Tearing apart my wrecked Catamaran
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- Опубликовано: 19 июн 2024
- In this video James takes you on a tour of the damage sustained on Dec 22nd 2019 when Zingaro was nearly destroyed off the coast of Hawaii. Do you think we will get to the bottom of exactly what happened, and what could have been done differently? Watch to find out.
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Excellent video, James. I am no naval architect or laminates engineer but I am a 200-ton captain and marine electrician with over 50,000 at sea in small craft. I built three glass/plywood multihulls in the early 1980s, two Pivers and a Wharram. We were real novices back then and knew little about stresses, direction of weaving, special resins, etc. I doubt any of the boats I built are still afloat. Your commenters are making some interesting observations. From my 40 years in the boat business, many of those years in multihulls, I would conclude you could have gotten another 20-30 years out of this boat if you had remained in near shore waters. That is a lot of service out of a glass/ply catamaran. I think you and the boat have done very well. The butt kicking you got south of Hawaii took a lot of years off the old girl. I am glad you sailed her as much as you did and applaud your outstanding seamanship in getting Zingaro ashore.
Going over speed bumps too fast would have the same effect on a badly welded car chassis.
So happy that you guys are safe.
No-one is talking about the rigging being part of the reason. Dyneema has no stretch and in past videos James is often tightening the rigging more and more. If you over tighten the rigging then either the mast goes down of the hulls come up. I've seen it on a 2 year old Lagoon 62. Add in old wood and continual torsional stress of large seas and this could be the result.
Stoked to see the new boat.
@Jim Nickles I wondered the same thing.
not a conventional mono/cat different reaction to the loads. Plywood and glass, the beams and stringers looked undersized to me for offshore work, just an uneducated opinion. If you look at Wharrams after offshore work they need to be tweaked back into shape...same forces apply to ply boats. Just old and clapped out I think was the reality of this episode..still saved them though.
I completely and respectfully diagree!!! Zingaro had a 25ft breaking sea on her side...she got her ass kicked repeatedly by this sea state. Over tight rigging would have displayed in many ways, and James is an astute enough sailor to catch them.
@Jim Nickles your theory would assume chainplate anchors are weaker than those lack of beams in the boat.. i'd say that makes no sense.
"Dyneema has no stretch"
Compared to what, steel?
You sailed a 40 year old boat 25 thousand miles and got back to Hawaii safely. I think you get a trophy. Good job. I’m sure you will be back out on the water soon.
Thanks for the video, James. IMHO, being in the middle of a synthetic re-rigging of my Irwin 46, the learning curve has been extensive. Since you asked for our thoughts, I believe the biggest cause is the size of your Dyneema standing rigging. You once wrote to me that the one thing you would have done differently was to use heat annealed Dyneema. I completely agree. But there is another issue of even greater importance, and that is the removal of the stretch of Dyneema. From what I have learned, non-heat annealed needs to be stretched to about 20% of its breaking strength before the majority of the stretch subsides. ⅜" has a breaking strength of almost 20,000lbs, and 20% of that is 4,000lbs of tension. Multiply that by the rest of your rigging and you will see the amount of torque all that tension placed on your deck and stringers, just to remove the stretch. I see tears, cracks and splitting, all in an outer hull upward direction, twisting in the direction of your rigging tension. Therefore, the numbers clearly show that oversizing Dyneema for standing rigging is a no-no. Case in point: If your boat came with 5/16" 304 stainless steel standing rigging, it has a breaking strength of 8,200lbs. To match that breaking strength, Dyneema ¼" is 8,600lbs. 20% to remove the stretch is 1,720lbs. Your point about using heat annealed is absolutely correct, because once most of the stretch has been removed, it doesn't need to be tensioned as much to remove the remaining stretch. Personally, I'm using 5/16" (7mm) heat annealed on my main mast and am actually concerned that it may be too big. However, it has a breaking strength of 18,700lbs, but it only needs to be tensioned to 10% of that to remove 90% of the remaining stretch. 1,870lbs is ½ the tension needed for ⅜" regular Dyneema, while it is 2.5 times stronger than the 5/16" stainless steel I replaced. What happened to Zingaro? After numerous tensionings, I believe there was so much tension on your standing rigging, that when the wave slammed against the inner hull as the other hull slid down into the trough, it was the straw that broke the camels back, and it tore your boat in half. From what I have learned, when it comes to using Dyneema for standing rigging, I agree that heat annealed is absolutely mandatory, ...but that bigger is not better. Again, that's my humble opinion. (BTW, love the new boat! May even see you in the SoPac later this year.)
