Which Hull Material is BEST: Ferrocement | Sailing Wisdom
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This is the 3rd in a 5 Part Series on Hull Materials.
Cement boats are actually separated into two categories, Cement and Ferrocement. Cement boats are plagued with problems, but Ferrocement boats have created quite a following over the years thanks to their durability and seaworthiness.
Watch as I interview a fellow cruiser who lives and cruises full time on a Ferrocement boat on his journey around the world!
0:00 Intro
0:27 Ferro Cement Hulls vs Concrete Hulls
6:15 What Happens if You Crack Your Hull?
9:29 Should You Buy a Ferro Cement Boat?
10:57 Outro
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Thanks for doing a ferro cement boat. It is my preferred material. I built a 44 ft ferro boat in the seventies and lived aboard it for 4 years. I never sailed my boat but a mate built the same design and I sailed on his boat from Lord Howe Island to Sydney. The difference with ferro is that while it is a bit heavier, the weight is distributed throughout the hull and the boat motion is far kindlier than fiberglass. It is a a much smoother ride. My hull was 19mm thick and the hull had a design weight of 33,000 lb. It was a Canadian Samson C-Quoia. As your guest there was saying, properly mixed ferro cement is impervious to water. The key parameter is the water to cement ratio which should be between 0.4 and 0.45 . There are additives to add to cement, however as your guest was saying you can build a ferro cement hull with a cement and water based epoxy mix. This is extremely strong. The best example of this was the 73 ft yacht Helsal which was the first boat to win the Sydney Hobart Race with the trifecta of line honors, break a race record, and win on corrected time. It was another 35 years before a modern maxi yacht achieved the same. Helsal’s hull which was post stressed for strength was just 10 mm thick. I love ferro cement apart from having a lovely feel on the water it is also the most natural material apart from wood, and in harmony with its environment. It is built out of fossilized reef after all. I was designing a new boat to build based on Bristol Channel Cutter lines but decided I was too old and would never finish it so bought a Southerly 135, and now worry about osmosis. My first boat had a swing keel, but a center board up 4’6” draft. I love the center board up draft on my Southerly which is 2’10”. Any one wanting to know all there is there is a great book by Bruce Bingham on Ferro Cement Boat Construction, which you can find on EBay.
Thank you for this information! There was a bit of a language barrier with guy I interviewed so I still had a lot of questions.
There were many things he said that opened my eyes to the awesomeness of ferro cement but the more I read the more questions I had. That book will be put to good use!
I hear it's like a Cadillac of boats. And it won't catch fire.
2:26
The thing about Ferro-Cement is ya really have to build a big one....yes, I know plenty of smaller ferro boats have been successful...but after 50 feet, a ferrocement boat is generally lighter than the same boat built of wood, as there are no interior beams, stringers etc. I built a Herreshoff 55' Marco Polo design back in the early 70''s, she was always light on her lines even when loaded for passage. I certainly had a grand experience with mine, sailed around 50k miles, survived a couple hurricanes on anchor in Tahiti and pushed a good bit of ice in Alaska. The large disadvantage with ferro is the resale value, if my boat had been built of something like Airex foam sandwich, it would have been worth a couple hundred thousand....but people are loath to invest in something they can not prove is sound. Answers to questions such as 'Did you use Chromium Trioxide in the water during cementing? cannot be proven to be truthful. The Chromium Trioxide prevents electrolysis during curing...otherwise very tiny bubbles form around the rods and allow salt water to travel along them once in the water. The strength is a good bit better as well....I cannot quite remember exactly, but 20-25% seems familiar, but should of course be verified. If money was no object....Airex foam sandwich....but that build would cost considerable more than the $35,000 I had in the boat when we left for our first passage. After 1975, things got way more expensive....I would never have been able to afford it now. -Veteran '66-68
Those hulls are incredible! I personally think they are the best material for a boat hull (when looking at metal, fiberglass, or wood).
I had a 55' ferro cement boat up in Alaska. I ran down everything in that boat. 😂 Nothing could stop me. Was bulletproof.
That’s incredible! These boats are tanks!!
Nice to see a favorable review on ferro boats. I have a beautiful 55’ Samson I absolutely love. Sails great and is super seakindly and comfortable. He is correct on how durable these boats are. I have owned every hull type except aluminum and this ferro is by far the easiest to maintain in my experience. Thank you for this video!
Making this video was a very eye opening experience for me into the wonders of these amazing boats!
