World's Tallest Mast S/Y Bayesian

[@chrischamberlaine4160]

The Bayesian disaster - in very simple terms for the layperson. This is a one in a million tragedy but we should examine the facts and learn from them. Bayesian boasts the second highest mast in the world at 75 metres on a length of 56m. She has a lifting keel to enable her to get into shallow areas. Fully down it gives a draft of 9.83m and raised a draft of 4m. A sailing yacht has a keel to counter the heeling moment generated by the power of her sail plan. I’m sorry to say that size matters to a superyacht owner and naval architects are seduced into providing solutions. As yacht size increases the resistance of the hull reduces in proportion, so less sail area is required to adequately power longer yachts. But these floating fashion items are driven by appearance and bragging rights - and you lose prestige if someone has a bigger mast than you. Always the status pecking order questions are - how big - how fast - what cost - and is it black? If you designed Bayesian with a reasonable sail area and a ‘normal’ mast she would not look impressiive - which is what superyachts have to be. The stability of a yacht has to be sufficient to counter the power of the rig but, as mast heights increase, the keels can often become so deep that the places of interest are restricted hence the lifting keel solution. Stability comes from two factors - the hull form and the ballast keel which acts like a pendulum. As the yacht heels the volume of the immersed hull section produce a buoyancy force which resists heeling. Initially the keel gives little force but as the angle of heel increases ‘physics’ makes the keel contribution significant (leverage). The greater the keel length, the greater the effect. The combination of the hull buoyancy on the heeled side and the keel on the ‘windward’ side produces the force necessary to keep the yacht from capsize. If the keel of Bayesian was retracted it would lose a significant six meters of moment arm or leverage from its probable 200 tons of keel bulb. When we design yachts we calculate the stability, or righting lever, as a function of heeled ‘bouyancy’ force and the ballast moment arm combined. (the GZ) This can be plotted on a graph to show the stability at any heel angle and identifies the angle at which stability becomes negative causing the yacht to capsize. Normally an ocean yacht will experience a negative point at about 120 degrees of heel. With a lifting keel this point is greatly reduced maybe to less than 90 degrees. If Bayesian was at anchor with the keel raised and no sail up the crew would have every confidence that she could remain safe in most normal wind conditions. Every captain at this level has passed an exam on stability and would be aware of his vessels stability graph. Many years ago I sat at Cremorne and watched a spiralling williwaw race across Sydney harbour and pass through Mosman. This twister was only about 30 metres wide but it destroyed houses and overturned cars in its path. A few feet away nothing was harmed. The power of a twister is intense and powerful with the wind is coming from every direction. This was what hit Bayesian. The problem of large rigs is windage, even with no sails. But this yacht had three furling sails forward and a big boom with the weight of a furled mainsail inside all above the centre of gravity. Also there were a few communication domes on the spreaders. We use a wind pressure coefficient to measure the force of the wind on the rig and sails. Even without sails the WPC for Bayesian must have been pretty large when hit by a wind force of varying direction with a local velocity way above the norm. Once she was knocked down beyond her stability limit with the keel up she stood no chance and, laying flat to the water, her deck openings would have allowed a flood of water aboard and she would founder. This would happen in a couple of minutes. The observation of a lightning strike can be discounted because these vessels are grounded and any damage from a strike would have caused a slow sinking at worst - not a capsize and founder. The individuals within a professional crew with sailing experience may have sensed the wind and motion of the vessel and quickly reacted to instinctively save themselves in the seconds they had. My guess is that some were already on deck alarmed by the general conditions.The guests would have found themselves totally disoriented in flooding cabins, in darkness with the walls, doors and passageways at ninety degrees to the norm. They had practically no chance because it would be completely beyond their experience. The crew would have been unable to be of any help due to the speed of the unexpected event. I have been a professional yacht designer and builder for fifty years specialising in lifting keel yachts. My son, a professional navigator, was Third Officer on a ketch superyacht with masts 100m tall; a yacht so big, at 88metres, that it was almost beyond human handling even with the machinery on board. But of course it is the biggest and most expensive’ etc etc. What we have here is a one off accident which is a wake up call to an industry where common sense has departed as yachts get more silly in size and design. In summary Bayesian was caught in the wrong place at the wrong time. A freak accident which the designers and crew would have little chance to predict. If the keel had been down she would have probably survived the knock down. But without sails up the crew would have experience of her basic stability for normal conditions which would have felt adequate. Any enquiry must examine the design factors such as the stability vanishing point in the condition she was at the time of the accident; keel up, tank loadings and rig factors for windage (WPC) and centre of gravity etc. And a calculation of the wind force required to heel the boat to 90 degrees in the condition at the time of the accident. All forms of transport have had these unpredictable one off events leading to changes of regulations and professional practice. Titanic, Boeing, 1955 Le Mans, the 1952 Farnborough crash, the 1979 Fastnet - all have made a difference and these events all came unpredicted and out of the blue often at a time of complacency. Chris Freer - yacht designer - August 2024

[@Samson518]

Great insight, thank you.

[@cannae216]

Don't know what a lot of this means, but I understand a little more than I did before, which was "big torque sink ship." Thx for the insight

[@private-private]

Great comment. Thank you for taking the time to write it. I suspect what happened is exactly as you said it did. Keel up, boat knocked down, water ingress through open hatches and port holes with a crew totally not expecting anything like the gusts of wind that came in and which could not have been expected as could not be forecasted. For those not used to the confines of a ship ( which this almost is) imagine your home suddenly been turned over in the middle of the night, all lighting lost and water pouring into your bedroom as you are suddenly woken up and you are trying to get your bearings.... and thats your house! God speed on their journey up to those who died.

[@AdeboFunkyVoodoo]

Fairly certain she was the only Perini Navi of this size which was sloop rigged. All of the other boats built on the same hull design were ketch rigged. Hence, she was the only one with such a large mast. Time will tell if the rig contributed to the disaster or if it is entirely unrelated. Personally, I profer no guesses or speculation. Important to note, the current owners didn't commission her.

[@sameeralwaelie2396]

Thank you for the elaborate details.

[@Maxillz]

Crazy to think that if it was upright, that mast would still reach over 20 meters out the water

[@KM-em9me]

Great point. I was under the impression that I had never seen a mast taller than the length of a yacht.