I just want to thank you guys for doing a video on your loss. I am sure it wasn't easy to put this out there. Your documentation will help others.
Just glad you two are ok. When you went silent I told my wife I was worried about some RUclipsrs.... I hope this new plan works out well for you and glad you are sharing what is going on.
Wow, what a mess. All the best getting up and sailing again.. Love your work.
Im strill crying. What a heartsore thing to got through. Love you guys.
we are so glad to see the kickstarter take off and you guys get back sailing!!! been with you guys since the beginning!
Thanks for the tour of Zingaro 1. Take lots of pictures to remind u of that last wild ride. Here is believing that Zingaro 2 will bring many good times, and Z 1 will fade into history.
I'm a carpenter and joiner and a pretty fair shipwright, I would be getting out the chainsaw and cutting it into pieces that will fit in a skip.
Craig Grocott I agreed. I’m a builder and I’m shocked she lasted that long.
Dan221075 I built several houses and this boat would never pass a house inspection and that boat should have been built much stronger than a house! I thought they were all steel I beam reinforced but good grief I didn’t even see a 4x4 beam! Floor joists are 2x12! Never buy a wood boat guys that art died when fiberglass was invented!
I second Craig's suggestion. Find plans that you can reuse your mast and build new. That or find a project boat to start over.
@@peterscherling9000 Hi Pete, structurally wood is great, strength for weight rivals carbon. When used with epoxy can be as low maintenance as glass. My guess is polyester not epoxy was used in construction. The glue failure in the ply might indicate a non marine grade.
@@MrRourk In that video it was never clear about what he was going to do with the boat, he just mentioned that one component could be repaired, but at the end they offered a week on Zingaro 2.
Total respect to you and your crew that you were able to bring it in with that damage in those conditions. Amazing seamanship. Can’t imagine how harrowing that was.
Hi Kimi, hi James!
I'm Matthias from Hamburg / Germany.
First I want to apologize for my bad English, it is a mixture of rusty school English and google translater ;)
What you showed in the video is really incredible! I don't want to imagine what could have happened to both of you if the boat had collapsed under your ass on a longer passage with lots of wind and waves.
What happened to you is also a warning for others, for boat owners, for boat designers and builders, for example also for me. I am not a professional boat designer, but I have studied construction technology and have been working on a plan for a 45 ft catamaran for about 3 years now, which I would like to build or have built at some point later. Right at the beginning of my construction, I thought about how to connect the hulls to the bridge deck in a stable manner. Even then I came up with a completely different solution than you can see on your boat.
I can agree with your analysis of the errors in the construction of your boat on most points. Wet plywood, bulkheads and beams that are too thin, holes in beams (who makes such a shit ???), beams that are interrupted and carried on elsewhere, and in my opinion too small-sized beams and too thin GRP laminates are reasons for the breakdown.
But in my opinion, the boat would have broken apart at some point, or at least would have suffered fatigue fractures if the components just mentioned above had been dimensioned correctly. I see the problem in the small radius at the 90 degree angle between the hulls and the bridge deck. This connection is too weak. I mean the area that you can see in the video at 1:00 min and that is filled with foam under the laminate. The radius is much too small or a 45 degree support is missing between the hull and the bridge deck. And PU foam has no business at this point. This area should have been filled with glass and resin. In my design I chose a 65 degree support, which has a hypotenuse of 1.4 m compared to the right angle between the hull and the bridge deck. If you are interested, I would be happy to send you a few pictures of my construction.
I wish you the best and good luck and I am excited to see how it goes on.
Hello Matthias, your comment is very comprehensive and analytical, but I do not think that this is expedient for the two. The two need a resilient cat to continue the blog without a year or two interruption. I have no idea how far your design has been realized but I see the future in art like this: volt-at-sea.segelnblogs.de/ or similar constructions. Doing it yourself in the field of plastic is not feasible.