I drove a concrete mixer truck for ten years. At first I thought it was nuts to sail in a ferro cement boat. But now that’s what I’d prefer! I’ve done lots of research and it just makes sense. If the boat is poured, finished and cured correctly then you have a solid rock. Less maintenance and way easier to fix. I’m going to buy some Samson or Hartley plans and pour my own boat. I will have experienced concrete finishers and we will pour the whole thing all at once. Then I will cure it correctly. These boats get a bad reputation because of inexperience. Sad because they are honestly the best boat there is!
When I went into this project I thought ferro cement boats were a death trap, but the more I learned about them the more I became amazed at this incredible hull material. I really do think it’s the best hull material for a cruising boat.
I saw an old huy in a marina in a clipper style yacht very big and rough looking. I wondered how he dared put to sea in that then later on I realised he didn't.
He had a dirt cheap home just moored up forever. Smart guy.
Ah, the live aboard.
Interesting this series about hull material, as for ferro-cement I remember being part in building one in a boat yard in Montreal.QC area in late 70's, this yard built quite a few at the time, I was working on a Samson C-Breeze and a C-Lord was built right next to it. My part included doing all the lofting and building the mold Upside down and included the bridge and bulkheads, what the boatyard was trying to achieve then was to try to recuperate as much of the mold as possible to build another one. If I remember right the hull was built with square 1/2" galvanized mesh and 3/16 steel rod to make the hull 5/8 thick before cementing. I did not see the work completed because I left before the end of the project and someone else finished it. I did however see the actual cimenting of a C-smoke if my memory is right, it is quite the event since it is all done in one day with quite the crew inside and outside of the hull with vibrators to vibrate the ciment trough the layers of wire mesh and the crew inside indicating with metal wire the areas where cement had not come through enough. Good memories. Indeed the person interviewed is hard to understand .
The build process is very impressive! Sadly there are not many cement boats cruising to interview their owners. If I find anyone else, I will do a follow up interview on the subject!
Adding in captions might be an idea because with the language difference and that his diction was very mumbled, it was really hard to understand what he was saying. The auto-gen captions are a comedy set of their own!
Haha! I bet. I’ll have to see what the auto captions say 😂
Yeah, I can't understand him.
👍Good morning, great video!!!
I'm an architect and let's talk about reinforced concrete. I have also worked as a naval architect.
Do you criticize, do you know any malls, buildings, bridges, megastructures... that are not made of concrete or steel?
Did you know that mega structures like bridges that can withstand dozens of tsunamis are made of concrete? Some with steel rebar, some with fiberglass rebar and some with fiber concrete?
It's ugly, shameful, to turn your ignorance into prejudice for lack of technical ability to make a comment based on prejudice.
As mentioned in several comments, many concrete sailboats were made without criteria and this is dangerous. When structural masonry with concrete blocks appeared, many buildings collapsed, which generated a retreat from the technology. Here in the city of São Paulo the honey is used in the construction of buildings.
Today we have additives that make concrete resistant to sea water, fiber rebar, hydrophobic coatings... technologies that were unthinkable in the past.
So the question is not whether old boats are good or bad, but whether modern boats are good or bad.
Which one is the best? depends: Performance, comfort or safety? This project tripod favors one and disadvantages the other.
A regatta around the world? Composite, modern fiber boat.
A very comfortable 150 meter yacht? Steel or aluminum: www.superyachttimes.com/yachts/100m+
A Blue Water? Steel, aluminum or, modern concrete.
Here in Brazil we play a lot with a phrase: "There are two types of Blue Water sailors: "Those who have already hit a coral reef and those who will hit a coral reef!!!"
For those who live in and out of the world in and out of uncharted atolls, this is serious.
Now tell me, if you were to hit a container in the middle of the sea, what material would you choose, if it was inevitable? Well...
Anyway, all materials are great if well made, it depends on the utility and priorities. And everyone can be a nightmare, everyone!
Let's see the most popular fiber versions:
Many lose their keels without crashing anywhere just sailing in strong seas, from single sailboats to the famous Oyster 825 Polina Star III. Just imagine hitting the bottom, fragile, not infrequently entering water.
They suffer osmosis, gain weight each year, or even have compromised hooves.
If you hit a whale, container or logs, you and your family will almost certainly sink.
But... many model offers, easy maintenance, good resale value if good reference manufacturing, easy insurance.
Safe? The safest sailboats are the metallic ones. I don't have scientific and statistical data to talk about concrete, but due to the technology in civil engineering, they must certainly be safer than fiber. Who knows with new manufacturers of this technology proving that they are reliable.
