Re: Newbie - 20+ foot boat for wide/long river in Guyana, South America
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I will be carrying about 8 persons max plus likely one piece luggage each.? The typical load will be 2 to 3 persons. ? The boat does not have to be big, heavy and fast.? I do have a 23 foot run-about for the faster trips if needed and would like to use this as least amount of time possible. ? A lower speed with a longer stabilized tri hull sounds pretty good.? From what I can gather by your post, this will allow for greater fuel efficiency.? This would also allow me to design this as a boathouse as well for sleeping and living quarters if desired. ??If I go this route, given the expected fuel efficiency, does battery still make sense?? Or perhaps a hybrid of electric and gas? ? I currently have eight 6v Rolls batteries for the villa so likely will not require use of the batteries from the boat although it’s a great backup which I hadn’t considered before. ? Thanks ?
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From: [email protected] <[email protected]> On Behalf Of navkram@...
Sent: Monday, May 15, 2023 1:14 PM
To: [email protected]
Subject: Re: [electricboats] Newbie - 20+ foot boat for wide/long river in Guyana, South America? From what you describe, electric is economically viable, but marginal depending on what you value. My reasoning is that your fuel bill is ~$1000/mo and that would support roughly $70k of investment @12%.
How much do you have to carry, and do you have to go over 32 mph for an hour?? 75 hp for an hour would take about a 60kwh battery.??
That is heavy and costly enough to be questionable.
If you consider
-a lower speed
-a lighter more efficient boat -long stabilized mono (tri) operating at a lower multiple of hull speed or a foil assisted cat (lighter, higher speed)
you could dramatically reduce your power needs and cost.?
The kicker is that those big batteries could be very useful to your off-grid villa when not powering the boat.
If this boat must be big, heavy, fast, and conventional deep V, electric may be cost prohibitive.
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