Is our SAILBOAT going to SINK?! ⛵️ Ep25
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- Опубліковано 13 січ 2025
- LAHAKAI SAILING // ⛵️S1 Ep25 // Join us in this exciting episode where we address your burning questions about the modifications we made in our sailboat restoration project. We've made countless changes to the design over the last year and have been working hard to make sure everything is safe and sound. In this episode, we consult with a Marine Engineer here in Brazil who gives us valuable feedback on the work we've done and helps us identify any potential weight distribution issues that could cause our boat to capsize. Don't miss out on this informative episode as we walk you through the changes we've made and learn how to make them even better!
👏👏 A huge thanks to Gustavo (Marine Engineer and Accident Investigation Expert in the Brazilian Navy) featured in this video, for his advice and help in our project!
➡️ Please visit and follow him on Instagram: / mariner_engenharianaval
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The engineer was a good call. He validated what you have done so far. It will be fun to see the finished boat. Impressive!
It definitely gives us a sense of relief to have a professional affirm the boat design. We love his suggestions as well! Cheers!
That navy dude - great English for a Brazilian. Smart dude!
As soon as I heard him talking about the welds I knew they had a winner. Him. Bro you are hired!
What do you think?? We made so many changes on our boat that some of you were questioning the safety. So we called an expert to let us know if our boat is going to cut it! We learned a lot when Gustavo visited and already started working on some changes on our boat. And we are still considering to make some more modifications before we call the construction a day.
You might have noticed the davits in this video since we shot it before we removed them. We did discuss the balance issue that some of you had but sine we ripped them out we didn't include them in the video. But let us know if you want to hear more about that.
Do you have any other questions that we might have missed??? How do you feel now that Gustavo weighed in?
A very high IQ move, I only had one boat surveyed that I was donating to sea scouts in Houston. I am guessing the electric motor & batteries will weigh less than the original diesel & associated fuel. I do think you should find a dedicated place for the generator for when the sun does not shine. I sound proofed our horse trailer generator, plenty of information on line about sound proofing.
I will sadly miss the davits….they were uber cool in design terms, like not seen anywhere. Glad the Lahakai project continues to move forward. 🤗
I for one do not miss the davits. They looked out of proportion to me
Weight-wise have you weighed-up (ha) the balance of water-maker vs water tankage - large tanks that could serve as buoyancy aids when empty and relying on the water-maker for passages etc.
Yes , and you should ! You guys did the right thing to call in the pro👌👍 Now you have a piece of mind , now get to the ocean ! 😄just kidding 🤔 take your time !.....Do have , a very happy and bless one ! 🙏👋👋
Want to make sure that the ballast will not corrode? drill 2 small holes, one on each end, pump nitrogen into it, nitrogen is heavier than air, and it will fill up the space and all the air (O2) will leak out and over. without O2, no corrosion will take place. I use the same thing when I used to store barrels of corn, rice, and whole wheat in 50 gallon drums, they would last, predictably for 20 years or more.....
This is also a really great idea that we were considering! So fascinating that you can store things for so long with this technique!
Enjoyed the comments of the engineer in response to your statements. The man knew his subject matter - very interesting - so enjoying your videos.
Episódio muito interessante!
I'm so glad you guys brought in an engineer, ☺️👍 I feel your both heading in the right direction ☺️
Us too! Always a good feeling to get a pro to remove any doubts. Cheers!!
Good to get independent verification of what you probably already knew -- Lahakai is sound. Can't wait to see what you do with that blank canvas of an interior. How exciting for you.
The "Lahakai", is looking good, as a non sailor I can't pass judgement on what you have done. I do think you were wise to get an engineer to confirm your changes. I look forward to seeing you and "Lahakai" chasing waves in the future. Take care, be safe and build on.
with the steel grit if corosion is a worry you can fill it with oil get some extra weight an no air = no rust
The Marine Engineer was mentioning weight and balance . You've added more weight with the bow , stern extensions and filling the keel . He noted that the added weight could raise the waterline ( boat sits deeper in the water ) . keeping track of weigh being added as you build on the rest of the project would be good idea . Good video bringing in a expert .
He had a lot of great advice didn't he? There's lots of factors he helped us through. We have a rough calculation based on the original weight of the boat with the old wood interior and motor and we will keeping that in mind as we move forward. Having an expert here definitely made us feel more confident. Cheers!