If everything goes well, we will build a concrete sailboat in partnership with a renowned university and we will do real simulations of collision and shear strength comparing its hull compared to fiber, aluminum, steel and wood.
Also comparison of cost and time and ease of manufacture.
Standards will also be created to ensure that others can build safely.
And just to finish, there were two friends who lived on board, who collided their old English classic with a fishing boat that ran over them. Boat intact and they reported that if it was made of fiber, they would be swimming. Yes, this one, old, slower, heavy. Current technology can match the weight of larger fibers as we have a minimum thickness limitation.
When I started making this video, I thought that cement boats were a joke, but the more I learned the more impressed I was with them. They really are an incredible material for hull construction!
Because of the badly home built ferro boats people think they are all bad and run a mile. If you find one that was professionally built you can get a lot of boat for little outlay!!!!! Mine is 35ft long , 11 ft wide with a draft of 5 ft and weighs 11 ton. She is a fat heavy old girl but she will get you there 😎😀😁
And get you there safely!
I live on a Ferro-cement trawler. I love it but I might be crazy
They actually seem really impressive! One thing to note, you see a lot of abandoned ferro cement boats in marinas. No one takes any care of them for years, total neglect, and they keep on floating! They are a very interesting hull material.
@@RiggingDoctor taking care of any style of boat can overwhelming. I think your friend was talking about a cement carbon fiber material made by the University of Dresden. It is probably the future of cement boats.
I'm finding this series very interesting and informative. I wouldn't mind seeing multiple interviews for each construction technique. Different interviewees are likely to have different perspectives and further information. The anecdotes, such as this fellow's crashing his boat into a pier and coming away better than the pier, make the interviews livelier and more colorful. Thank you for such interesting videos!
That would be fun to do as we keep cruising!
I'm really enjoying this series of hull material. I remember seeing similar cement hulls in Cuba over 20 years all over the place.They are likely still going!Very cheap and durable material.
This interview really opened my eyes to the advantages of ferro cement hulls.
A comment about concrete ships. There are several WWI and WWII vintage concrete ships still around. Powell River BC has a floating breakwater made of ten concrete ships. The remains of a WWI vintage concrete ship are also to be found at Aptos, CA.
They just won’t sink!
I love this series.
Thanks!
If carbon bones 😆 are able to replace steel rebar as mentioned then ferro could enjoy a renaissance. But! I know from the aerospace sector that joining carbon rods is very hard to do as they have to be woven together rather than welded. Though would be interesting to see what the cutting edge of this ferro tech can now do regardless.
I looked into it very briefly after this conversation and it looks like loose strands that are only a few inches long we’re being used mixed into the cement mixture. The article I read talked about using carbon, Kevlar, and fiberglass strands in the mixture instead of metal. The result was elimination of corrosion expansion of the material inside the cement mixture.
Basalt. Same coefficient of expansion. Can't rust 3x stronger.
OF COURSE......LOVED IT!!! MERRY CHRISTMAS.......AGAIN!🙏🙏❤❤🇺🇸⛵⚓🤙👍
🎄
Interesting. Wonder why its not more popular? Cheap, easy to maintain, seems strong. I'd like to look at the more modern versions with the newer fiberglass cement. Thanks for posting this series!
It really got me interested in them! I originally thought all those boats were death traps but now I have a new view on them.
Reason why they have a bad name is from the 70s when people were building them in their backyards and didn't have the knowledge to do the job properly. The metal skeleton wasn't put together properly etc. Capt Fatty Goodlander built a ferro cement sailboat that his family and himself lived on for years. He did a interview on sailing Delos a few years ago and talked about the boat and how they made it thru a hurricane on the boat..
8:05 - a towel soaked with silicone as a patch! thats a really good idea, actually.
That was a little gem from the interview!
I always wondered about cement boats, never realised that there are different manufacturing processes
I thought they were all doomed builds but they are actually very interesting and capable!
if you would like opinion of Kevlar boat - I have a boat constructed entirely of Kevlar (both deck and hull but cored construction) by infusion method. I have owned/raced for only 3 years but this boat was built many years ago. Some bulkhead separation from hard driving and some forward bilge cracking possibly from mistakes during a haul out but I don't know the cause. In general a lightweight production race boat after many seasons - Laser 28 in California.
