STEEL HULLED AND ALUMINIUM HULLED HEESEN SUPERYACHTS - BUT WHY???
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- Опубліковано 14 чер 2024
- Subscribe to Heesen Yachts' UA-cam channel at / heesenyachts
Heesen are famous for building some of the world's finest aluminium superyachts, and now also for superyachts with steel hulls. But why do they build some from steel and some from aluminium? And how do they join the two metals together.
Heesen themselves kindly answer those questions. - Авто та транспорт
Thank you Mr. Seal, and especially thank you to the folks at Heeson for the time and effort to answer so many of our questions. Wonderful.
Excellent presentation and well done Heesen for your explanations.
Gotta say, Heesen did a great job answering questions. I would love a full hour listening to them talk about their craft. I feel like with your channel, and the other channels that you are friends and affiliated with on youtube, that the builders are possibly becoming more popular than the owners. Something that many of the builders are catching on to. You never know, some little youtube viewer with only 2 pennies in their pocket could become a rich tycoon one day and these videos might make them sway their decision to who they want to hire.
These speakers were very detailed and specific while using lay details. This is a rather incredibly informative video.
Yes!! Awesome. Thanks David.
Glad you enjoyed it!
It exceeded all my expectations. Thanks again.
I am just going through the yachts on Heeson’s UA-cam channel now and they have some beautiful yachts. They’re clearly a high performance yacht builder.
This was outstanding!! Thank you David! And, thank you Heesen
Bravo David!
We have to go with steel because Brits and Americans can't agree on how to pronounce "aluminum." 😂
😂😂😂. Don’t get me started on “basil” and “tomato”!
@@Yachtsforsaleblog Or "Gigayacht" and "jigayacht." :P
Americans use *aluminum* and Brits use *alumin i um.* ;)
@@Yachtsforsaleblog Or "nuclear" vs "nucular", or "Van Gough" vs "Van Go".
Or directly relevantly for yachting... "coupé" vs "coop".
*cough* zed *cough*
Thank you Mr. Seal and Heesen yachts for that explanation…..
Really enjoyed the interviews and all those who participated. Great presentation! Thank you all.
Thank you so much Heesen! And Mr. Seal!
I am quite curious the corrosion maintenance cost on a steel hull, vs an aluminium hull of similar length/beam .
Bedankt Heesen voor de uitleg!
Excellent insight into the engineering side of building these yachts. Thanks to you and Heeson.
Great video David many thanks for sharing it with us land lovers
Here is a reason why I like this channel, thank you David and the team.
Awesome videos, incredibly informative and with such a high level of attention to detail. Getting a company like Heesen Yachts and it's executives to give direct comment from us peasantry is greatly appreciated. Thank you! Keep up the great work.
Wonderfully informative video. Thanks, David!
That was pretty amazing. Thanks to Heesen and David seal. Well done.
What an excellent informative video, thank you very much David and to Heesen for the great explanations.
Awesome!!!! Thanks for sharing
I love that reverse window style/look.
Regardless of speed - or lack of - it has that 'Get the hell out of my way' feel about it. Add to those nice (!!??) sleek, gentle curves...
Yummy. I'm very quickly becoming a fan of the company.
I had the same thought re windows...
Guess I'll have to order those on my next and first custom blue water! ; )
thanks to heesen- they demonstrated strength and character with their reponse
Hi David. Another fantastic video. Great video thanks 😊
Thanks so much for the update
Really great and informative video really enjoy your presentation David 😃
Excellent content thank you
Hi David, this video was really interesting! It's really great when you can involve the experts to talk about their craft, amazing shipyard, awesome video!
Questions I've always had, finally answered. Well done!
Great and informative video, thank you
Best video on your channel ! Congratulations!
This was fantastic!
Much obliged for the info. 👍👍👍
Excellent and thanks
good advert for Heesen. Crossing oceans in near gale winds, I have found a steel deck+hull to be a quieter, more comfortable ride for long, continuous passages over 2000NM. Also, steel can survive a modest impact: Al and GRP cannot. Al corrodes just as easily as steel in salt water. etc.
Great content.
Great video sir
This is the most informative video from you to data.
Love to hear the professionals go into the details, especially the guys who are literally the hands on guys. As we are called in America the blue collar guys.