@@albertfunk1176 I only gave my design as an example and as a comparison for another solution on how to connect hulls to the bridge deck. Of course, it now takes far too long to build a new boat now.
They dont last forever some are built stronger for sure I'm just glad you 2 got out safe.
I love you guys and I'm sorry that your boat broke, but the journey has always been about the people operating the boat. I'm glad you will be getting into a new Cat and I can't wait to see your new videos and travels. Be safe and we'll see ya on the flip side.
Viewing this video of Zingaro on the hard, was a good educational experience on boat construction and the hull failure. Thank You. Good luck on Zingaro II
Nothing lasts forever, happy to see you guys are ok
Thanks for this video. I thought I had problems with just a dusty boat on the outside. You have inspired me to just clean up my boat and be happy. People don't understand that boats not only can leak from the bottom but it seems most of the damage to a boat is it leaking from the top! Also, the ocean must be really respected. It can take your boat and you in the blink of an eye. Thanks for the vid. I'm gonna start cleaning!
Fascinating. I’m amazed you were able to keep it together on the trip back to Hawaii. I had a 1986 powerboat that had rot in the main stringer. You just are not aware of it until you have a problem because it’s all hidden under fiberglass. And once the wetness sets in, you may not know it for 10 to 20 years later. And its very hard to repair.
There's nothing of substance that ties the hulls to the deck bridge, the fiber glass tabbing is not wide/extensive enough and the stringers don't tie into the deck bridge. A bunch of people have suggested the dyneema rigging as causing the issue but that may have just exacerbated the design flaw. It also could the quality of the resin that was used during the build. You guys are just lucky to have the incident happen where and when it did. Really glad you guys are safe. Can't wait to see Zingaro II. Fair winds to you both.
Thanks for the post-mortem. We can learn a lot by seeing how the structure failed.
With you since before Kimmi, James. Since your first accident. Your content has grown and so have you! I’m enjoying your progress! It’s super exciting to see your Kickstarter campaign has doubled your target!?! 🤪 I bet you’re stoked with the support - just goes to show that people will always resonate with real people full of heart! Your channel is about to go huge - I’ve got a great feeling. You’re way more interesting than some of the bigger sailing couples (no offence to those guys). I bet you’re excited to ramp up another level! Keep it sexy, informative and dramatic my dude! 😎
That was an excellent comment👍
Glad you guys are ok. I'm missing I guess the new boat. Look8ng forward to new adventures and videos
When I told you to keep breaking shit I didn't expect you to go this far. I'm glad you and Kimmi are okay and will sail again. Congrats on the new boat but I will miss seeing Zingaro in her battle worn condition. All the best 1YC..
Pitched in a little to your kickstarter. I sincerely wish you all the best with your new adventure! Can't wait to see a tour of your new boat :) Safe travels!
Send me the shackles, James, LOL...unreal the power of water! Glad all ended safely for you guys...cheers!
Wow! Just wow! Neptune was smiling on you both.
I'm pretty sure you're right James, ...what you showed and talked about makes sense to me of what most likely happened. Fair winds always!
Sorry. It is amazing she brought to port. Good job. Can't wait to see the new boat.
She was rode hard an put away wet...one to many times be4 u!!! Love y'all an am glad you all survived....my house just burnt down Thursday nite an when trauma happens in the end ur just grateful to get out with ur life.....sending love an light to you 2❗🤘💪😊🌞⛵💯❗
The way i like
Great run down video James! I agree with others, just move on and get a different boat. I often wondered if zingaro was designed to be a blue water cruiser, She’s more of a racer/performance boat.. Stay Safe and just start over 😎🍻
My take on this is, everything that has a beginning will have an end inevitably. Except for one. Glad to see you guys are safe.
FYI... kudos to you for keeping it together at sea and bringing around to make this video
James thank you for “the destruction rundown”. I know it was heartbreaking for you and Kimmi. But, I am so thankful that you were able to make it as far as you did, safely. Will look forward to Zingara II, and more adventures. Sorry Kimmi must move on, she will be missed a lot. Much love, prayers, lots of well wishes! My opinion- Das Boot, - Ist Kaputz!
