Powerboat Fuel Efficiency

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jacquesmm
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Re: Powerboat Fuel Efficiency

Post by jacquesmm » Mon Aug 26, 2019 10:57 am

Did you look at Bolger plans? he has some very narrow designs.


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fallguy1000
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Re: Powerboat Fuel Efficiency

Post by fallguy1000 » Mon Aug 26, 2019 11:43 am

BB Sig has it right.

You want to build a boat that isn't.

A fishing platform designed for low fuel consumption is a catamaran. But nothing is going to give you great mpg and be nice to fish from.

The problem with your approach is you are failing boats 101. Boats are tradeoffs.

The sor leads the way. Debate within the sor is answered by the sor.

Example.

I want a stable fishing platform for offshore use that is economical and fast. Doesn't exist.

You have to prioritize within the sor.

I want an offshore fishing platform.
I want fuel efficiency.
I want speed.

Only then can you find the right design.
My boat build is here -------->

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Fuzz
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Re: Powerboat Fuel Efficiency

Post by Fuzz » Mon Aug 26, 2019 2:23 pm

Seems to me like a panga would be the closest fit but that is just my guess.

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Re: Powerboat Fuel Efficiency

Post by fallguy1000 » Mon Aug 26, 2019 5:22 pm

Fuzz wrote:
Mon Aug 26, 2019 2:23 pm
Seems to me like a panga would be the closest fit but that is just my guess.
Maybe, but he wanted a cabin.
My boat build is here -------->

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Matt Gent
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Re: Powerboat Fuel Efficiency

Post by Matt Gent » Mon Aug 26, 2019 5:46 pm

I wanted efficient too, more for range than anything else. Cruising uninhabited islands.

What I find is that the efficiency is very weight sensitive. And when you load down for a trip (or ice / gear / friends for fishing) the economy is affected severely.

Its an interesting intellectual exercise for me, I love watching boats like Irens' go through the water (Greta youtube video) but they can only do that unladen and in smooth water. When I load my boat down (1000+lbs of stuff) it rides better and more comfortably. And I lose 0.8-1.0mpg. So I plan for it on the trip, and carry extra fuel. Which is more weight, so the economy suffers. Rinse & repeat.

A friend is infatuated with drawing super long and narrow boats, often as a Tri or Proa. They would be awesome for solo backwater camping and exploring but not much more.

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Re: Powerboat Fuel Efficiency

Post by jacquesmm » Mon Aug 26, 2019 6:09 pm

fallguy1000 wrote:
Mon Aug 26, 2019 5:22 pm
Fuzz wrote:
Mon Aug 26, 2019 2:23 pm
Seems to me like a panga would be the closest fit but that is just my guess.
Maybe, but he wanted a cabin.
I designed a Panga with cabin and that could be close to his requirements:
https://bateau.com/studyplans/PG25C_stu ... prod=PG25C.
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fpjeepy05
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Re: Powerboat Fuel Efficiency

Post by fpjeepy05 » Mon Aug 26, 2019 8:44 pm

fallguy1000 wrote:
Mon Aug 26, 2019 11:43 am

Boats are tradeoffs.
You are right. I want to trade stability and speed for fuel economy in a fishing boat.

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Re: Powerboat Fuel Efficiency

Post by fpjeepy05 » Mon Aug 26, 2019 8:46 pm

Fuzz wrote:
Mon Aug 26, 2019 2:23 pm
Seems to me like a panga would be the closest fit but that is just my guess.
I do love panga's. Even though all pangas are narrow fishing boats, not all narrow fishing boats are pangas. :wink:

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Re: Powerboat Fuel Efficiency

Post by fpjeepy05 » Mon Aug 26, 2019 8:48 pm

jacquesmm wrote:
Mon Aug 26, 2019 10:57 am
Did you look at Bolger plans? he has some very narrow designs.
Wow 1) Phil Bolger has a TON of plans. 2) He has some VERY narrow designs.

Thanks

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BB Sig
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Re: Powerboat Fuel Efficiency

Post by BB Sig » Mon Aug 26, 2019 8:51 pm

An accomplished designer has steered you to a boat that best fits your program. I've learned a lot from this forum. One of the best lessons is that when Jacques gives his "opinion", take it as boat building gospel. :wink:

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