Bouba
Well-Known Member
So…you have a boat…you have a diesel engine…the only superfluous things are the sails…why do you need them ?
EV technology for your next boat ???
- Thread starter superheat6k
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Chiara’s slave
Well-Known Member
In those days I had a 27ft tri with an 8hp Nissan 2 stroke. The trip ended with a 40kn line squall. And my ears were still ringing from the engine the following morning.
Chiara’s slave
Well-Known Member
We could say that yours us short of a mast and sails. Think of the fuel saving. And not having to refuel or recharge. We still love stink boats though, they’re such a good fit for rafting for us tri sailors. Plus of course, we have a RIB, so it would be a bit hypocritical to bang on.
henryf
Well-Known Member
I also can’t see a future for large electric boats. I can see synthetic / carbon neutral fuels coming on board though. There are several airlines using carbon neutral fuel.
What has happened as eluded to earlier in the thread is usage habits are changing. We can’t survive purely displacement - charter guests need to get to specific places on time, but when re-positioning in between charters we most definitely use tides and very little fuel as can be seen from the fuel computer screen.
Contrast this to over 250 litres per hour when fast planing with a full compliment of 12 guests and 3 crew.
Statistics are ripe for abuse and manipulation. Campaigners use these misleading numbers to further their causes.
In our case we can, with optimum conditions, move 12 guests in spacious, stabilised comfort over 30 miles for around 3 litres of fuel per passenger.
We can also use around 35 litres of fuel per passenger.
Electric power can compete with the first scenario but that’s not going to help. We’re already environmentally friendly.
What has happened as eluded to earlier in the thread is usage habits are changing. We can’t survive purely displacement - charter guests need to get to specific places on time, but when re-positioning in between charters we most definitely use tides and very little fuel as can be seen from the fuel computer screen.
Contrast this to over 250 litres per hour when fast planing with a full compliment of 12 guests and 3 crew.
Statistics are ripe for abuse and manipulation. Campaigners use these misleading numbers to further their causes.
In our case we can, with optimum conditions, move 12 guests in spacious, stabilised comfort over 30 miles for around 3 litres of fuel per passenger.
We can also use around 35 litres of fuel per passenger.
Electric power can compete with the first scenario but that’s not going to help. We’re already environmentally friendly.
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colhel
Well-Known Member
Impressive figures Henry. Still surprises me on our little boat the difference in sense of speed between 5 knots and 8 knots.
henryf
Well-Known Member
I tend to either run tick over on good spring tides or 25 - 30 ltrs / hr to give about 8 knots plus tide. As a former man of wind you will also keep an eye on nature’s bounty when out on the water. In fairness the Solent is really easy Based on Portsmouth tides.
8 knots plus 2 or 3 knots of tide is a decent speed.
John100156
Well-Known Member
On a long trip how on Earth would you recharge a huge battery bank? I can be in and out of a fuel berth in about 30mins how could you recharge batteries in that time
fuel berths can get crowded enough in summer without lots of E boats on them.
How do you put battery fires out? Place the bank in a separate ventilated enclosure at bottom of boat with a quick release lever, drop the hook, pull the ejection lever and wait for boiled or fried fish to rise to the surface. Better than a BBQ whilst you wait for a new bank to arrive. KIDS - DON’T TOUCH THAT LEVER ..
fuel berths can get crowded enough in summer without lots of E boats on them.How do you put battery fires out? Place the bank in a separate ventilated enclosure at bottom of boat with a quick release lever, drop the hook, pull the ejection lever and wait for boiled or fried fish to rise to the surface. Better than a BBQ whilst you wait for a new bank to arrive. KIDS - DON’T TOUCH THAT LEVER ..
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colhel
Well-Known Member
It was more of an observation of how much extra power is needed to push from 5 knots to 8, judging by the wake anyway. But yes,being a former man of wind, I try and go with the tide
John100156
Well-Known Member
Whoops sorry mate I didn’t see the Alpha flag
henryf
Well-Known Member
Yes. Tickover will always be the most efficient, betond that you’re going downhill. You cn feel when the hull is pushing a wall of water. With the F55 I find it more numb in terms of hull feedback so you have to use fuel burn as your sensor.It was more of an observation of how much extra power is needed to push from 5 knots to 8, judging by the wake anyway. But yes,being a former man of wind, I try and go with the tide
Given the numbers involved I’m not to £5 or £10 an hour so settle at Circa 30 ltrs an hour. You do see some boats pushing an uncomfortable bow wake though, it just looks inefficient. There was a Trader? which looked like it was moving a wall of water, may just have been the hull design?