So happy you guys are safe and made it into the harbor in Hawaii !!! Because of the extensive damage, I gotta say I wouldn't take this boat if you gave it to me!! So glad you guys are getting something newer and should be much safer and comfortable!! Looking forward to following along on your coming adventures !!! Cheers!!!!
So glad u r both ok. All the best for another home! Cheers fro Australia 🇦🇺
Hey... Brilliant look through at the damage. Remembering the bow quartering seas, thumping into the forward sections of the starboard hull prior to the break. I see on the deck failure along the beam, forward area, and the failure along the starboard back of cabin deck beam. That I believe was as a result of impact to the forward starboard hull on that point of saling with the wind from the starboard side. The port hull would have been the solid grip in the water, amplifying the pressure wave through the hull... The main support beams would have snapped, most likely at the holes drilled into the beams. Subsequent to that, the torsion of the not rigid structure would have stressed the skin covering the load cells of nthe beams and plywood bulkhead overlap to beam sheet ply overlap. Just not strong enough in these conditions. Add to the break of the beams, with the breeze up at the time, the pressure from the rig would have amplified the distortion across the deck to finish off the damage to the level of catastrophic... Looking at the supporting beams and the method of attachment in cementing the hulls to that stress area, I'd say the cat was designed for coastal work, and not structurally engineered to handle the rigors of off shore work as you were doing. I would say the cat is salvageable for rig, deck gear and personal items and a bulldozer through the remains... Sorry... Built my first model sail boat aged 7, Just in the last 10 years, 3 more liveaboard yachts, including a James Wharram 30 footer, off shore cat... Now building a house boat out of a commercial barge, so I have a life time of experience in stress, build strength and observation on calamities... She's toast I m afraid ... on the up side, she got you both into harbour... that's a huge epitaph for the old girl...
After watching this, I am even more amazed that you were able to keep that thing afloat, much less get it to a yard. Quite a impressive bit of seamanship. While other “sailors” often abandon their boats for relatively minor reasons. You and Kimmi got the stuff!
Kimmi has got it going...good match..
So glad you two got out of that okay! It could have been so much worse. At least you’re back in the states and should be able to get any supplies you need relatively easily.
Zingaro was a great boat! She did really well for her age and size. But any boat can fail... New, old, wood, steel, GRP, design, engineering, maintenance, there's so many variables. We are happy you arrived safe! And we expect to see you soon in the water! Fair winds
Heartbreaking.
So sorry..
Holy Crap! You are a super hero keeping that boat afloat as as long you did.
I’m just glad you made it in safe👍👍
i hope to have you sailing soon guys.. best of lucks!!! big hug!!
Built light for speed, it didn't have enough strength or integrity to deal with the conditions it met.
Home built boats don't really have a lot of failsafes built in, when they reach their limit they fail catastrophically. Boats built in shipyards have a lot of careful planning to deal with stresses and rough conditions and cats need to be super stiff to retain their integrity.
It was already past it's best and you had been pushing it fairly hard, changing the rigging may have affected the tension on the hulls or it may have already been too late before you did that.
As others have said, strip out what you can sell and walk away, it requires too much structural work to be viable again.
Just watching this is stressing me out. So happy no one was hurt.
Whoever did the graphics on the Kickstarter page did an amazing job. I wish you guys the best for the future ❤️⛵️🗺
At least you’re broken down in Hawaii, with a pretty girl! It could be worse! You’re still doing better than most people 👍🏻
indeed!
Lucky guys not to had it sunk. Looking forward to see your next adventures on a new boat!
Damn that really sucks!!!!! Glad y'all made to shore safe..
Great video thanks for explaining it other Sailors will learn a lot from this and make their boats even safer
For sure shows what to look for in a wood boat before purchasing.
You guys are very lucky to have made it to Hawaii...holy crap!!
Congrats on the successful jury rig to get it and yourselves to land. It's nice to actually see the forensics. All too often the damaged boat is abandoned at sea. Thanks for taking us through that. It's Great info for boatbuilders. Apparently, the builders back then depended too heavily on plywood glues holding together for the long-term.
I Am Just Glad That You Are Both Ok
Oh my goodness, best of luck you you Zingaro!
