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(Late 2015) - any developments on the electric BOAT front?

Discussion in 'Electric Vehicles' started by AudubonB, Sep 9, 2015.

  1. AudubonB

    AudubonB Mild-mannered Moderator Lord Vetinari*

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    There had been some chatter here in the past, but nothing I can find recently.

    I have a Boston Whaler that, terribly, I never use; I also have a goodly supply of PV batteries from an earlier project (Pb-acid....heavy...but on hand). I'd be quite keen to learn more about any close-to-feasible conversion that currently exists. Surely there must be some kind of prop-driving electric motor out there?

    I also happen to have a number of minuscule electric trolling motors (Minn-Kota), but even if all 3 or 4 of them were in good order they'd not be able to push the Whaler very far for very long or very fast.

    Any help, anyone?
     
  2. ojee99

    ojee99 Onno

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    Torqeedo it is!
     
  3. rabar10

    rabar10 FFE until Model 3

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    Torqueedo has been at past TMC Connect events, their top-end models are 40HP and 80HP outboards:
    Deep Blue - Torqeedo
     
  4. Heart of Gold

    Heart of Gold Member

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    A prototype fishing boat was made in Norway.

    Google translate link to one of the articles https://translate.google.no/translate?sl=no&tl=en&js=y&prev=_t&hl=no&ie=UTF-8&u=http%3A%2F%2Fwww.tu.no%2Findustri%2F2015%2F07%2F31%2Fdette-er-norges-forste-fiskebat-med-elmotor&edit-text=
     
  5. AudubonB

    AudubonB Mild-mannered Moderator Lord Vetinari*

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    Thanks for the links - not surprisingly, none is applicable for retrofitting. What I'd really like to find is a standalone electric outboard that I could pop onto the Whaler. Just for giggles, I may gang up all my Minn-Kotas on its transom to see how fast and far they can push it. Not much, I'm sure.
     
  6. mspohr

    mspohr Active Member

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    I'd love to see the demo of the Minnkotas. I had considered trying that myself last year. I think it could give reasonable if not spectacular performance.
     
  7. rabar10

    rabar10 FFE until Model 3

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    #8 rabar10, Sep 14, 2015
    Last edited by a moderator: Mar 13, 2016
    You're probably looking at something a little more off-the-shelf than this retrofit?

     
  8. Bangor Bob

    Bangor Bob Member

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    Electric Boat Company, Groton, CT? 1st, you need some uranium..
     
  9. AudubonB

    AudubonB Mild-mannered Moderator Lord Vetinari*

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    Heh, heh. Yes, every time I see/hear the two words "Electric" and "Boat" together, I think of that town which featured very prominently in one side of my family for many generations, and its most famous product.
     
  10. RDoc

    RDoc S85D

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    In the 19th century before gasoline and diesel engines in boats, they were powered by steam (and a few by electricity), including small launches and open pleasure boats. Unlike today's boats they were very narrow for their length and quite slow by today's standards, similar to sailboat speeds.

    However, a lot of these ran with 2-5 hp engines. 1 hp = 745 W, so a SWAG might be a 2 hp motor driving a very narrow hull, say 4' beam and 18' waterline length, making 5 mph, which would be 1500 W or 1.5 kWh per 5 miles, about 300 Wh/mile, the same as our cars at 70 mph. Say the battery was a 10 kWh Powerwall, that would drive the boat for about 6 hours and 30 miles.

    I suspect that to really make this work, it would be best to design a catamaran with two very narrow hulls, say 18" wide and 18' long, the spacing between them doesn't matter within reason. The ratio of length to width is really critical in this kind of boat design. A total guess says that might get the boat up to 8-10 mph for the same power.
     
  11. brucet999

    brucet999 Active Member

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    Check out their CPO pig boats, maybe? :)
     
  12. S'toon

    S'toon Knows where his towel is

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    #14 S'toon, Sep 22, 2015
    Last edited: Sep 22, 2015
    The motors of diesel-electric submarines are electric motors. This is what makes them so extremely quiet. The diesel engines are used only on the surface to recharge the batteries.

    The newer developments are such refinements as air independent engines so there's no need to resurface.

    As for recent developments on the commercial front:
    http://cleantechnica.com/category/clean-transport-2/boats/
     
  13. GSP

    GSP Member

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    Torqeedo offers electric outboards in several sizes. Here is one of them:

    Cruise - Torqeedo

    GSP
     
  14. gregincal

    gregincal Active Member

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  15. SabrToothSqrl

    SabrToothSqrl Active Member

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    I'd love to toss a 200 HP motor in a jet ski, just to take it to an 'electric only' lake. and really mess w/the people.
     
  16. JohnQ

    JohnQ Active Member

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    The 22' Pearsons at my club have electric outboards that work well most of the time. But when the wind and waves kick up they can be painfully slow. Definitely emergency engines for when the wind dies and maneuvering at dockside. Perfect use case.
     
  17. smasterson2

    smasterson2 Member

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    Love it! This is my conversion of a 2016 175 Bayliner:
     
  18. smasterson2

    smasterson2 Member

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