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09.01.2021, adminWith the special wobble Lorem lpsum 329 boatplans/boat/boat-stream-math-list boat stream math known as "ripstop"?it's?made to continue a little diseased meridian. Armed forces Aluminum Boats With Tunnel Hull Up Travel Armed forcesafterwards did we only operate zip ties to stick on a pieces.
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Looks like bad pre paint preparation. Re: Problem with aluminum on boat No, the boat is not painted. What you are looking at is just aluminum. I think if you double click on the picture you can get a closer look. Salmonseeker Petty Officer 1st Class. Joined Jun 11, Messages Re: Problem with aluminum on boat My guess would be the aluminum is oxidizing, I think it is common on aluminum boats in saltwater.
Do a search on aluminum and oxidation. Re: Problem with aluminum on boat I just checked out the Custom Weld website and it says they have a lifetime hull warranty.
I would give them a call and ask them if they have experienced this problem. I have had very good responses from boat manufacturers when I called them directly, most are very helpful and have knowledge specific to your boat. Joined Aug 27, Messages Re: Problem with aluminum on boat hmmm maby its like crop circles man Joined Aug 12, Messages 5, Re: Problem with aluminum on boat Is there a weld on the inside Boats And Streams Problems With Solutions Pdf 00 of the boat where the marks are?
At any rate I would get an anode on the hull some where, that should help. Corrosion on aluminum isn't like rust on steel, it is more like when copper turns green so it should never go all the way through and remain a surface thing. Rowroy Petty Officer 2nd Class. Joined Sep 4, Messages Re: Problem with aluminum on boat abf said:. Re: Problem with aluminum on boat Thank you everyone.
We have talked to Customweld they said it was corrosion. They haven't gaven any advice but to wash it after we bring it out of the saltwater. I seriously wash my boat everytime it comes out of the salt water with saltaway and then I wax it. I look at all the other boats at the boat launch and I have never seen another boat like this.
We also have a anode on the boat. The anode is clean. Its not picking up any kind of corrosion. Something is wrong, and I just don't get it.
Joined Dec 2, Messages 1, Re: Problem with aluminum on boat I have an Alumaweld boat I use in salt water. I just wash it with fresh water and a brush, also every time.
I have had no problems. Make sure you have the correct type of anode and check your ground. Joined Mar 19, Messages 3, Re: Problem with aluminum on boat It looks to me like you need to look into some sort of anode to prevent galvanic corrosion. I'd also look close at your electrical system for a ground fault of some sort. I would clean and seal those areas once you find the source of the problem. I run a sacrificial anode on all of my aluminum hulls that see salt or brackish water.
None have ever shown any sign of oxidation. Joined Jul 27, Messages Re: Problem with aluminum on boat where on the hull are u guys placing the anode for the aluminum boats? Joined Sep 22, Messages 7, Re: Problem with aluminum on boat That's galvanic corrosion caused by electrical current. Is the anode for sure connected electrically to the hull? Is there any other source of stray voltage, like a depth finder or trolling motor, or voltage on the engine frame? Using the boat hull for ground return for lighting?
Good boat builders use very skilled welders. But cheap aluminum boats are hastily put together, and the welds can be a real problem. So make sure to only buy good quality build when you're looking for aluminum. Lots of low-quality alu boats - There are a lot of low-quality alu boats out there. Especially US build boats have a bad rep. Because aluminum is so cheap to build, lot's of cheap alu boats are being built. And that means that the overall build quality is lower.
So the welds aren't as strong, the hull isn't well-constructed or fitted. If you're buying an aluminum boat, you really need to watch out for these budget ones.
More noise from water on the hull - Water crashing into aluminum makes a lot more sound than water crashing into fiberglass. Nothing disastrous, but important to know in advance. Condensation - Old aluminum hulls and steel ones as well suffer from more condensation than fiberglass. However, this is only the case if the boat is not well insulated. Modern aluminum hulls are properly insulated, so condensation shouldn't be a problem.
So if you own an old boat, be prepared for a damp interior every now and then. Large repairs are difficult - You'll need a professional welder for doing large hull repairs. Not many welders are proficient in aluminum welding, so be aware that this might cost you a pretty dollar. Wiring needs to be done carefully - Because of the risk of electrolysis and galvanic corrosion, you need to be extra careful with wiring and electrical systems.