I’m glad you guys weren’t harmed in the storm. I have to agree with other commentators, that cat is toast. Not worth much but maybe you can auction off all the good stuff. That’s very sad. You two made a lot of great memories on that ⛵️. Take care.
Just a shame for sure. Looking forward to the new boat. You guys stay safe.
Until our adventures cross, fair winds and full sails.
Jack and Billie
After seeing this damage we are glad that the two of you are safe and on to the new adventure. We were worried when you guys went silent, glad to have you back in our lives. Fair winds my friends! And good sailing with Zingaro II!
Couple of months somebody know what they are doing back in business thanks James for showing the damage
Firstly, I am glad you are both safe and sound. I am always amazed that the fiberglass boats have so much wood in them and that that wood, surrounded by the so called impermeable fiberglass, ends up rotting. My theory is that wooden boats are not as high maintenance as people fear and fiberglass boats are by no means the waterproof maintenance free structures they are purported to be. I hope your new boat is wood.
Cracked like an egg. I don’t see any possible way back for this boat. I wouldn’t get on it again
Stress crack due severe dynamic loading caused the failure. Stress crack occurs at every bulk head opening/hole, very similar to BOAC DeHavilland Comet plane window caused by metal fatigue (constant bending & debending). Literally, every hole has crack failure, on this video. Solution is smaller rounder hole/opening or reinforced the crack areas on both sides. Meaning both hulls need similar reinforcement to fix. IMHO dyneema rigging contributes 3% due to less forgiveness. Dynamic load = pounding storm waves.
Damn , that was one hell of a wave hit . Glad you guys are ok .
Glad you got to land safely. Happy trails. I think you meant Perth, Western Australia.
Praise the Lord you are both still alive!
I think it’s a combination of glue failure over time and maybe putting a lot of stress on the outer portion of the hulls pulling up from over tighten the dyneema rigging
I am so sad you lost her, and she will never sail again. RIP Zingaro you served well.
I have worked on alot of fiberglass boats. I believe most of them are made of Polyester resin and Glass Mat. It is the cheapest material available.
Polyester does not like to stick to wood. Epoxy is the best and more expensive.
Great video. Discontinuous load paths combined with weak and undersized and underbuilt.
Your quick thinking with putting the Dyneema around the hill trying to hold it together probably saved your lives. Lord knows your dinghy would not have kept you afloat..lol Good job CAPTAIN!
Been watching your channel since you bought the boat James. Sad to see her like this for sure.
However you guys seem to have a good plan going forward so respect to you and Kimmie and I hope to share an anchorage with you guys some time 😊✌️👍
Damn bud! you guys are lucky to have made it in! I lived on O'ahu for years and know how bad that sea can get between Maui and O'ahu. Pretty Knarly. You almos when wreck brahhh! Glad you guys are safe.
I see that your Kickstarter will be over subscribed. Do not use the overage above the downpayment to simply pay down the loan.
Put the excess funds in a dedicated interest bearing account to pay the boat mortgage payment and insurance. This will give you about a year of flexibility on your monthly loan payment -- you do not want to subject yourself to foreclosure if you have a short term cash flow problem. This is very important.
This is an early design, and was meant for sailing fast up and down the Australian coastline, I think the construction on this particular boat was a bit "lets get it done" rather than attention to all the finer details. The fact that it has lasted so long is a testament to the quality of the design. It was/is well past it's used by date, so has done well to get this far. It's time for a Viking burial. I actually can't remember the last time I've seen one of these in Aus, I think most of them have been retired long ago. I commend you on your choice for the next cat and I wish the two of you success in that endeavour . Cheers Rustie.
Hello James, Well that was a hell of a ride you guys had, happy you made it thru to eye of the storm. My dough fur hull trawler with 1 1/2 thick hulls would have been stressed to the breaking point in that storm but would probably been in better shape who knows, any way, good to have you both alive and still kinking for some more swimming and pulling your boat with ropes in your teeth......Cap from San Diego Ca.
I figured there would be a Zingaro II , James doesn't strike me as the white picket fence suburbs kinda guy.😂👍
My opinion is , thank god no one was hurt. It was a older boat, crap happens, nothing anyone can do . Time to move one. ❤️
Wow you guys are very lucky to made it to land. It looks like that boat could have just fell apart the rest of the way with one more big wave. Great think on your part James putting the rope all around the boat to hold it together. Glad you guys survived your boat accident . Good luck on your new boat purchase.