Really fantastic that they were willing to take the time and money to produce videos like that. Fantastic. If/when I win the lottery they will be the first yacht builder I contact :)
Very interesting.
Very educational.
Had subscribed to the Heesen UA-cam channel already quite some time ago 🤓
I am addicted to the music after watching almost all vids hahaha
Wow! Great information, I have heard about it but never saw the material in reality. The negative (inward sloping) windows make it stronger in high seas and have at least two more benefits. One a better view with less reflection and the second a cooler temperature on the bridge as there is less direct sunlight flowing in.
I would find it interesting if they have ever thought of combining Aluminium with Carbon/Kelvar and glueing them like currently done in Aero and Car industry.
As far as i know Heesen doesn't want to work with composites due to environmental reasons.
Yo great vid bro loved it
Quite enlightening, thank you very much. I know it is a bit much to ask, but I'd like it very much if at some point you could produce a sort of step by step video of the construction of these fascinating, larger superyachts.
Well presented. It is refreshing when a presenter who hasn't the technical knowledge of a subject (mating Alu/Steel) - defers to the people who do....... for the answer.
Hi Dave recognized your voice on a video of Benetti recently wasn’t able to comment there maybe you could give them a nod, good marketing and all if you let your viewers discuss and built a small community.
Hi Arno, yes...I do a few collaborations with Benetti. I completely agree with you, everybody should allow comments on UA-cam channels, it's great for engagement.
Haha heerlijk Nederlands allemaal! Maar top job hoor Heesen!
Love the video! Where did you get that lamp though?!?!😍
I'm learning. I didn't know this material existed. 15 % doesn't seem like too much damage. Mostly, if what's inside the yacht is what determines how much your pocket will suffer... Carlos is where the magic happens... Aura, not only the name is beautiful but what a hot superyacht (cupid just got me). I love the simplicity of the interior design. Talented designer... Heesen (I expected a German accent) 100 % English. Interesting questions and answers... ⚓
Whatever happens to Wider Yachts, are they still in business... thank you for your continued amazing content.
*Yacht broker:* You can't weld aluminum and steel together.
*Curious person:* How do you put them together on the same boat?
*Expert:* Explosions.
Hummmm, I thought they answered that question very well.
One thing I didn't see mentioned is the collision/impact differences. In "general" steel is a lot more ductile and will deform from an impact, whereas aluminum will tear and buckle. However this rule might not apply for the very specialized alloys used in ship hulls. So I'd be interested in an expert opinion as to differences. My other thought is that for a boat with the proper equipment in steel, if you got a small puncture, you could grab your underwater welding gear and dive gear, and a metal plate (hammered to the right shape on your workbench anvil), and reseal the hull. I don't believe that is possible on an aluminum hull. But maybe this is such a rare occurrence that it basically just isn't worth considering? Or maybe there are other solutions like some type of underwater curing rubber sealant that can be used in an emergency?
I don't know how in terms of marketing as for a charter this is the perfect option !!! But for your own pleasure and from the point of view of the owner, iron and aluminum can not be categorically combined because the effect of water infusion on the metal no one has canceled Yes, and many say that matals are slowly moving into the past and future for Carbon! Thank you very much for the very instructive material for many people
Hello this two alloy structure is often used for fisher boats , the main raison why we can not weld both alloys on each other is the different fusion temperature, that is also why first the steel alloy is welded witch has a much higher fusion temperature than Aluminium, on the longer term the electro-potential difference between the two alloys will have the joined corroded away in no time.
New knowledge #TriClad materials 🤓
Refreshing to see questions answered without all kinds of roundabout nonsense!
This begs the question: How big can you build with fiberglass ?? Thank you for this video.
My guess would be that if you build using a steel frame, you could go as big as you like with either material...
Hi!
One question
About "niobium (Nb)" in steel, Wouldn't it get stronger?
P.S. My english is not good... 🤷♂️
please make a full video tour of lana please please....
US Navy Independence-class ships have trimaran hulls made entirely of aluminum. They could do 40k. They are about 418ft (127m).
Just for reference when talking about size of alum vessels.
The australians are building 130+m ferries and warships from aluminum.