Good to know! If you were on the east coast I would love to do an interview ;)
They're GREAT boats!!!!! And that's why they have such a GREAT reputation among serious mariners and that's why SO many are always being built and put to sea. Also, rip rap and bulk concrete is a very valuable building material, also they can be recycled into sidewalks, back fill for landscaping....jeez when you're done sailing the world in your crushed rock boat you can use the rusty rebar, chicken wire, expanded steel and hog fencing for so many other purposes. Ferrocement boats are THE BEST.
They really are an amazing hull material that no one seems to know about.
The towel with silicone is a Grade A tip.
The oldest known ferrocement watercraft was a dinghy built by Joseph-Louis Lambot in Southern France in 1848
The Romans joined stones with cement that could set underwater, structures they made exist to this day
It’s an amazing material!
Did I hear him say he crashed into a fueling station and then hightailed it out of there? As in a hit and run?
Yep! He was an “interesting” fellow.
yes you understand correct. :) we run out before anyone see that we destroy a fuel station :)))
Durable as all get out, but require maintenance even when it doesn't look like it needs it. When not done can lead to catastrophic failures. If done properly, can be very durable and reliable if well maintained and properly repaired. HEAVY for smaller boats, say under 38-40' , hence slower and less displacement to weight ratio. Getting one insured is damn near impossible and a marine survey, which is typically required for insurance is also harder to get done. Now, there have been some very famous ferro cement boats that have done multiple circumnavigations and both poles explorations and long stays. Most were home built (in a boat yard) by the designer and owner. There were a few made by actual yacht builders. We have a few in our local harbors and it does seem like a love them or hate them type range of interest. Of all types, it woul dbe at the bottom of my preferred list, however would sail one if the right one came along at the right price.
I originally was in the “hate them” camp until doing this interview. It really opened my eyes to how incredible and impressive these boats are!!
hi i sailed the atlantic 4 times in a 22 ft concrete falmouth oyster dredger.lovely boat ,there easy to insure in the uk.
I have seen and heard of many in great shape. Hearing most failures- short life not sinking are due to poor materials and construction methods. Worst I hear was any use of expanded lath.
WWll merchant marine fleet that were not torpedoed mostly were retired and abandoned, refusing to sink of their own accord for many years.
After the interview, I thought about most of the abandoned boats in marinas were all cement!
Молодец, все хорошо рассказал
😎
Great video... Concrete? Do you call a shipwright or a bricklayer?
Cool I always learn something knew from your videos.
I guess it’s the boat Mason’s would sail on 🥸
My dad told me to put my cash into bricks and mortar, I took half his advice and bought a ferro boat
@@darrenj3267 the older I get the more I realized a dad's advice is golden.
TY. ⛵ ⛵ ⛵
👍
Can we make boatbwith ordinary cement? Thanks so much for this video
Yes but it won’t last as long as one with ferrocement
Iv delivered 2 ferro boats up to Fiji a 39 fter &a 55 fter both went very well , 11 boats left Russel & the 55 footer was 4th in , The Sydney Hobart race was won by a ferro boat one year > Still dont like talking about that , A lot of embarrass racers
I had my eyes opened to the amazing world of these stone boats. It’s impressive!
@@RiggingDoctor It is Impressive and thank you for making the video. I am going to do Testing on a Samson C baron 55
Very few ferro cement boats built nowadays , that says something .
It does, because there are so many other materials that are better 😂
Not much info on this one. I have found it difficult/impossible to insure ferrocement (reinforced concrete) boats.
Can verify
The big takeaway was that ferro cement hulls are really easy to maintain and people who cruise on them sail without stress or worries.
They are harder to insure but mine is insured fully comp
@@darrenj3267 Insured by whom?
👍!!!
😎
👍👍👍
This one was interesting!
One of the big issues is that the bare hull was less expensive but the rest of the fit out cost the same as any other similar boat The same goes for maintenance The hull maintenance may be less but everything else is the similar to any other boat I worked in a ferrocement boat yard in the early 70s and saw a lot of owner built hulls abandoned when they realized the cost of fit out
West Coast collection of mastless never rigged vessels.
Yeah, the hull is the easiest part of a boat build. The interior is what takes the longest! (And time is money)
I'm still wondering what exactly his ferrocement build process consists of. He mentions epoxy and 600 cement, or common beach sand for patching, and his boat has fiberglass interior liner and epoxy/gelcoat exterior. But that the exterior fiberglass layer causes osmosis. Maybe a video tour of a ferrocement builder is needed. Also I wonder how to drill through it for fittings etc, maybe requires stone/mortar drill bit instead of woodworking drill bit, etc? He does mention that "the hardest work is drilling the holes". He mentions the frames are now built with fiberglss rod and I think he says, "even carbon (fiber)". There's no way I'd want carbon fiber anything because that is near impossible to fix if it cracks, maybe that is only done for the throwaway-fast-raceboats he mentions. One thing is the shape of cement boats does not seem to be very pleasing to the eye, compared to classic wood or classic fiberglass boats. Maybe that's only because cement boats are built cheap and functional rather than to be classic & nautically architected, something to ponder. What is the equivalent of a Westsail 32 or 42 (most common diy homebuilt fiberglass boat) but made of ferrocement?