I am just glad Zingaro got you home. Boats have a lifespan regardless of what they are made of. Steel, wood, fiberglass, whatever. Zingaro was nearing the end of her lifespan before she failed.
Glad you both made it safe...
Hope your new adventure is everything your dreams are made of....but PLEASE do me a favour.....Cruise at a RELAXED pace.....All most all the good things in life are more enjoyable when your cruising along & smell the roses , so when you push/over stress rigs the loads are ENORMOUS & SHIT WILL SIMPLY BREAK
Remember , your going remote....ENJOY...cheers
Those main beams were really wimpy to begin with. They looked like 2x4s and they had 2 inch notches cut into them. They were basically 2x2s at the notches. Hope you're back on the water soon, on a strong boat.
I saw that too. Those two large bolts did not help. Looked to be built lightweight to be fast coastal cruiser. Not built for 25 foot waves in Hawaiian waters.
I would not attempt to repair that cat it's a goner.
All those sunk hurricane cats would be far cheaper to repair.
They are getting a different boat.
@@drx1xym154 They have no choice if they want to make it alive to their next sailing destination.
if you know the youtube story.... they got their money out of that boat. it went the distance for sure. thanks to James and his ingenuity. but its time to find that next home. cheers to Zingaro. From Upstate NY
She is done. Salvage what you can, sell what you don't need on the new boat and move forward. Safe sailing to the best couple sailing on RUclips.
You poor bastard. I feel so bad for you guys. I wish I could do something to help. Much love
"All ships are safe in a harbor, but that's not what ships are for." -proverb
Glad y'all are safe and sound. That's all that matters. This is just Poseidon telling you it's time for a new ship and a new adventure, one you can both share from the start. We'll all be sure to stay tuned. Fair winds...
I think there were a few amendments to the Crowther plans. Those doorways for example seem to be very narrow at the tops--I think someone cut part ot the top away to get easier passage through those portals.
I thought the same
Oh shit just saw this, won the soft shackle! Thanks James & Kimmi!!
Sweet congrats brother! Thanks for the support!
This is a great lesson for would-be boat designers and builders, as well as anyone else trying to assess a used boat. She really looks like she ought to be taken apart and put back together.
That's incredible you have raised 67k on your kickstarter! You must be stoked for sure.
Man the sound of that going all at once. Or at least taking that one last big wave finishing her off. That sound must’ve been horrifying!
that is some hard core sailing, bluewater stuff, on a plywaood boat not going to last, you did a great job keeping her afloat and the pacific crossing was just much for the boat.. if you stayed in the caribbean wh knows how much longer the boat would last,,,,,,, thanks for the explanation, glad you are safe...
This happened cause U were destined to be a sea legend on the high seas of RUclips 🤪😇
Jeeeez. I'm not a boat builder but i see some other weak points. That flexible deck saved your lives. Good to see you can smile again.
Glad you guys are alright, that's a lot of failure points! If Zingaro is going to get scrapped you might auction off the shark grin bows. 😁
thank god u guys are ok ,im no boat expert but from what I see I can see this boat was tired ,
u did good in getting her to do what she did for u , curious if u had insurance . what is the next boat and hopefully a much better boat that is put togeather with out multiple hands and thinking of cutting and splicing where there shouldn't be . I know cost is a huge factor and of course getting a cheap boat is a great idea , but deff some super thought in a sea worthy boat that will take the beatings of the ocean looking forward to seeing the new boat .
So lucky she somehow managed to get you both to safe harbor wow
that boats DONE! u got a lot out of it though. so glad ur alive 😎🤙🏴☠️
Thanks for sharing James. I was really looking forward to some objective findings. What really caught my attention is your statement that it did not sound like one small problem led to another and then another since you heard only one break or rather many breaks at the same time. Any idea WHY those two large bolts were there? Also at 5:13 that "beam" ending and then being re-routed around that hatch opening, what the hell? A beam is not a beam if it ends too soon.
Crazy she rotted from the inside out, glad ur safe