Anyone still on the fence about aluminum hulls show look at Utopia V after her accident with a tanker.
Tanker sank, Utopia V went to a port .
Seriously sold me on Aluminum hulls.
Please read! They keep talking about aluminum being lighter and then they put in larger engines. My question is, what about aluminum with 'steel engines'. They keep comparing aluminum with faster engines vs steel with slower engines due to weight, but what about the transverse?
Why not use transparent aluminum? Much stronger and can hold multiple whales in the bilge. *Hoping someone gets the reference*
Someone did :)
Great show, but it didn't address the differences in each material's ability to withstand an impact with floatsam such as a large log etc..
Whats the difference between a nautical mile and a normal mile?
The big advantage of aluminum is when you compare to a GRP, fibre glass yacht.
How much stronger is aluminum than steel?
For example, there is a rule of thumb in boat building that aluminum is roughly half the strength of steel at one-third the weight. This means that an aluminum vessel can be built at a given strength that is two-thirds the weight of a comparable steel boat.
💯🤝👍🏻👍🏻👍🏻👍🏻👍🏻🍸
which are better as far as speed/range goes ? diesel electric like wider ? or the full diesel ones ? and if the diesel electric is the better option, why doesn't everyone shift to that ?
also, very important question. i saw that the new princess x95 has awesome big windows at sea level, which allows awesome views as the boat is on the way, why aren't there more yachts who have that ?
i mean... with the view from the vip cabin from the x95, i would actually prefer that room, and let someone else take the upstairs master cabin.
Diesel Electric is great for range and low emissions, but they tend to be very slow. If you want a 20 knot + yacht then diesel electric is not a good solution. Also, due to the size and weight of batteries most diesel electric yachts tend to be at least 150' in length.
As a chemistry student I think I can help answer the first two questions:
Classical Diesel engines will be better in the combination of both speed and range and probably even if you focus on just one of the two than electric Diesel propulsion (DEP). Let’s assume of course we talk about identical hulls and only vary the type of propulsion.
Looking at range first the reason being that in order of transforming Diesel to thrust in a traditional Diesel engine boat lost energy occurs in the form of heat. This happens at the engine, whereas in a DEP system lost occurs twice; once when the Diesel is translated to electricity (try touching a Dynamo after your next nightly bicycle ride) and again when the electric engine converts that into thrust. In other words you would need to plan more room to accommodate enough Diesel and Battery’s which makes the boat heavier which affects the range.
In regards of speed I’d assume the same laws of physics apply as in cars: a Tesla is immensely quick to get to 100km/h and even a little further but the ideal cruising speed is, despite its good aerodynamics, lower than that of a Diesel Mercedes. Putting that into the water it might be possible that a DEP accelerates quicker but at higher speeds the range will be gravely reduced compared to a classic Diesel Engine who will reach the same top speed, depending on the engine that is, but will likely be able to hold that speed for longer.
@@Yachtsforsaleblog i see. they are two different type of uses for each. lol it's funny how specific the yacht industry is, depending on what you need.
@@arno9711 i appreciate the input 😊
If you have a planing boat (not sure about semi-planing big yacht) where your two humps of max efficiency are at idle and 80% max power, it wouldn't help. I assume you are talking about a system where little to none is stored in a battery - but rather the motors and shafts are connected by electric generators, electric motors, and wiring, and not driveshafts. With a top efficiency motor of 98%, and top transformer efficiency of say 96 or 97%, and back to the generator, you are down at least 10% from the transfer, versus a 3% loss from a gear set or universal drive, right angle gear (like in a pod drive), or whatever. But the great benefit can come if you are interested in speeds beyond just the "one best speed". If you normally run at 60% load in a displacement load, but want to run at half that load... a diesel at 30% load is WAY off it's peak efficiency load, so instead with diesel electric you turn off one diesel completely and run both electric motors from one diesel, which is then back at a more efficient 60%. The gain from that optimal load with outweigh the loss in the electrical.... but look at how much more expensive your engine room has become! And you can't repair electric generators/motors in the middle of the ocean, so unless you have space to carry spares there are a lot more failure points.