Ferro cement boats are so far from common that I honestly don’t even know where to begin to find a builder or a “common design”. Each one I have seen has been a unique story unto itself.
@@RiggingDoctor Perhaps make a skeleton from dyneema woven into a net and soaked in epoxy to harden into a shape. Then trowel the cement on top. Can a ferrocement boat be dinghy-sized or is there some math involved that it only works for very large boats?
Add basalt fiber and mesh and it comes out 155% stronger and more resiliant theres also no corrosion or
electrical interference.
Duca from Odd sailing ...his familly built several cement boats that are still in service.
He never mentioned that when I saw him last. I will ask him about that when I see him next! That’s so cool!!
@@RiggingDoctor
Its also lighter than steel..
There are folks like RAN sailing on Sweden looking for basalt fabric for laminating but can only find supplies at near carbon prices any ideas 💡 ..im sure they would like to know they are building their own boat. ..wood cored.
I think the strength comparison was somewhere on the Basalt Gurus site. Relating to storm proof dome structures staple length seems to be critical ...it is with carbon fiber reinforced materials. 🤔
Basalt rebar instead of steel?
That would be something to look into!
a happy man
A well built ferro cement boat can be very tough and durable. That said, ferro cement was VERY popular in the 60s and 70s with backyard builders. As a result the quality of ferro cement boats is all over the place from absolute garbage to very nice. They are also HEAVY, which makes ferro cement a poor choice for a boat under about 50'. If you are looking at potentially buying a ferro cement boat is is essential to learn everything you can about the construction. Quite a few of the home built boats used very poor materials since a big factor in building a ferro boat was doing it on the cheap. Consequently, materials like chicken wire were often used for the aperture. That is a rotten choice, particularly if the wire wasn't galvanized, but it was cheap and easy to get. Ferro cement boats also have really terrible resale both in terms of price and actually being able to sell the boat. Technique and materials used to repair a damaged ferro cement hull are critical to repair success and durability, particularly if the aperture is damaged. A poorly executed repair may seem fine but can simply fall off. As you can tell, I am not a big fan of ferro cement boats. They may be an acceptable option if you have very little money, but you should be prepared to not be able to resell the boat especially if you are in a hurry.
Sorry Todd, I have to disagree with you on a number of points
1) a correctly built ferro boat weight for weight is pretty much on a par with a wooden boat of the same size.
2) there are many examples of very good ferro boats under 50ft - I have a 35ft Ferrocement endurance - she can carry a lot of sail and get a wriggle on when needed but she is a very sea kindly boat
3) yes there are some pretty badly executed home builds just as there are some pretty badly executed home built plywood boats
4) A poorly executed repair to any hull type can fall off. Generally epoxy, cement repairs are very stable and don’t fall off and unlike say an aluminium boat don’t require a specialist to execute
5) Yes ferro cement boats have a poor resale value but they also have a low purchase value so the value change over a number of years is pretty insignificant. If you buy a $150k grp yacht you sure as heck wont get $150k back when you come to sell it in five years time. But a $10k ferro and you'll more than likely get $10k back when you sell it on.
What I find is the biggest objections to ferro come from people who have never owned or sailed one and the biggest fans of ferro are people who have owned or sailed them. I was out in a force 9 sailing mine home after purchasing her and I'm so glad I wasn't in a lightweight plastic boat. I think one factor that many who dismiss ferro fail to realise is that when a particular boat type is cheap it will attract potential owners to buy a much larger boat than they have the budget or skill to maintain and hence why you see examples rotten away in the corner of boatyards but again the same is true for big old wooden boats and big old plastic boats.
Having said that I’d be grateful if you maintain your stance and keep up the anti ferro rhetoric as it keeps them cheep and available to an enthusiast market who really understand the material and can spot a peach from a lemon at 100 yards.
@@darrenj3267 most of the points you actually agree with him. You have just expanded and compared to other building methods.