[@alexx4695]

Apparently, the Bayesian sunk in 30 metres of water. Its 72.3 metre mast and draft of 9.83m (keel down) would equate to 52.13 metres of mast protruding from the water if she sunk upright.

[@pimvanduijne]

even more because it would be miraculously balanced on it's keel somehow. so like 30m.

[@ash8128]

@@KM-em9me No, masts longer than length of the boat are very common. Just compare “length overall” with “air drought” / “mast height” of any sailboat. For example: Beneteau First 27 (8m vs 12m), Bavaria C57 (16m vs 24m).

[@KM-em9me]

@ash8128 That mast was 72 meters. It looked like it weighed at least 15 tons. If the mast assembly weighs half as much as a large excavator there's surely going to be a problem when it finds itself underneath the vessel at a 6 o'clock position.

[@jamestamu83]

That's a tremendous amount of over-turning moment! When it takes a massive dockside crane just to lift the mast, you have to wonder if the designers fully explained the risks to the owners.

[@bishopdredd5349]

Owners like to boast about their boat. Like having the tallest aluminium mast (and 2nd tallest overall).

[@hiwind58]

The builder said the boat is unsinkable

[@achitophel5852]

'Mines bigger than yours' would be enough.

[@peterphan227]

Don't worry, the designers said it's unsinkable. Where have we heard that before?

[@davidkendall1614]

Mother Nature: “Hold my beer”

[@Kodakcompactdisc]

Millennium dome?

[@panosdotnet]

Titanic 😊

[@zackmoore147]

Bayesian.

[@viarnay]

Unsinkable but not stupid proof...

[@stauffacher6638]

I saw the yacht in Gouvia Marina of Corfu late June. On sea we are all just sailors, RIP.

[@johnriesinger]

What a horrible tragedy. That sure a beautiful elegant and graceful lady. Now rest in her watery grave. Rest in peace. To the ones who couldn't make it out.

[@bojidarovich]

And just like that.. it's gone 🫤

[@robhappe2705]

The keel up, very bad weather and the tallest mast. A recepy for disaster apparently.

[@viarnay]

The Bayesian had a 542 Tons displacement I doubt the mast was the cause..

[@bradwells6781]

Keel should be up at anchor

[@JS-ti8ny]

“Keel should be up at anchor” Why? The purpose of the movable keel is simply to access and dock in swallow ports. Otherwise, the height and immense weight of the mast must be compensated for particularly when anchored in gusty open water. Now it’s believed that the keel created a vibration noise when lowered and the guest quarters could hear this vibration. The keel was supposedly raised to decrease this noise.

[@viarnay]

@@JS-ti8ny I find the vibration noise unbelievable for such a luxury sailyatch..

[@JS-ti8ny]

Viarny If you’ve been aboard a vessel, particularly an aluminium hulled one, vibration noise is normal to some degree especially while underway. This is nor a fixed keel it’s a massively weighted 30’ movable behemoth that is critical to the overall stability given the enormous height and weight of the mast itself. If you know anything about aluminium hulls, they are noisy, so the vibration claim is credible imo. Furthermore, why and how did the mother and baby seemingly get notified to come out onto the bridge/deck (which would ultimately be what saves their lives)…yet the remaining 10? Passengers did not come out from their state rooms ..remaining in the hull of the yacht. All in the middle of a storm the mother and child are notified to brave the weather but no one else is…? *Not even the owners* ….. ???

[@MichaelBeeckman]

I have an extra question after having sailed across the Atlantic on a sister-ship of Bayesian. I appreciate the explanation about stability and the position of the keel. My question is about the sunk guest cockpit. It is significantly lower than the deck, has a direct entry to the interior and on both sides (next to the steps leading from deck into the cockpit) air intakes to the engine room. We agree that if pushed over to a big angle she has enough righting moment, but what is the effect of this cockpit filling with water and the free surface effect that goes with it? Plus all the water getting directly inside?

[@Windof]

This is something you can say.

[@samaipata4756]

This video, definitely shows the way to richness for all lawyers going to sue the hell out of everybody involved with the refit of this boat! I’m looking forward to a smart KZbinr following up on those future court cases, tons of subscribers are guaranteed! My heart goes out to all the innocent victims of this tragic sinking!

[@gha9543]

Truly reminds me of the giant cruise ship Costa Concordia. 32 passengers died and many others were injured when the cruise ship crashed into the shallow reefs .Many passengers were injured and killed in the panic. First maiden voyage and sank a few miles out from the port .Captain was the first off the ship while the thousands of passengers were still trapped on board the vessel. This is 100% human error and caused the vessel to crash and sank.

[@pmpatrick48]

I studied the book "Seaworthiness-The Forgotten Factor" by C.A. Marchaj a few decades ago in the wake of the 79 Fastnet. But as mankind continues putting to sea in all forms of craft, we sometimes tend to venture from the known physics of stability, with tragic and sad consequence. Yes, let us examine and learn from this.

[@michaelbrownlee9497]

In the fastnet 79, there was another book written by John Rose a something. Good sailor. Won by Ted Rogers.

[@pmpatrick48]

@@michaelbrownlee9497 I believe you are referring to John Rousmaniere who wrote "Fastnet Force 10". Yes, good book also!

[@MariaM-up2he]

Exactly and they called that innovation!

[@istnugoed]

Read the book by mr Marchaj. A revelation !

[@michaelbrownlee9497]

@@pmpatrick48 yeah that was it, he use to do KZbin videos as well. Really knowledgeable individual, the one vessel where they left the guy on it, with his dying friend, and eventually getting rescued by a helicopter.

[@MrTrapper28]

A different designed sloop rigged superyacht called Kokomo at 58m has a mast of 82m. Designed by Ed Dubois and built by Alloy Yachts. I wonder what her righting angle is?

[@Dggb2345]

Those fittings are massive.

[@annettecahalan4268]

Such a true tragedy. So many people around the world 🌎 feeling it. Prayers for the family ❤️

[@capoukaverne]

most of the time for these big size boats a carbon mast is the best choice

[@achitophel5852]

other hulls to this design all have two masts, for a good reason.

