Yamaha outboard prototype debut at Miami Boat Show

Jus Cruisin

Jus Cruisin

Well-Known Member
Oct 6, 2021
2,312
Lake St Clair - MI (Belle Maer Harbor)
Boat Info
2004 390 DA
Engines
8.1's
newatlas.com

Yamaha hydrogen combustion outboard brings more clean H2 to boating

Yamaha Motor has already pushed to the front of the pack in developing hydrogen engines for automobiles and off-highway off-roaders, and now it's looking to launch its hydrogen-combustion program into the water. A potentially critical piece of its greater carbon neutrality program, Yamaha's new…
newatlas.com newatlas.com

I'm not versed in the technology but this seems like a great idea. I know this has also been developed for automotive use and seems like a good alternative to gas engines. Not sure if hydrogen fill up stations would be easy to add to existing gas stations?
 
I don't get it. First, Hydrogen's thermal efficiency is about half that of gasoline and even lower than diesel.
Secondly, it takes approximately three times the energy to produce hydrogen in the liquid form vs. what hydrogen delivers in energy. We use hydrogen for rocket boosters because of it's mass performance (ISP) not necessarily because it is a good fuel. Lastly, hydrogen's flammability is extreme; you need only about 4% hydrogen in air to be a problem. A small leak is a big deal.... And you think a propane bottle in a boat is a concern.
Checking a technology box.
 
Enough said.....

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ttmott said:
I don't get it. First, Hydrogen's thermal efficiency is about half that of gasoline and even lower than diesel.
Secondly, it takes approximately three times the energy to produce hydrogen in the liquid form vs. what hydrogen delivers in energy. We use hydrogen for rocket boosters because of it's mass performance (ISP) not necessarily because it is a good fuel. Lastly, hydrogen's flammability is extreme; you need only about 4% hydrogen in air to be a problem. A small leak is a big deal.... And you think a propane bottle in a boat is a concern.
Checking a technology box.
Click to expand...
More likely checking the woke box.

Hydrogen is a terrible fuel for combustion engines. Add to that ....no distribution and the inevitable Hindenburg disaster waiting at the fuel dock.

This is Yamaha's corporate strategy:

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Seems like their time would be better spent on synthetic fuels and planting trees.
 
Also on the political spectrum, could you imagine if water was a main energy source to power ICE’s? Methinks it would not be good.
 
Well they need to perfect "Cold Fusion" first, then a salt trap and they will have a motor that runs from the sea. But this could be the answer to the melting glacier's and keeping the sea water level in check if mass produced to all fossil fuel engines (o_O). But running an engine with a hydrogen tank in the boat is a very dad idea. Not to mention how the hell do you fill it up.
 
Skybolt said:
Well they need to perfect "Cold Fusion" first, then a salt trap and they will have a motor that runs from the sea. But this could be the answer to the melting glacier's and keeping the sea water level in check if mass produced to all fossil fuel engines (o_O). But running an engine with a hydrogen tank is the boat is a very dad idea. Not to mention hoe the hell do you fil it up.
Click to expand...


Not a problem......this guy has it all worked out....

1702389770850.png
 
Agree with TT. I would not want that in my boat. It's like carrying a bomb
 
Don't know. I have a gas boat and that will not change in my life time
 
Pirate Lady said:
Suzuki outboards have gone with figuring out how to run super lean, getting amazing mileage and near zero emissions. I love mine.
View attachment 155428
Click to expand...
Thats a great little combination Pirate Lady, but just think, if you switched the motor over to Hydrogen, you could fill the tubes full of Hydrogen and you would have unbelievable range. I think France may be possible if you caught the Gulf Stream! :)
 
ttmott said:
I don't get it. First, Hydrogen's thermal efficiency is about half that of gasoline and even lower than diesel.
Secondly, it takes approximately three times the energy to produce hydrogen in the liquid form vs. what hydrogen delivers in energy. We use hydrogen for rocket boosters because of it's mass performance (ISP) not necessarily because it is a good fuel. Lastly, hydrogen's flammability is extreme; you need only about 4% hydrogen in air to be a problem. A small leak is a big deal.... And you think a propane bottle in a boat is a concern.
Checking a technology box.
Click to expand...
Reference The Hindenburg.
 
dtfeld said:
Reference The Hindenburg.
Click to expand...
It doesn't take much energy to ignite hydrogen. Electrical installations as far as the NFPA goes are the most costly for around hydrogen systems (Class 1 Div 2 Group B). I could only imagine how the ABYC would address the use. A hot turbocharger or slipping belt, raw water pumps, bilge pumps, even static electricity would be a problem. It just doesn't seem realistic to have hydrogen storage and transfer systems on a boat.

The Hindenburg had a leak in one of the gaseous hydrogen bladders and mixed with air. A static electrical discharge set it off. It was a self-eating watermelon.
 
ttmott said:
It doesn't take much energy to ignite hydrogen. Electrical installations as far as the NFPA goes are the most costly for around hydrogen systems (Class 1 Div 2 Group B). I could only imagine how the ABYC would address the use. A hot turbocharger or slipping belt, raw water pumps, bilge pumps, even static electricity would be a problem. It just doesn't seem realistic to have hydrogen storage and transfer systems on a boat.

The Hindenburg had a leak in one of the gaseous hydrogen bladders and mixed with air. A static electrical discharge set it off. It was a self-eating watermelon.
Click to expand...
Or an airplane, but it's been proposed.

You first!
 
ttmott said:
It doesn't take much energy to ignite hydrogen. Electrical installations as far as the NFPA goes are the most costly for around hydrogen systems (Class 1 Div 2 Group B). I could only imagine how the ABYC would address the use. A hot turbocharger or slipping belt, raw water pumps, bilge pumps, even static electricity would be a problem. It just doesn't seem realistic to have hydrogen storage and transfer systems on a boat.

The Hindenburg had a leak in one of the gaseous hydrogen bladders and mixed with air. A static electrical discharge set it off. It was a self-eating watermelon.
Click to expand...
Lastly, burning hydrogen is invisible. You could walk right into a hydrogen fire and not know it until crispy critered.
 
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