Re: [Electric Boats] Re: Government incentives?

 

The disbelief is due to what ? It appears you are identifying the batteries as the limiting item and hence the disbelief? I have no idea of the range (at what speed) the Swedish Nimbus 27 e depletes it's batteries or how long to recharge, but if your info is fact, sounds like they could use higher density batts,  if I could get that Nimbus 27e to 8 hrs top speed & 2 hrs charging , What would that do for job creation in USA ?

 

The Chinese are pursuing this Battery Technology with reckless abandon, it appears many other countries are pursuing electric propulsion technology with much more vigor than the United States which seems ridiculous. What Vendor supplies the highest density, fastest charging Marine Battery ?

-----Original Message-----
From: Eric <ewdysar@yahoo.com>
To: electricboats@yahoogroups.com
Sent: Thu, Feb 3, 2011 3:41 pm
Subject: [Electric Boats] Re: Government incentives?

 

GNHBus,

I think that if you told any boater that you had an electric propulsion system that would perform exactly like any ICE that you would be met with disbelief. Tell me the same and you'll get the same reaction, and I know something about the topic.

Yep, I'm familiar with the Nimbus 27e. A nice boat, but acording to their info, it's batteries will be completely depleted in 52 minutes of cruising and it will take 28 hours to "refuel" (230V charging). Not exactly the same performance as "any other ICE". For some users, that may be OK, for most powerboaters that I know, it would not be acceptable.

While Nimbus doesn't expect to sell any of these boats until 2015, the price has not been set. I would expect that the 27e will be at least 50% more expensive that the ICE version. Their battery pack (I assume lithium) appears to be somewhere between 50 and 100kWh which will add more than $25,000US to their wholesale costs for the batteries alone, no electronics.

Diesel-electric ("hybrid") drives are used in many large/powerful commercial vessels. Unfortunately, these systems don't scale down to pleasure boat sizes very well and the benefits just don't materialize. But I'm not saying that it can't be done, I would love to hear how well a hybrid drive would work on your boat. I know that in my 30' ketch, I don't really have the room or carrying capacity. For my use, the Propulsion Marine drive and 8Kwh LiFePO4 batteries should be enough.

Fair winds,
Eric

--- In electricboats@yahoogroups.com, GNHBus@... wrote:
>
>
> The Tug Boat Industry (for one) is moving towards E-Prop/Hybrid technology, there are scores of successful data on this globally, the US is just simply far behind and it would take a very interesting politician to make that aggressive move, funny thing about politicians, they don't like to lead due to risk.
> If I told any boater that I had an electric propulsion system that would perform exactly like any ICE, what do you think the reaction would be ?
> Have you seen the Nimbus 27e ?
>

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