[@fraserhardmetal7143]

A very sad time for all concerned , who considered that a mast of that size would be considered seaworthy when coupled with a lifting keel, when the keel is not deployed to its full extent - where's the fail safe in this arrangement ? The captain would normally assess the prevailing weather forecast and rig accordingly - his systems would have shown earlier storm conditions in the Balearics and should have battened down accordingly - mooring the yacht to land and moving the guests onshore - none of these normal precautions seems to have been done. If the yacht was kept on station then it would have been prudent to face the yacht toward the weather system, lower the keel and secure all hatches and lights and prepare the guests , if still on board , to prepare for the worst. The time of the storm was probably the worst it could have been , people in deep sleep , not aware of any danger and completely unprepared. The captain needs to reflect on his actions - a very sad day - condolences to all.

[@checkeredflagfilms]

absolutely true. however, large amounts of money elicits a large degree of false security and complacency

[@fraserhardmetal7143]

@@checkeredflagfilms no pockets in shrouds - yet another fine English mind gone.

[@schadenfreude1519]

Dunning-Kruger in full effect with this one. 😂 "it would have been prudent to face the yacht toward the weather system" -- Maybe somebody should come up with some sort of automatic device that could do this. Like something heavy the crew could drop overboard from the bow with a chain attached so the vessel would automatically swing to face the wind whatever direction it's coming from. This sounds like a huge opportunity. You should totally get on it.

[@stewatparkpark2933]

I'm sure the captain would have done all this if he new he was going to experience a 1 in a 100 year event .

[@neiltitmus9744]

How are you going to do that when the wind is in all directions at once?

[@Schoolie_G]

RIP to all. Thanks to the brave souls that deployed the safety equipment for those above deck. My guess is that the shrouds were so strong that they tore the hull apart with the intense force on the upper section of the enormously large mast. Like a strong lever pulling against a rigid surface. The stays as well. Think of the potential bend and whipping actions that could have been happening at the top of the mast and the newtons of force that would exert on the hull. If well attached with strong lines, the hull would deal with the force instead of a breakaway. This all assumes the mast doesn’t shear and either bends or stays rigid.

[@profiskipinternational4402]

Divers reported that the hull is in tact, and lays on the seabed turned 90 degrees. We have to wait till the sea report will be published. UK has already sent 4 specialists and inspectors for such sea accidents. We will learn what happened. Its beyond and imagination. A colleague of mine, Captain Karsten on the Schooner Sir Baden Powell was anchoring in direct neighbourhood. Karsten used the engine in this short storm to stabilize the ship and not to hit with the Bayesian. And in a sudden the superyacht behind Baden Bowell was gone. Karten noticed a red flair (emergency signal), took the RIB and picked up 15 people from a life raft, 4 had been injured, 3 of them badly. He took them on board of Schooner Baden Powell, informed the coast guard and the people then were overtaken to land. Divers already have seen dead bodies through the windows from outside. So it seems they had been trapped.

[@Schoolie_G]

Thanks for the great intel. This is one for the record books. Such a ship so quickly lost will certainly help in future designs and safety protocols . With an intact hull at 90 degrees, lots of questions that need to be answered. Such a grim recovery. Respects to those lost and the salvors.

[@aproudamerican2692]

Was such a tall and heavy mask wouldn't that make the boat unstable in rough Seas? Let's wait an see if this had anything to do with the Tragedy and losecof 7.

[@FrankC76]

All of the sailboat experts are weighing in on the design, as if a boat never sank in a storm before. Considering the age of this video and it is about an 8 year refit, it sailed for at least 16 years. Probably more.

[@profiskipinternational4402]

yachts of that quality - in good hands - are completely renewed every 10 years roughly by regular maintenance and refits. E.g. salt water and UV (ultra violet light) are highly aggressive, and destroy every kind of material, even stainless steel. So standing rigging regularly every 10 years, re-painting with sand blasting of hull same. As these ships run with professional crews and charter guests, they underlie strict rules, e.g. annual inspection of fire fighting systems, all radio broadcasting units, safety equipment (epirb, life vests, life rafts), mast inspection every 2 years (latest) beside regular/seasonal inspections, every five years renewing of mast and hull certifications (inclusive ultra sonic inspection of hull plates) ... such ships so to say, don't become old ... maintenance costs plus refit in a time period of 10 years = equivalent of ship value. So if such an owner buys a superyacht for 10 million USD, another 10 million will be spent in next 10 years. Thats very standard. As the mast didn't snap, divers reported an intact one, the yacht lays now on the seabed 90 degrees turned, I fear that the big windows and glass doors between deck and saloon broke when the ship was pressed with more than 90 degree heeling angle onto the water surface (so witnessed by my colleague captain Karsten owner of Dutch schooner Sir Baden Powell who anchored beside at the night), and the ship was flooded too quickly. We will learn soon from the salvage and sea accident report.

[@chrischamberlaine4160]

Wind conditions rarely capsize yachts of normal design parameters because, as the yacht heels, the wind spills and the righting effect of the keel increases. Waves are the normal cause of knock down. One problem of large rigs is windage, even with no sails. A 20mph wind gives 1lb per sq foot. In a fresh gale at 40mph the wind pressure is 4.1 lb sqft . In a moderate twister of 100mph the wind pressure is 25.6 lbs sqft . This was the sort of event that hit Bayesian. In their write up about the yacht Peri Navi wrote - “To optimise sailing performance of the powerful Cutter Rig sail plan, Salute has modified keel and rudder lines to improve her stability in keeping with the higher centre of gravity the tall mast produces.” Chris Freer

[@clarkridlen1966]

It looked like the perfect recipe for disaster. A sudden storm carrying high seas. The ship anchored with the keel up and doors open. I peaked outside a Navy frigate once while underway sailing in the North Atlantic in pre-hurricane conditions. I had to look almost straight up to see the sky. Just then a wall of water crashed into the door that I was looking out closing it with such force that the hatch door hit my head giving me a concussion and breaking my glasses. No man can withstand the shear power of the sea.

[@blueocean2510]

​@@profiskipinternational4402 Italian & EU waters, the report will not be made available. New regulations will be put in place. EU register & EU crew who speak European languages other than English, it will allow the crew communicate with authority ashore. Non EU crews will no longer be able to work in EU waters, for safety and security.