Keep up the great work. I have faith in you guys. Looking forward to all the progress Ray from Oregon.
Welding is bad keep at it go over it all again but dont give up 😎
Definitely! We're inspecting everything and getting it right this time! Cheers!!
Drill a hole in the keel top and add heavy oil to the steel shavings to displace any oxygen, then seal with a threaded bung. Alternatively melt in paraffin wax.
Ees gud why ew deed dis. Eeet no seenk. Gud yub.
Good news, so keep building it. Will bring you where you want to ! So will the engineer sign your certificate in the end, then you already got a big step done since thats the requirement for getting it insured. Keep working on it, follow all his recomendations, and you will be good!
Really informative video.
Glad you think so!
Hello, it was a great idea for you to call an engineer for the vessel inspection but I would like to make a note about the welding. I do welding inspection and non-destructive testing and it seems to me that the welding that the welding carried out on the hull plates has several "welding procedure deviations" , only the fact that the welder has left an excess amount of material (weld material) is already a sign that the welder does not have much experience. Excess weld material generates stress on the welded areas and over time this stress can lead to cracks. If you remove excess material from the outside, you must also remove the excess from the inside to equalize the stresses then NDT the entire weld. I advise you to do a NDT (Non Destructive Test) on the hull called dye penetrant inspection. With this inspection you will be able to verify several problems that may have been generated by the welder such as cracks, porosity and others. The hull of the boat is one of the most important part on the vessel, if you leave any welding problem that goes through the hull it can sink the vessel. The welding process is not as simple as it seems. In order to weld, a procedure must be developed that involves specifying the material to be welded, the type of electrode to be used for that material and a procedure that establishes the welding process and the adjustment of the welding machine and other details. I hope you did it correctly. At the very least I advise you to look out for an experienced welding inspector for the weld check. Engineers do not have the technical knowledge to evaluate welding unless he is qualified as a welding inspector by ABENDE. Brazilian Association of Non-Destructive Testing or have a degree in the subject. I wish you good luck and hope your project can be finished soon.
Hello! Thanks very much for your advice! It is very true what you say and we've been concerned about the welds since we left our last location. Did you see our last episode? We are doing lots of different topics simultaneously so some things might appear slightly out of order to group together each subject. We hired an experienced welder that works as a manager of the welding department in the company next door and he is overseeing the repairs. They repair large boats like ferry boats. We sanded down all the welds as you can see in the video and then fixed anything that appeared to have issues. We will do a final inspection again prior to moving forward. We completely agree with you, this is the most important step! Ever other one depends on this being right. Cheers!!
The space between the ribs and the hull plating worries me. Heavy seas will flex the plating and may cause metal fatigue. The welding looks erratic and poorly applied. Giovanni is absolutely correct in advising you to have the welding checked by an expert. I fear that the ribs and longitudinal structure are not strong enough. Sorry to say this but I would not go to sea in this vessel as it stands.
The original frames carried this boat from France to Brazil and after 25 years there were no distortions or issues with them other than rust. We then replaced all of the longitudinal frames below the waterline for thicker angle steel bars knowing that the boat will be more active. Gustavo visited us a couple times and we spoke a lot so we couldn't catch somethings on camera without making the episode too long. But he said that the framing was really well reenforced and that he had no concerns about them.
Yes , it is a very great thing to have someone with the knowledge to check out the stability aspect of the vessel 👍 great thinking !👋👋😊🙏🙏
Absolutely! We feel much more confident now!
Wow, your project is going to be super long and time consuming. That boat is down to the bones and building it up is going to take a massive amount of work.
Factor in a big anchor winch and heavy chain with plenty of length should help the balance....
Ah yes, this is very true. One thing he said off camera was that part of weight distribution is when you are done and the boat is in the water, moving things around the boat is also part of balancing it. So we will add the anchor and chain as you said. We have a very small boat so say you have a heavy tool box, we'd consider the best place to store that, perhaps in the stern to balance the anchor. But in bigger boats, it could mean moving around larger equipment.
I wanted to add, all the deferent design changes are great 👍. Really enjoy your videos 🙂
Thanks so much!! Can't wait to show you her in the water!!
The marine architect made some good comments and suggestions.