@@shauntoomey3299 The subtle difference is that most of his points were presented as negative reasons not to buy ferro, what I tried to point out is that some of his negatives were actually positive reasons and the other negative points were actually pretty universal across many hull types so again not really a reason not to buy ferro. But hey read it as you will
i crossed the atlantic 4 times in a 22 ft ferro gaff rig oyster dredger.it weighed 3.5 tons same as the wooden version.i also built a 27 ft paul jonson venus designed for fibreglass .it weighed 7 tons the same as fibreglass.i crossed the atlantic in her but lost her in the azores in 1986 in hurricane charley.
@@robertcooke1774 Paul Johnson Venus eh! Di you know Paul. I heard he passed a while back.
Hung out with him in carracou ten or so years ago. Wonderful vessels.
Anyone here build a GFRC boat? Glass fiber reinforced concrete... Shredded fibers mixed in.
I did some further reading after the interview and came across that technique. It’s a really cool system!
@@RiggingDoctor th-cam.com/video/5HbsmFgdz0g/w-d-xo.html
Sound is a bit low.
Thanks for the feedback
It's a bummer you didn't cover a steel hull.
I never met anyone who fit the criteria to be interviewed. They needed to work on their own boat and cruise full time. Everyone with steel boats that I have met has work done in a boatyard by the boatyard, never themselves.
As soon as I meet someone who does the work themselves, I will make that video!
Maybe subtitles.
Seems like a good strong hull, but 25 ton is a lot of weight.
It really is a ton of bricks
Hello what concrete boat, no way. Saludos
Y flota tambien!
@@RiggingDoctor hello I like it, I did not know that existed, saludos thanks for sharing this gracias
Yes, but is it pirate proof?
Bunkers are made of cement 🏴☠️
Audio quality is undesirable? Not easy to hear 👂 properly at times?
It got improved in the fiberglass episode
Too difficult to understand and comprehend what the owner was discussing.... more detailed explanations of various facts regarding ferro cement would be far more helpful. Perfect opportunity to glean so much more info from a man who owns a ferrocement boat!
*_ Bit of a 'Painful' interview actually! With all due respect to the language difference. _*
It was very painful! He is Russian but he did his best in English.
Hello that capitán spoke English beautiful, probably you only speak English and don’t know that it’s proper name is EANGLO LENGUA. To funny, you can prove me erroneous if you can. Reading a comment like yours is painful. Are you a WHITEAMERIENGLISH ? Saludos Feliz Navidad
I think it was fine.
Sort of used to it from work. Not to difficult.
What did he say, I have old ears and couldn’t understand 90 percent of his report. Sorry
It can be summed up as “Ferro Cement hulls are strong and maintenance is minimal. He rammed into a cement pier one time and broke the dock but only minimally scratched his hull. The repair process was very easy to carry out later. People with ferro cement hulls are always happy and relaxed because they never have to worry about their hull.”
That's the hard Russian accent XD
Yes it was! The takeaway is that cement boats are indestructible.
If the cement boats are so great why will the insurance companies not insure them??
Scared, standards and ability to inspect how it was originally built are near impossible.
they do in the uk.
Almost anything other than fiberglass scares insurance companies 😒
:)
Glad you liked it :)
Herby, we have to renew a interview. I get more info about cement boats :)) we're on DomRep now :)) hope to see you sometime again...
Absolutely! We shall do another when we meet again
Built both....
Ferro cement always look homemade, as its not made in a mold. So no matter what nice hardware you buy for it. The boat still looks homemade. Then you have to be very particular when cementing it or using ferocity. To get the material pushed all rhe way thru the wire plank, without keaving voids.
And then if you hit something....the cracks in the concrete becomes impossible to repair, with the wire mesh plank, as compared a fiberglass....wood...metal...etc.
That’s been my experience with ferro cement boats looking homemade. You can always spot them from a distance.
The material seems really impressive though, but I still chose to live in a fiberglass home.
@@RiggingDoctor Yeah....
The one good thing about concrete....it has a huge compression factor. That if you do hit some. It will spread the force of impact over a greater area.
Anyway....⚘
I think there was a lot of good information in that interview. Unfortunately, I could only understand 10% of it.
His accent is a bit hard to understand but he was doing his best in English.
Go ask the company that's going to insure your yacht what they think of ferro-cement yachts.
Haha! Good luck!!
Northern Reef insures them
He barely speaks any English LOL, You literally couldnt find anyone who speaks English? OMG this should not be on TH-cam.
Not many people have a ferrocement boat. This was the only guy we met who had one and spoke some English.