[@profiskipinternational4402]

@@blueocean2510 Do you have a link about the new manning rules ? I know that Spain had limited heavily the option for foreigners (even within EU) to work on Spanish flagged ships.

[@tommygola]

So very sad for this magnificent vessel and all who perished on her. Just unfathomable. RIP

[@ciararespect4296]

Plenty of fathoms I'd say?

[@tommarkhaley]

@@ciararespect4296 too soon man, too soon

[@ciararespect4296]

@@tommarkhaley not really. I was answering Tommy talking about magnificent vessels He'll never have it nor me nor you ? So if someone drowned in a canoe that wouldn't matter? Only rich get sympathy? Sympathy for the employees

[@tommarkhaley]

@ciararespect4296 you're a f*cking idiot love. Of course it would matter if someone drowned in a canoe. You're a wealth hating fool clearly.

[@tommarkhaley]

@ciararespect4296 you're joke was distasteful and that's all there is to it.

[@plutoniusis]

Wonder if so tall mast contributed to imbalance of the sailing ship , to handle such size of mast in a rough sea condition is a serious challenge for ballast's, the mast to body of the ship ratio?

[@profiskipinternational4402]

It is not. Dont worry if you want step on board of a sailing yacht. So long it is not a DIY project, any naval architect and ship yard do stability calculations. Any sailing yacht/ship is built nowadays to have at least 110-115 heeling angle with a righting moment. In other words. Even if the yacht is pressed flat onto the water = 90 degrees heeling angle, it will righten itself by the counter momentum of the keel ballast. Such ocean going ships have bulk heads = water tight compartments. Its impossible that such a hull runs full of water in seconds and the rightening moment is gone. Such big yachts have professional crews on board, with regulated safety procedures (e.g. closing the bulk heads), checking steadily the emergency pumps, having emergency generators on board in case regular electricity (e.g. power grid on land or 24V battery bank) is gone. Something extra ordinary must have happened, that this big super yacht did sink in a moment. We have to wait, till the inspection team will publish the sea accident report. Then we can learn from. R.I.P. all lost souls. My condolences go to families, friends and all colleagues.

[@jlp2011]

Yeah, yeah, yeah... Much certainty from you. Yet, something did go badly, despite all your reassurances, as she’s down now. Maybe it was unavoidable, maybe not.

[@ciararespect4296]

​Safety procedures. Professionals don't worry bla bla bla 😂

[@profiskipinternational4402]

@@ciararespect4296 being steadily worried as a professional is generally a bad advice. Being a pilot, captain of sea, a surgeon ... not everybody is made for such jobs. It needs the right mental attitude towards risk. Professionals are highly trained, and steadily get re-trained to sharpen their senses. The job on the bridge is not for "land rats", who miss at all the senses which are required to deal with such risks. We are very aware of them. Same as an astronaut is aware, that he might never come back when the rocket engines get ignited. There are always risks, but we sailors love the sea, and we have learnt to handle these risks. And we do all for the safetyness of crew, the ship and participants in sea traffic, that all come back home safely. I think you take higher risks, when you sit in your car and drive onto the autobahn. Just imagine, if you drive from A to B over 400-500 km. How many cars and trucks you pass. How often you depend on the right decision of such traffic participants. Thats real risk, as you don't have any influence. My uncle, an excellent motor biker (he was also professional bike mechanic) was killed by a drunken car driver. Such risks are much higher than doing a job on a ship, as we can calculate the risks and minimize the risks to a level we still can handle it. We have worldwide around 3,000 ship accidents per year. While approximately 1.19 million people die each year in road traffic accidents, official study by the WHO of 2023. So tell me which life is of higher risk: That of a well trained sailor on sea ships which require annually a fully inspection ? Or your land life ? Yes, we professionals don't worry. Otherwise we should not do such kind of jobs. We have respect, and in the right moment fear gives us the warning (in time) to make precautious decisions. But this is not being worried like grandma who is waiting at home for her cat not coming back at the same time.

[@nonegone7170]

@@profiskipinternational4402 Engineers are never wrong of course!

[@marsjel1962]

In Nederland noemen we dit “pikkie vergelijken”. Wie heeft de grootste? En we zien waar het is geëindigd.

[@Coordinator61]

And now a submarine.

[@chrischamberlaine4160]

One problem of large rigs is windage, even with no sails. A 20mph wind gives 1lb per sq foot. In a fresh gale at 40mph the wind pressure is 4.1 lb sqft . In a moderate twister of 100mph the wind pressure is 25.6 lbs sqft . This was the sort of event that hit Bayesian. In their write up about the yacht Peri Navi wrote - “To optimise sailing performance of the powerful Cutter Rig sail plan, Salute has modified keel and rudder lines to improve her stability in keeping with the higher centre of gravity the tall mast produces.”

[@cyberla]

Yeah, that looks like a good idea! The mast even looks easy to tip over 😳

[@drugofanation]

I really hope there’s a thorough investigation into this tragedy… if you watched the video you would’ve learned there would have been considerable time pressure to step the mast. Anyway, have to wait and see. So sad.😞

[@profiskipinternational4402]

you dont inspect such mast only every 10 years. The re-rigging was 8 years ago. Regularly you do a regular inspection every 2 years, and a fully inspection every 5 years with laying the mast.

[@paolotubo74]

It Was simply a tragedy. They were at sea at night and could not have imagined that this small hurricane would pass by. Moreover, they had dropped anchor, so the boat couldn't move freely, and the weight of the 75 meter mast caused it capsize.

[@profiskipinternational4402]

@@paolotubo74 such superyachts have weather radar. Regularly not the whole crew sleeps at night. There is so called anchor watch, as it always can happen, that the anchor starts slipping. Its not a hobby yacht. This is a "ship" with commercial crew = professional standards. E.g. work shifts and manning follow strict rules. So the question is: Why has the anchor watch not noticed the approach of such weather front ? Regularly there are different signals, e.g. watching the air pressure runs 24hours with a barometer. During an anchor watch, normally the watch officer makes notices (e.g. every hour) in the log book to confirm, that he / she has checked every single details (e.g. ship position / GPS). - On such yachts all is electronically tracked. We have to wait till the sea accident report will be published to understand this tragedy. It wont help the 6 souls anymore. R.I.P. My condolences go to the family, friends and colleagues.