The other reason you do it is when your number of shafts and the number of diesels you need aren't equal... if you want one shaft and two motors, or two shafts and 3 or 4 motors or whatever. Like a big cruise ship will usually have 4 or 5 motors - two for electricity and two for propulsion and they rotate using 4 of the 5 motors so one can be under service/inspection while underway. The reason you might want one screw and two motors is because you don't care about draft and want one hug center screw protected by the keel for efficiency, or you might want two screws to either side of the keel to reduce your draft, if you need that...
could they put a door over the tenders to cover them like with Lady Li?
One of the first questions has me puzzled. What is involved in the 'structural maintenance' of a steel hull and how is it different than an aluminium one? Thanks.
Steel or Aluminium..?
Yes.
i tought they bolt them
If overall costs of steel vs aluminum are within 2% and both are of equal strength and aluminum is lighter and therefor faster, why not always specify aluminum ?
@@Sidowse thanks for the detailed and understandable response. Your view of all aluminium yachts now makes more sense.
How about titanium? are titanium superyatchs possible?
I wonder... titanium is a very tough metal, which I would think would be important for a hull. Not sure where it is on the galvanic scale and if it could be protected by normal methods. Actually - now that I think about it, aren't navy subs titanium??? Good point.
If you wear willing to spend a lot more money for the Titanium then sure why not .
You sure they're not joining aluminum and steel with adhesive? 🤔🤔🤔
We need a yacht with a Carbon Fibre Hull
Azimut grande s10.One light hit and sinks,just like a supercar againts a wall at 10 km h.
@@123OGNIAN Carbon Fibre is stronger than steel, maybe supercars are made of tin
The hull design has more to do with the draft than the steel or aluminum construction. Steel is going to be used in a full displacement hull. Where an aluminum boat is probably going to be semi-displacement.
What are you skimming over Mr Seal?Please share..Thank you
How doesnt the executive chief officer not know the maximum gross tonnage or size for aluminium? wouldve thought thats an easy question!
Why carnt you achieve the same top speed with a steel hull that you can with an aluminium hull
Hi Paul, Steel is a much heavier material.
It's the same reason that my 60Kg colleague Ed beats me at gokart racing.
You can cross the Atlantic but not the Pacific with that range...
Why do they build the super structure from carbon fiber?
Cost.
Aluminum. Al-u-mi-NUM. N-U-M.
Only Americans say aluminum, the rest of the world says aluminium.
In Germany we Saint Aluminium.... Yes Yes Yes so.sorry we are not the rest...
You talk alot about the design and construction aspect of the two metals, but only briefly touch on the owner/operator experience. Here are some theories and more questions based on no experience whatsoever:
Aluminum, being highly corrosion resistant, might give the ship a lower long term maintenance requirement. Over time, that could pay for the higher upfront cost of production. Also, maybe it could stay out of drydock longer?
Also, you mentioned high speed performance, but do people optimized aluminum ships for fuel efficiency?
The lighter aluminum ship might get tossed around much more easily in weather than a heavy steel hull, making the open ocean an uncomfortable ride. As you said in the video, that would be offset by the ability to glide over shallow reefs with ease.
For resale, I guess it depends what most people are looking for in that size of a ship. If people don't mind being relegated to the Caribbean or the Mediterranean, then the maintenance-free nature of aluminum might be a great selling point. If people are looking for an "I can go anywhere I want" vessel, it might be harder find a buyer. I'm not adequately informed on current market trends.
Can anyone comment is this?
I have only information from my reading, but my understanding is that since both hull materials require annual haul-out and bottom anti-fouling paint, that the cost of that must be at least 90-95% of the cost of corrosion / barnacle hull maintenance costs... so the different can't be more than a few percent.
Questions thoroughly answered ?
Not really
Have you overcome electrolysis corrosion in aluminium hulls ?
Yes.
How ?
...............
no answer
Lol
This is old technology. Nothing to see here.
Steel breaks ( Think Titanic ) and aluminum stretches
Steel haul all week long. Aluminum hauls are way to soft. The slightest bump to a log or anything floating just under the surface you will go down like the Titanic.
Steel is better
The way you Brits say "ALUMINIUM" is so funny to me...
I think we spell it differently too!
Steel is better, I KNOW this, I could give a fluck what some English men drinking tea in suits say about it. Aluminum is shit.