TRANSPARENT PHONE CASE WITH DETACHABLE WOODEN BEADS STRAP
Type of appendage: Keel keel
Ballast weight (Kg): 1
Figure
Ballast percentage: 31584
Weight / upwind wing: 64,09
Upwind sail / width: 14,67


I saw that this type of sailboat was commonly motorized by diesels from 10 to 21hp (8 to 15kw)

So thank you for your lights Chatham

[the middle]

He only talks about harbor maneuvers and short navigation ...

Don't worry Citro, I will have answered the same as you.
But, it is true, in navigation, it is always dangerous to "tinker".
It only takes once, and goodbye friends.

[I Citro]

Don't worry Citro, I will have answered the same as you.

I see that you are a fine psychologist.

But, it is true, in navigation, it is always dangerous to "tinker".
It only takes once, and goodbye friends.

You do well to call him back.

[yanyan26]

Hello,

I just saw a report this evening at 20 h 00 on the 2 on an electric boat powered by solar panels in the creeks
at the end of the newspaper



http://jt.france2.fr/20h/


A+

[I Citro]

Thanks for the info on the solar boat SOLIS

[Waterproof]

Hello,

I come back to you, the project remained a project .... but I do not despair.

As chatam says, 4kw seem short, I am finally moving towards 8kW, but I wonder if I do not overestimate, these boats are originally equipped with 12 hp diesel engine.

I found a generator 8kW at 1500 euros, and I plan not to install a large fleet of batteries. port maneuvers is around 30 minutes maximum / day (large maximum actually) at low power, consumption of 2/3 kW in general, a single 200Ah battery is enough for me. The generator is only used when extended engine use is required.

does that make sense, for the stalled?