[@profiskipinternational4402]

It will be. International Maritime law forces because of the loss of lives the institutions (e.g. coast guard, national maritime authorities) to investigate. We will see in some months or eventually later (it can take up to 1.5 years till a fully and detailed report has been published) a sea accident report. It will then be published on the official websites. In Italy its also regulated by Italian Code of Navigation and by article 578 of this code there is even the duty to collect all data and to preserve the evidence for future further investigations. The rules by articles 578 to 584 of the Italian Code of Navigation clearly state, citiatoin: "When a crewmember is injured, either on board or ashore, and the injury causes his death or his temporary work inability for more than 30 days, a special inquiry is carried out by the Local Maritime Authority or by the Consular Authority with the assistance of a member of the Labour Inspectorate." (source: siccardibregante.it/ ). Responsible in Italy will be the General Directorate for Railway and Maritime Accident Investigation in Rome ( www.mit.gov.it/ ).

[@MrMarko4]

But...what are the chances of his business partner being run over and killed on the same day ...

[@StanJones-ww8th]

What an amazing piece of engineering (referring of course to the mast). Seeing a closeup really emphasizes the dimensions. The modern materials version of the former wooden masts from the past. WOW

[@DarrenPhillips001]

Hate these documentaries. No facts just daft camera angles & people explaining their emotions while working. Crap

[@klapsigaarenbasgitaar1931]

It’s a promotional vid.

[@davidanderson3684]

It's more of a recreational yacht, but it's still falls back to the captain who is responsible for safety and security for its passengers and crew!

[@lonnyhollywood]

What is the captain in this video? The captain at the time?

[@janstolk486]

World's fastest sinking ship !

[@perarduaadastra873]

Profoundest prayers. 🙏

[@angela1984a]

And how is that working out for you?

[@CarlosAlberto-ii1li]

Fanatic, you think it makes you look better posting that, you offend many.

[@OutofDarkness_jik]

@@CarlosAlberto-ii1li The Word of God does offend many, because it is the Truth. Those in darkness are blind and cannot stand the light until they are so desperate they end up wanting to know if Jesus can save even them, which, of course, he can and does.... but only on the basis of the person making a decision to receive him as Lord. Those who blaspheme God, the Holy Spirit and swear offend many of us. So, lots of offense to go around. 2 Corinthians chapter 4 verse 4 : For the god [Satan] of this world has blinded the unbelievers’ minds [that they should not discern the truth], preventing them from seeing the illuminating light of the Gospel of the glory of Christ (the Messiah), Who is the Image and Likeness of God.

[@OutofDarkness_jik]

@@angela1984a God is not an ATM machine. Prayers made outside of a relationship with Christ will not often receive a response unless they are from a soul crying out for help....by the person's own free will choice to engage with its creator. Thus, the common belief by those yet to know Christ that prayer does not work out. The Lord, out of the abundance of his grace may answer a prayer here or there even if the person continues to reject him, because he is desperate to reach them, in the hope that the person will one day have a change of heart. We all deserve nothing less than hell, which is the course we set for ourselves when we obeyed Satan instead of God way back in the garden of eden. Undeservingly, Jesus came to die for you and your sins, to make a way to rescue you. But you cannot be forced, and God respects man's free will choice. Make yours. 2 Corinthians chapter 4 verse 4 : For the god [Satan] of this world has blinded the unbelievers’ minds [that they should not discern the truth], preventing them from seeing the illuminating light of the Gospel of the glory of Christ (the Messiah), Who is the Image and Likeness of God.

[@elisabethschwartz160]

According to the Italian divers the Mast still intact! But so far not a word about the keel!

[@viarnay]

Sheet can happen but this is an obvious crew negligence...

[@tomnguyen9931]

They say the keel was almost all the way up.

[@SVPearler]

​@viarnay at anchor procedure was to have keel up. Plenty of info out there now.

[@viarnay]

@@SVPearler Only at shallow harbours bruh..the Keel is meant to be always down..

[@SVPearler]

@viarnay mmm no. Only under sail. Check eSysman who has the info from the past captain and crew members.

[@giuseppelombardo2266]

Ottimo lavoro, peccato che la nave è affondata, avete fatto qualche cavolata?

[@FKTHESYSTEM063]

Can’t see how a Mast manipulates buoyancy that much.

[@notsecure]

too tall, maybe?

[@ZZZzzzap12]

Too soon, certainly.

[@adelaferreira4575]

Crazy height for sure

[@bryanrowell4793]

A bit. Packed full of sail. Really strange incident. SwingKeel. Ballast. ? It’s sad.

[@alastairjhunter3666]

And too heavy

[@ianmoone2359]

And here we are after the worlds tallest aluminium mast, combined with a swing keel, which when lifted decreases stability, caused the Yacht to capsize & the owner and his daughter, 4 guests and the chef to all drown. So as you can see from this video, it’s not the original mast - it’s been lengthened during a refit. Everything you do on a vessel affects standard incline stability - as originally designed. It turns out when she sank while at anchor with sails furled that the keel not fully extended that wind pressure alone on the mast from the water spout / tornado that hit the vessel while at anchor, - was enough to exceed the GZ righting curve & she capsized & sank in 16 minutes killing 6 or 7 owners & guests & the one crew member (chef). People with too much money just love to feck with original designed to go taller, faster, more sail area etc, but was all the relevant stability recalculated for the worlds tallest aluminium mast with the swing keel raised in a force 12 Beaufort Scale adverse weather event? Apparently not. Those in the video are all far too cavalier about their record breaking achievements it would appear with the benefit of hindsight, and now 3 of the crew who survived are under investigation - for criminal manslaughter charges. Not so feckin cavalier now I’ll bet. What about the ships designer, the refit company etc, they all ought be equally culpable if their re-rigging lead to the vessel instability that lead to its sinking & loss of lives. The vessels master is qualified in vessel stability, & must bear the brunt of responsibility if the keel was swung up reducing standard incline stability at rest (ie block waterline stability), -at anchor - when there was no need at the time since they weren’t about to enter any shallow harbour or marina where draft might have been an issue. The vessel stability book on board clearly shows the GZ righting curve and allowable loadings. The swing keel below vessel metacentric height has an immense affect on the GZ righting lever to resist / recover from a knockdown event. If the vessel wasn’t water tight with tender & or lazzarette hatches open for use of the tender with forecast approaching bad weather again, master of vessel responsible for “battening the hatches & splicing the main brace” (ensuring water tight integrity ahead of time. Wait until the vessel is salvaged and let’s see exactly what state the vessel was in when it sunk & then it will be much easier to apportion blame to the master, designer, the rigging refit etc. There will be more than enough blame to go around no doubt.

