Can Electric Marine Propulsion Be A Reality (in pleasure craft)?

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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Jul 23, 2011
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Re: Can Electric Marine Propulsion Be A Reality (in pleasure craft)?

being an engineer with a background in diesel and natural gas gensets, mobile equipment, hybrid mobile equipment, electrical outdoor power equipment and the marine heat exchangers, I am finding this post humorous.

is it plausible to make a battery powered electric propulsion boat - yes. is it practical - no.

even based on engineering a 30hp install on a sailboat in lieu of a perkins 104, the cost equated to about 25 years of diesel based on actual use.
 

wca_tim

Lieutenant Commander
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May 28, 2007
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1,708
Re: Can Electric Marine Propulsion Be A Reality (in pleasure craft)?

the only truly plausible motivation I can see for going with electric primary propulsion on a pleasure craft... is silence (ie diesel electric submarines), but the problem of efficiency is always going to kick your ***. as is safety to some extent... high amperage dc motor? hydrogen gas? hmmm... no thanks.
 

rfdfirecaptain

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Aug 17, 2008
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Re: Can Electric Marine Propulsion Be A Reality (in pleasure craft)?

"That would be a pretty good conversion!! 1000KW is about 1360 HP."

Yup, that was a typo... should have been 1000 WATTS not Kilo-watts.
 

rfdfirecaptain

Petty Officer 1st Class
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Aug 17, 2008
Messages
314
Re: Can Electric Marine Propulsion Be A Reality (in pleasure craft)?

being an engineer with a background in diesel and natural gas gensets, mobile equipment, hybrid mobile equipment, electrical outdoor power equipment and the marine heat exchangers, I am finding this post humorous.

is it plausible to make a battery powered electric propulsion boat - yes. is it practical - no.

even based on engineering a 30hp install on a sailboat in lieu of a perkins 104, the cost equated to about 25 years of diesel based on actual use.

The only thing see that is ?humorous? is the fact that we?re all just one more big gas hike away from parking our boats, or selling for whatever we can get for them. Yet there?s not one among us (or even a few collectively) who has the knowledge, and conviction to do something about it. I complain because I don?t know how to do anything about this problem and there are others who have the knowledge but will do nothing because they see no demand for a new technology. QC made that point and I suppose he?s right. But, I believe there is coming a day when we?ll be sorry that this industry waited so long to get started working to solve this problem.

Everyone doesn't have your professional training/knowledge, but we all suffer from the high price of fuel. Some more than others, depending on their personal wealth. I think you missed the point of this thread. I never intended to solve the mystery here in a blog or to somehow come up with a formula to overcome what we already know to be basic principles of design. Even if this is not a viable option it has gotten people talking. That?s the first step if anything is ever going to change (improve).

A lot of good information has been presented. I and other non-engineer types have heard from the professional experts. Whether one chooses to accept their information is a personal choice. Let?s say you all are right and this idea never comes to fruition. That doesn?t equal defeat and it doesn?t mean a lot of good ideas won?t come from researching this idea?s viability. It?s just means more time doing brainstorming, research, testing and excluding non-productive ideas to find the breakthrough. Remember, Thomas Edison said he was not a failure because he knew of 10,000 ways a light bulb won?t work.
 

cyclops2

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Apr 19, 2011
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Re: Can Electric Marine Propulsion Be A Reality (in pleasure craft)?

The wind is cheaper every year.

Electric cars are not ready yet. That is why our tax dollars are subsidizing anything GREEN. None of it is cost effective.
 
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