Using hot ‘pitch, bitumen or tar’ to seal off the steel shot in keel is a good idea ( they have similar properties). But I would suggest you cut a hole now and fit a 3”/75mm threaded pipe plug while it is easy to do and add the ‘hot tar’ down the hole or you will never do it!
If there was ever a leak into the area you would want to know.
The thing to remember is welds are notoriously easy to have pin holes you can’t believe are there but in a tank or boat in water can be a problem . Fortunately the pinhole will rust shut but sometimes its better not to runs in first place!
I know you are in love with the electric motor drive but nobody without a generator is motoring very far with electric.
I hope you have generator or build in a bracket or place to bolt on an outboard bracket so you can fit one ( maybe from the dinghy) for when you have to have power.
There will be times you need it!
Cheers Warren
We actually decided we are going to do his suggestion of sealing the keel. We will see how we will get it in there now. You are right about little pin holes. Plus we thought we should do it now and not leave it for the future.
For the electric motor, we are really looking forward to talking about this much more. Once we get our battery bank in and all the configurations we'll know how much power and distance we can get and tackle that topic of how to live with an electric motor. We'll keep you posted!! Thanks as always Warren!! Cheers!
Super interesting video!! lot of stuff to know.. Security first!!! 😊
Awesome that you enjoyed the interview! We were really curious to see what people thought! Cheers!!
My God! davits are back!
😅😂😂 No they are gone for good. We shot this right before we removed them. Next week we are putting on new ones so stay tuned!!
Happy Sunday! I enjoyed this video as you asked all the right questions and it was nice to see confirmation that your boat is being well built . We need you to have a capable vessel as well as a safe home for your travels and i have a good feeling all the boxes are being checked for those requirements to become real. As a side note i really enjoy watching your subscriber count increasing .... knowing that such a small act as typing a comment can make such a difference in building a powerful network of real friends who you've never met is simply amazing . Cheers!!
Cheers friend!! You have no idea how helpful and amazing reading the comment section is for us! It's not only so motivational but also we get so much good advice that we turn around and use on our project. Plus we love seeing the same people, like you, come back every week. It really does feel like a network of friends that has changed our lives. For real! No joke! Thanks as always!!
@@lahakai While i sadly cannot offer any helpful advice on boat building i do know how to be a friend who stands in agreement with you for only the best possible future. This network (garden) you are building (planting) is very real! The harvest will be bountiful but the real joy is in watching it grow! Cheers my friends!
No she will sail long as u guys don't doubt urselfs
🙌🙏⛵️
😊👋🙏 A very blessed Sunday morning to you two wonderful and bless couple . It is very nice hearing from both of you , as always ! ...😊Don't you worry , your boat will never SINK , NO MATTER WHAT!🙏👍....I am very happy to see that you guys are still pushing on🙏👍👍...... Hear this ! after placing the steel balls in the keel , fill the rest of the keel void with oil , be it , new , or old oil 🤔🤔🤭🤫This will prevent corrosion on the inside if the keel 🤔then weld the top shut 👍..... I wish both of you , a very , healthy , enjoyable , happy and bless day/ journey 🙏🙏👌
Thanks so much!!! Yes, that's also a good idea! we are considering doing his suggestions for the keel now instead of later. Makes sense to do the job right in the present moment and not wait! Cheers!!
Ballancing the boat mathematically rarely works out, as there ar way to many variables in interior materials weight. The safest wat is to go light and add bags of lead shot in the bilge after the boat is in the water and loaded as it normally would be. This als allows the ballance to be changed as you add or remove items(batteries etc), as long as the lead bags are reasonably accessible.
Ishi in English is Bitumen.
Ah that’s interesting! We were wondering if it was tar. Do you know if tar or bitumen are interchangeable in this case?
That was an interesting video nice you got an engineer in to give you advice on the of the boat so now you can go ahead with the fitting out good luck
Glad you liked it! We were wondering if our regular viewers would like and interview video since it's a little different from our regular videos. So happy you found it interesting!
looking good, progress off the fairing of the terrible welding. Stern extension also a good step forward. But the davits will spoil yr possibility to sail.There will be no balance possible. Maybe in light winds, but if the wind change and that will be very frequent there will be a problem to keep the balance, between the important pressure points. Wind on sails/ships superstructure/ships underwater pressure point and G point..
When a boat will be hoisted in this davits configuration the ship will be able to be handled under sail with a little more then 20 knots off wind.
wishing you succes in the coming months and wisdom in the chooses too be made.