[@SteamCrane]

This didn't age well.

[@CharlieWindsor-c2j]

As an educated guess to include causal factors... There is no mystery. The lateral external force (wind force and wave drift force) overturned the vessel Hull beyond its angle of vanishing stability/downflooding angle pushing its righting arm from positive to negative with the keel raise the opposing resistance to overturning the hull stood no chance. At this point the Hull will have violently rotated i.e. pulling the Hull from upright to beyond 90 degrees position. Watertight openings may have been left opening, hence the foundering. The huge mast may have never been subjected to modelled wind forces for tornado strength winds. Certainly for hurricane force winds possibly to a 100 year return period, but not Water Spout force. As always will be chain of events, including human error.

[@bongocharm1332]

And there it is. “The rig is a little unstable but…”

[@markdavis2475]

Just a comment about the PPE. Why do some people have it, hiviz, hard hats , and others don't?

[@bandido7994]

Too tall and heavy, how much weight those antennas add to the top?

[@BjorckBengt]

Not much but they are high up and catch wind. The weight of the sail inside the mast is considerable though.

[@keithmillard2527]

Didn't watch the video because the title is incorrect. The tallest mast is mounted on a well-known super yacht named Mirabella V (or M5). M5's single carbon fiber mast is 290 feet tall. Bayesian's single aluminum mast is/was 236 feet tall.

[@frawin9595]

an engineering masterpiece,.. but was it wrong ?

[@randybell5461]

This was an engineering masterpiece for a fool.

[@heidiholiday1879]

As soon as I saw mast months ago I said only a matter of time.

[@boredstrayingtheinternet2557]

2:35 "tallest mast in the world, a little unstable...". Well...

[@FrankC76]

Yeah he was talking about refitting of the mast. This is a video about a refit.

[@LerwickH]

@@FrankC76refit or not it’s still the tallest mast, and would have a lot of flex.

[@Toob41]

@@boredstrayingtheinternet2557 He was talking about the 70m aluminium tube when being handled without the rigging to support it, not the yacht.

[@JohannesFabender]

Tall, taller, deadly.

[@tomnguyen9931]

The boat took a direct hit and it would be hard for it not to sink

[@markbass7145]

The video description says 75m, the guy in the video says 73m, Wikipedia says 72m... which is it?

[@Dreamhelmet]

Too big!

[@CRISTO359]

It is 70 m

[@julieemily1719]

Ok me again and I googled keel and can be retracted! But also read. That a retractable keel can be very dangerous if weather conditions become very dangerous! Always a learning day for me. But I can’t believe the gentleman had said it was a 2 week notice for this to be built and it was a rushed project 😮

[@mikeh2520]

@3:50, I know it's not but it sure looks like a little guy tied off to a halyard and hanging on by only his arms.

[@michaelbrownlee9497]

Must of been a good time for the mike lynch fella to go out day sailing with 10 crew on that beauty.

[@gabriellevanneste5978]

‘Unstable’ fatal word

[@Outdoorshuntingshooting]

that aged well.

[@AdeboFunkyVoodoo]

@@Outdoorshuntingshooting given that nothing is known (at the time of writing) about why she sank, how has this not aged well?

[@twisterwiper]

The dimensions of that rig 🤯 No wonder it was catastrophic when that huge mast snapped. Must have been enormous forces at work. Edit: The initial reports of the mast snapping, seem to be incorrect.

[@profiskipinternational4402]

this is not relevant. Any "healthy yacht construction" calculates a maximum heeling angle of around 110 degrees = more than 90 degrees. So a yacht can be thrown to the side, and even 15-20 degrees more, and still she has a righting moment by the keel ballast. A yacht will turn back to its regular floating status. Its a safety aspect, that yachts are being built with such safety parameters. Even with a snapped mast, the righting moment increases, as the momentum by the keel ballast increases against the smaller weight of the rig.

[@perarduaadastra873]

Was safety compromised by the elegant design rendering an excess of glass windows breaking, and or by open hatches for ventilation, when the direct hit by the waterspout induced a “knock down” at anchor? The YouYube video clip narrative says, “It’s a 73 metre mast, it’s a little unstable”. This is out of context for the sinking? Tragic. Heartbreaking loss. ​@@profiskipinternational4402

[@twisterwiper]

@@profiskipinternational4402 Yes, I know. I’m a yacht owner myself, but the point is this was the largest aluminum mast in the world, weighing several tons most likely. It would wreak havoc on the hull when it came down from a great height.

[@profiskipinternational4402]

@@twisterwiper if a mast snaps, yes, there is lots of debris, yet there are always counter forces, e.g. stays, backstage, shrouds, sails ... its not that in a sudden 500 kilograms fall from 70 meters ... we can keep speculating, it wont lead us to something concrete. We have to wait till the report is being published. I suppose as the yacht is already grounded at only 50 meters water depts, that a salvage will start, as soon divers have recovered the dead bodies inside the hull. So far that is possible and not risking the life of the divers. The wife of the owner was on board (and survived). As billionaire the hubby was, there will be enough financial reserves to initiate this salvage, so far the insurance wont pay. Lets see. As you know as yacht owner, we only can learn from such dramas and accidents, to avoid similar incidents for the future and make seafarer's and guests life safer.

[@davidbrumbaugh3950]

A recipe for chaos...no way that boat should have been configured with that mast regardless of the modeling, which does not always track with reality.

[@rickkwitkoski1976]

Why a single mast rig? Why not 2 or even 3 masts, all much shorter than 75m

[@kristine8338]

“De zee neemt wat je aan de zee toevertrouwd.” Adagium van verzekeringsmaatschappij Lloyd’s of London.