Anyway I don’t want to Hijack the thread but in terms of saving the planet through electricity when it comes to boats slow displacement doesn‘t use much diesel and electricity can’t do high speed over distance. Its like hybrid SUV’s a total waste of time given their electrical range of very few miles offset against heavy and expensive electrical hardware.
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Chiara’s slave
Well-Known Member
New bigger boats will become hard to sell, that’l“ be the supposedly planet saving result. People driving slower, we notice that already. Our sailing races are less disrupted with wake. Basically I think the future with new boats is small, ultra light expensive electric hydrofoils, and bigger boats with more efficient displacement hulls.
henryf
Well-Known Member
Not sure I agree with you there. People still want to travel with friends and enjoy a decent quality of life on board when they arrive. You can’t do that in a lightweight hydrofoil boat.
What people will want is stability when cruising at displacement speeds so stabilisation will be a must have.
Pure displacement is OK to a point but I think people still want the ability to go at planing speeds when the need arises. I’m waiting for charter guests who have just told me they’re going to be an hour late. Lunch is booked but no worries, I just run for a little longer at planing speed to catch up.
Similarly if we want to stay ahead of a weather front we can. People caught out in pure displacement boats often end up putting them on the market when family members refuse to go out again.
Chiara’s slave
Well-Known Member
The solution to larger boats is probably catamaran hulls.
Bouba
Well-Known Member
The solution to parking boats is monohulls
Cats are taking up all our parking spaces in the Med
Chiara’s slave
Well-Known Member
Motor cats don’t need to be wide beam. Raggies do that for stability under sail. Our tri gets around it by folding to mono dimensions, maybe thats a design possibility.The solution to parking boats is monohulls
Cats are taking up all our parking spaces in the Med
PowerYachtBlog
Well-Known Member
Which is nothing new, as this had this technology presented in 2008.
New Model: Mochi 23 Long Range
By the way the inventor of the hybrid in this is Frabetti who was Ferretti Group Head of Engineering Department from the early nineties till about 2012.
He also had a cooperation with MTU to make off the shelf hybrid units in between 2015 to 18, after which he joined Sunseeker first as head of design, the COO and since 2020 is the CEO.
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Portofino
Well-Known Member
They will exploit the smugness feeling as Tesla did and still do .Produce a E Boat .Likely usage smaller trips .But if a lot of old fashioned diesel punters like Henry’s Priny have downsized there range ( D speed + tides + WE charters staying within 50 miles of home port ) anyhow then the switch to full EBoat will be seamless .50-75 ft full comfort as now .
EXCEPT one tiny thing …….this
But they won’t admit it in the marina club bar .They will take all the future maritime equivalent of “ULEZ “or what ever green credentials to anchor in green bays etc .
Just Human nature you watch .The clue will be speccing oversized genys
rafiki_
Well-Known Member
They might be available soon for urban, short range use, but a long way off for any significant distance, and at considerably more cost than a conventional diesel. Hydrogen will start to emerge once the cost of making and storing H2 comes down. Synth fuels are emerging, but some years away yet.
Bouba
Well-Known Member
Exotic liquid fuels might come in the future…but I wouldn’t expect a rapid uptake in marinas..and what if some marinas just did a switch to exotic fuels from diesel…it might prove too much for many marinas to keep a large variety of fuels available..especially if some require special handling
Electricity they already have
westernman
Well-Known Member
I used to run my Citroen CX on 100% bio-diesel made from rapeseed back in 1995 or so in Munich. 0% fossil fuel content. Most of the cars filling up at the place I used were Mercedes Taxis.
The exhaust smelt like a chip shop. The price was slightly less than the price of normal diesel from a super market. Fuel consumption was supposed to be slightly worse, but I could not measure a difference in consumption or performance.