Jaap Jonkers Master mariner all sailing ships WWide.
It's coming along, isn't it! We did have a long conversation about the davits with him but we didn't leave it in because we have already cut the davits off. He told us that structurally it is fine, even the balance. But we were concerned about corrosion and their build so they are not there anymore. We are working on a different design now that does take into consideration the vertical space and wind. Keep an eye out for that video coming soon! Glad you like the other alteration! Thanks so much for your support and advice!! 🙌🙌
Your boat has a very nice profile. It will be interesting to see when you put it in the water whether it is balanced. The only thing I didn’t like was the steel shot for ballast. I think you should have used lead.
We would have loved to use lead! Unfortunately it is very expensive and we couldn't afford it. The steel shot was donated. We are going to do his sealing suggestions in the keel to avoid any issues in the future. Cheers!
😊🙏👍❤
The batteries are going to be quite heavy and must be factored into the weight conversation.
We just published this weeks episode and we start talking about the batteries and their weight! 🙌 Check it out! ua-cam.com/video/XZQu3nwzzCg/v-deo.html
The cockpit seems to be extremely shallow!
He was being pretty nice about the davits. 😮
😂😅 We did have a longer bit on the davits but since we already cut them off we didn't add it to the video to keep it short. We'll have the new davit video soon 😉
How will you remove mast if necessary to fit into in to an area? I think you already thought of that by placing a mast hold down welded to top of boat.
The original mast is deck stepped so its easy enough to remove. It isn't the kind that can be done without a crane (like the foldable ones in Europe), but it does just sit in a collar on the deck.
Wow, your engineer find no issues at all, that is really really good.
Overall he said it's good structurally. He did make some little suggestions that we worked on like the welds. And we are considering doing the change on the keel now instead of leaving it for years down the road. We liked his suggestion and we were really happy with his feedback!
Too much good news
No credibility
Get another opinion
People have been making boats pretty much forever. Really, if it will float (right side up) is not the question. It more about stability (which you did answer) and sea kindness (also answered). You already knew it floated right way up, 'cause you moved it via water from one end of the country to t'other. The real question might be what did you learn on that trip? How was the motion? Was it stiff? rolly? How will further finishing affect that?
Very true, we rethought several things as a result of the trip. It was super helpful! Overall she sails like a dream, just some details that need to be addressed to make her even better! Cheers!!
Why didn't you hire someone like Gustavo at the beginning?
He seems to have been qualified for the evaluation that should have been done before purchase.
Perhaps you are referring to a boat surveyor, that is different from his job. Gustavo is a Marine Engineer and accident specialist so he can comment on the complex modifications that we made on the boat especially the distribution of weight which was the main question we were tackling in this episode.
NOT TOO LATE TO SCRAP THE BOAT
May God bless you two and all the workers in the name of Jesus Christ Amen.
I wonder maam if you are hiring for 3d modeler
electric ?..i subscribed at that , great , we need more electric boats.....good luck.x
YESSS!! We will be talking about the electrical install once we finish up sealing the hull. Then looking forward to installing the motor. Did you see our unboxing video?
The dinghy davits still looks sooo ridiculously out of proportion. I looks more like a crane to haul huge mooring blocks out of the ocean.
The battery bank and electric motor probably much heavier than the Diesel engine The engineer didn’t mention anything about the The weight of the massive battery bank the solar the Chargers and equipment much heavier than a diesel engine
We will be talking about all our calculations and installation of the electrical equipment soon. With technology these days, most equipment is a fraction of the weight it used to be, including lithium batteries in contrast to lead acid. Also, the distribution is the key. You can distribute the weight of your battery bank and equipment for balance. You cannot distribute the focus of weight of a diesel engine. Stay tuned for our electrical install!
Please lose the 'noise (bang)' between scenes. I was using headphone when the first one came, nearly fell out of my chair.
I sy make de davit smaller it looks dan prittie it is nou too big for a smal dinkie
Get rid of those ugly oversized Davits, they make the boat look out of proportion.
Did you see our previous episode? This video was shot before so we had already announced that the davits have been removed. We will be talking about the new design in this weeks video! So look out this Sunday for that
Your intro is way to long - you aren't producing a sitcom. Just get to what is happening.
Another week of boring fluff. Build the boat.
its good to consult experts 😉
We agree!!