[@CharlesWhite-j4f]

The most absurd boat on the planet. What a shame Mr Lynch didn't buy a sensible boat for just £10 million, a proper sailing boat, maybe an old-fashioned schooner, which his guests could have had fun actually sailing, hauling sheets, turning winches and feeling the salt-water in their faces. Instead of supposedly playing chess on an air-conditioned gin-palace leaning at 20 degrees. How does that work? Was it a magnetic chess board? How can you sit comfortably on sofas in a state room when the boat is under sail and leaning at 20 degrees? It was neither a proper sailing boat nor a proper gin palace, just a childish phallic symbol. The man seems like a fool to have spent his money on such a dangerous monstrosity, and a negligent host to have invited innocent people on board his death trap. Never accept an invitation to go sailing with someone who knows nothing about sailing. He's making the important decisions, not the skilled captain.

[@7_5101]

You nailed it. This ship is money for nothing. Those very rich people have become victim of their own vanity.. So what. Sorry for the chef. Even if it's inside the regulations it's easy to know a Motorboat having 75m Mast make it looking like a sailship is dangerous at sea at any time. I think if the captain had told his boss and party people to prepare at midnight he's getting fired soon.

[@hiwind58]

Billionaires d$ck measuring contest.

[@markbailey6051]

Realize with a Tornado all bets are off. No one is to blame. Hopefully the Captain ordered all of the openings to be secured before the storm.

[@julianmorris9951]

Does a mast on a boat that size need to be so tall?, if so why?

[@digitaurus]

(i) No. (ii) Because somebody thought having the world's tallest aluminium mast was cool. As opposed to stupid. IMHO, anything over 60ft should be a ketch or schooner rig

[@jsmcguireIII]

The hubris of engineers always gets spun into some kind of heroism. LOL

[@nwmi493]

you know you're big when you have two 5' open arrays suspended on gimbals under your spreader

[@johngardner4379]

This tall heavy mast plus a retracted keel equals a death-trap. Add in all the decadant statues and polished wood from the luxory refit and there you have it.

[@nicktw8688]

Now a fish habitat.

[@santamulligan676]

Albin vega27 for me

[@Paddy3881]

So will the captain be held responsible?

[@Andy_M986]

I love Parma ,great place.

[@ciararespect4296]

Hams nice

[@CarlosAlberto-ii1li]

​@@ciararespect4296and the cheese

[@TOPDadAlpha]

Now in 2024 more experts blame the mast for the sinking. Where the mast meets the deck there are large vent holes or slots. Center board was up, yacht flipped and the mast filled with water. The mast was NOT carbon fiber... It was a metal which weighted tons on tons.....i forgot the exact weight. So the mast being very heavy, full of water: the yacht would never right itself. Such a tragedy.

[@seonar]

Why did the cctv show the mast lights going out while it was still upright?

[@BjorckBengt]

They didn't. The weather conditions worsened and the lights not visible any longer.

[@seonar]

@@BjorckBengt Mike Lynch's wife also was said to have stated that the lights went out before the sinking and there was lots of shattering glass.

[@capitan280]

I believe that guard personnel on board did not know the instruments to prevent storms

[@andreleers9457]

The vessel lays fully intact including the mast still rigged to the hull at a depth of 50 meters. R.I.P.

[@Gippi-x4r]

Osservazioni molto pertinenti! Ma se con onde e vento forte perdi l’ ancoraggio e la barca si mette di traverso ed hai un varco aperto a soli 60 cm dall’acqua, affondava anche con 30 metri di albero o senza albero.

[@joewhelan5018]

Is it phallic?

[@robertkreamer7522]

Keel fully deployed and this probably does not happen . She may have gotten heeled to beam ends at close to 90 degrees but she would with that full keel in counterbalance mode have righted herself. The mast design however was way too high . Much safer would have been two masts of say 100 foot each . Yes more windage but much smaller boom . The boom massive crosssection and weight kept high off the deck for crew safety presented a very dangerous center of gravity moment that definitely was keel up disaster in a knock down . Weight up high whether in a power boat or sail is very destabilizing. And must be countered by ballast that Cannot be optional ! As a 79 year old sea dog i have sailed my share of tender sailboats and they may be extremely exhilarating on a race course but they will pucker you up in a hard blow .

[@12345fowler]

Have you seen the whole right moment calculation ? I am sure the boat architects have done it correctly and according to standard in use. But of course it is relevant only if the keel is down. If the keel was up, then this is the only reason that boat sank, and it is an unforgivable mistake

[@robertkreamer7522]

@@12345fowler I agree all the Captain had to do was push the hydraulic button to lower the queue while the crew is running around, picking up the cushions in all the nice things he should have lowered the keel then run through the ship and closed all watertight doors and made sure that the transom was closed and focused on ship hull integrity.

[@theosphilusthistler712]

This is nonsense. If a boat can't safely anchor with the keel raised that's a design fail. The whole point of the swing keel is to be able to do that, safely. It's not a trailer sailer. I think you'll find most of the ballast is in the stub keel, just as it is for many boats that don't have any kind of swing keel. The swing keel will have some additional ballast, but mostly it will be for extra lift when sailing upwind with a bit less heeling. The obvious design problem with this boat is that it wasn't watertight. The designers obviously didn't anticipate it ever being knocked on its beam ends. Once water starts coming in the righting calculations go out the window, and there were plenty of ways for water to flow in.

[@robertkreamer7522]

@@theosphilusthistler712 missing the point altogether. This is not a design failure at all in these circumstances with a wind velocity and a violent storm on its way probably topping out at 75 or more miles per hour. The Safe procedure is to lower the key, particularly if you have enough depth to do so . This was in unusual circumstance something no vessel is ever designed for it. Could’ve been a downdraft or a microburst can reach tornatic Strength . Microburst has in the past pushed extremely large aircraft right into the ground as they were flying on approach or taking off. . Your best chance in dealing with extremely violent weather is to become as stable as possible. The design of this boat was that she could withstand a healing motion of something like 70° up and 90° so you go for the greater number. It’s simple as that, it’s not nonsense, I take it. You are not a captain.