You don't want any electrical current running to the hull, and you really don't want copper wire clippings in your bilge. It will create small holes or pockets in the hull, which may even sink you when unnoticed for too long. Aluminum is cheap to build with, so it's used a lot for budget boats. As a result, most aluminum boats are hastily put together, so of bad quality. The thing with aluminum is that if it's used in the wrong way, it will become less and less very rapidly.
A lot of cheap US boats are welded badly, or just spot welded, making the hull weaker. So these boats are not very suitable for open seas, as they can't take the current.
Another reason is that aluminum is a popular material for self-builders. Believe it or not, but sometimes self-builders don't deliver the quality needed for a boat that will last you a lifetime. But it's not really fair because a hull that's welded properly is very strong and will last you a lifetime. Overall, if you stick to reputable boat builders, and make sure to get advice from a boat surveyor that's specialized in alu, you'll be fine.
It may even be the finest boat you've sailed. United States manufacturers have produced a lot of aluminum hulls of bad quality. But these are mostly inland, flat bottom boats, pontoon boats, power boats, and so on. There are actually very good US and Canadian sailboat builders as well. When you have an aluminum hull, your number one concerns are electrolysis and galvanic corrosion.
Aluminum is anode to almost all other metals, except for zinc and magnesium. That means that when it's in contact with other metals, aluminum will corrode away. This is called galvanic corrosion. So you will have to install a sacrificial anode. You will also have to replace this quite often, on average every couple of years, but in some conditions every couple of months, or even weeks.
I recommend to use OEM anodes. If you don't want to, this is the kit you want click to check current price on Amazon. Make sure everyone who steps onboard puts all of their cash change in a jar. You don't want any metals in your hull. A copper coin that's left unseen can ultimately sink you. If you add an electric current to this process, it speeds up the corrosion. This is called electrolytic corrosion. This can happen if you have a short in your electrical wiring. Aluminum, in particular, can corrode away very quickly this way.
So you need to make sure your wiring is properly insulated. You don't want any electrical current running through your hull!
In general, you need to be extra careful with electrical systems and wiring on an aluminum boat. You also need to pay attention to the marina. If you dock your boat besides steel boats, this can increase the galvanic corrosion. If you add dock power to the mix, your baby starts devouring anodes like it's chicken noodles. Aluminum also needs a lot of attention paint wise. All fittings and the bottom needs to be painted more often than fiberglass.
It's important to keep up with corrosion; once saltwater comes between your fittings, there's no stopping it. But the horror material some people claim aluminum to be is just not true. There are experienced sailors out there with tens of thousands of miles on there aluminum hull, that still use the original paint.
They only repaint the bottom every couple of years. What is the best material for a boat? The best material for a boat depends on the water and sailing conditions, but generally aluminum is the ultimate boat building material. It has a very good strength-to-weight ratio, which is important for a boat. It does, however, require proper maintenance. Especially in saltwater, it needs quite some maintenance, due to electrolysis.
Is aluminum stronger than fiberglass? Aluminum is up to 10 times stronger than fiberglass. It's one of the strongest hull materials if properly built. Fiberglass will crack on impact, which creates leaks. Aluminum doesn't crack as easily and is famous for never leaking. Aluminum is, however, prone to galvanic corrosion, which fiberglass is not.
What's the difference between galvanic corrosion and electrolysis? Electrolysis is an oxidation process in which metals corrode when submerged into an electrolyte.
It leads to galvanic corrosion. The most anode metal will eventually corrode. When an electrical current is added to the electrolyte, it speeds up the corrosion process; we call this electrolytic corrosion. Thanks for a very useful and well done story comparing the two materials. Makes aluminum look more interesting - like Garcia boats. Well done! Shawn, Thanks for the good article.
Please see www. I still think aluminum is the finest boat building material available for sailboats. But why would you? Agreed, aluminum does not like paint.
And fortunately, it does not NEED paint. Our Holy Grail is only painted under the waterline and on deck to create a nonskid walking surface. Otherwise, paint is not needed. In 29 years of service, the underbody primer coat of paint has remained perfect. It was applied correctly and has served as a barrier coat which has never needed renewing.
Further, it is that crucial coat that protects the alu. Does anyone have any experience with Herley Solar Power Catamarans? Is the company known for good build quality? A sailboat doesn't have to be expensive if you know what you're doing. If you want to learn how to make your sailing dream reality within Aluminum Boats With Tunnel Hull Data a year, leave your email and I'll send you free updates.
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