[@theosphilusthistler712]

@@robertkreamer7522 The Italian airforce has confirmed that there was a downburst. They also confirmed that there was no way to have predicted it. There were strong winds predicted. That is not reason to lower the keel, and hadn't been in such circumstances for the ...17? years the vessel was afloat. Furthermore lowering the keel would have had negligible effect on righting moment, but increased lateral resistance meaning a faster initial heel when the wind hit as well as reducing the vessels ability to maneouvre if they needed to get underway. Downbursts and tornadoes can't be forecast (except maybe for Texas?). In following this I found footage of one just a couple of miles from where I'm presently moored which flipped a 60 foot catamaran and knocked the 45 metre Dubois superyact _Encore_ to 90 degrees. Encore has a stub keel and draft of 4.3 metres compared to the stub draft of 4.5 metres of _Bayesian_. She does not have a centreboard (ie swing "keel"). She was knocked down in exactly the same way as _Bayesian_ but unlike _Bayesian_ is properly designed and built with a watertight deck and superstructure and popped upright as soon as the wind passed. This knockdown is something that could have happened to _Bayesian_ anywhere, anytime, moored or underway and the result would have been the same. She looked like an ocean-going yacht but in reality was an open boat. 100% design failure. No, I'll be generous. 99% design failure. 1% crew and guests not maintaining an obsessive habit of closing watertight doors, maybe.

[@julieemily1719]

Let me ask, a keel is a devise on the bottom of the vessel, yes . Now this keel can be lowered and raised by a button being pressed? I would think a keel is permanent in place but I’m no expert. I’m going to google this. RIP to all who have gone to the spirit world ✌🏼🦋✌🏼

[@deemo5245]

Not being a boat person, what’s the point

[@johnnyllooddte3415]

now it sits on the bottom

[@marycamilleri447]

Seems they are ready to send the boat ou

[@rijeckapruga5718]

All the experts, that's why he sank at anchor .

[@davidbrumbaugh3950]

Anchoring could easily have affected negative resistance to the bending moment.

[@Alanoffer]

The Italian armies weather forecast did not predict a storm of the ferocity that hit this yacht , there seems to be a hysteria by the authorities to find a culprit , it seems this is a total freak storm that hit this yacht and only time will tell if the height of the mast played any part in this tragedy

[@adamosgood]

So many man hours and resources just to satisfy one really rich person.

[@The-Opium-Den]

Bayesian was constructed and initially christened the Salute for a different rich man who was also an avid yachtsman. Sadly, he got into an accident that left him paralyzed before he took delivery of Salute. He eventually sold it to a corporation who in turn renamed Salute the Bayesian after Lynch’s wife bought it from them. So, this ship wasn’t made to satisfy a rich guy. It technically stroked the egos of two rich guys.

[@pacoxxi3302]

the problem wasn't the mast, it sank from the stern, they also had the water taken on board because according to them there were too few guests. they launched the flare 16 minutes after the boat started having problems, and in those 16 minutes they didn't have time to warn the guests, and throughout the day they didn't have time to get a weather report. and the wife leaves the boat without any explanation without notifying her husband or daughter Is it Mast's fault? it certainly can be! but the deaths are the crew's fault.

[@MariaM-up2he]

It looks like a very heavy thing.

[@kauri7tane]

No match for a storm while at anchor, tornado, waterspout

[@mikesmechanical1102]

From the tallest aluminium mast in the world to a standard 6ft deep grave.

[@vincentsouchaud6717]

Hubris?

[@Kai-Malachi]

It was such a beautiful yacht..

[@zenASDF]

In retrospect there was a good case for making that huge mast out of carbon fibre instead of aluminium.

[@nicksargent2747]

Not the world’s tallest mast. That’s M5.

[@jjlpinct]

Good thing it's unsinkable

[@robertgurgo5662]

The mast sank the boat.the IAF confirmed the micro burst hit the boat. The mast acted like a giant lever when the down draft pushed it from the side. In the video you can see it is pushed over once almost recovers but a second blast takes it all the way down.

[@marclawson2536]

Look at the stays, it's as if no one even took the time to read Nigel Caulder.

[@henningwittmann3168]

I See with my simple mind that this rigging and Mast ist too heavy. ITS easy to say Afterwards, but why must IT bee the biggest in the world. RIP , my thoughts are with them WHO died.

[@PhilbyFavourites]

Money,……..

[@henningwittmann3168]

@@PhilbyFavourites yes your right, but Money cant by Love, and that is whats all about.

[@castnetdevon9907]

We all know why we are here.

[@brianbozo2447]

Why does the mast even need to be so tall.

[@scorpio7111]

Same like "Vasa" .

[@MartinMartin-jm8wi]

saw it

[@LONDONiNVESTORTiPS]

Poor design it sank just because of a brief storm. Boat makers clueless

[@jonkje]

Not as clueless as this comment.You don't get a Lloyds certified yacht without complying to strict regulations.

[@stormtrooper9404]

@@jonkjeThose same regulations are a joke when sailing yacht is in question! The basic stability should and will be calculated with or without the Lloyd approval. I bet you didn't know that most points in the certification are building techniques and materials which nowadays are standard even across the cheapest yachts, and basic safety features.. that again are standard across the board. That certification means sh!t Any bavaria or Elan is in line with that! Its just the fools tax atop the insurance(you cant get it otherwise)for the biggest and most expensive yachts..

[@kailaniandi]

That yacht was built for sinking

[@jarnosaarinen4583]

Hows it going now?

[@wjatube]

Its uNSiNkaBle!

[@checkeredflagfilms]

The crew was at fault for not preparing for the weather event. With all the sophisticated instruments, it was well evident trouble was on the way. It seems that large amounts of money elicits a large degree of false security and complacency. Innocent people paid the price as a result.

[@MrVorpalsword]

I've never really had to argue with a billionaire and tell him to close his porthole when its +30º degrees - it cannot be easy.

[@peterquennellnyc]

"With all the sophisticated instruments, it was well evident trouble was on the way." You have proof of that? Fair weather waterspouts form in light wind conditions, dont move so much, and mostly last only 2 to 20 minutes.

[@joeordinary209]

RIP