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Stephen Due's avatar

There's an interesting parralell with the voyage of the Apostle Paul from Palestine to Rome, just under 2000 years ago. The ship carrying him met with a storm of the type you describe. Eventually the crew were able to hold the ship with four anchors off the coast of Malta during the night. The next morning they decided to let the anchors go and allow the wind to drive the ship into a sandy bay - a manouvre that was successful. The account of the shipwreck is given in Acts 27. A well-known book by an experienced British sailor, James Smith, sought to validate the biblical account based on modern knowledge of the behaviour of winds and storms in the Mediterranean. It was published in 1848 with the title "The Voyage and Shipwreck of St. Paul".

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David O'Halloran's avatar

Thanks for this John. Interesting points indeed. We have a 12 meter ketch (two masts) made of steel. She is a Joshua designed for Bernard Moitessier in the late 60s. She is a double ender (like a viking long boat) and has a wine class profile with a long keel, external rudder and inboard ballast. She is arguably the most sea worthy sailboat ever made and we were lucky to find her. Bayesian is - for us - an unsafe design. I would not take my family on a boat like that. I would race on it but not with them. She has a flat bottom, like a frying pan, and the only thing stopping her from turning turtle at any moment is a long thin keel with a huge heavy bulb on the end. That is all. The idea is to get speed and ability to turn on a dime. What is worse that keel is not part of the boat and can move up and down - for port entry and so on. Her mast is too high. That long thin keel is there to counteract it. This raises her center of gravity dangerously. In olden times a 55 meter long boat would have had up to three masts and long bowsprit and overhanging rear boom which allows the same sail area overall as Bayesian achieved with that 60 meter mast. No mast, for us, should ever even approach the length of the hull and certainly not go beyond it; and certainly not with that hull profile or keel design. Bayesian, in our view, was an accident waiting to happen, by design. We do not think the skipper was aware just how unstable she was. Not his fault. That is a pretty radical modern racing type design. We survived near ship wreck in a storm off the Bahamas in 2010 because of our hull, low masts, clean flush deck and three anchors. Our boat would, we think, not have noticed the squall that hit Bayesian. We think the Bayesian skipper sensed little threat from that weather forecast as he over estimated Bayesian's stability, hence the open hatches and lack of urgency or prep. The squall hit the mast and the windage - resistance from the over high mast alone - was enough to knock her on her side in seconds. It looks to us as if she up filled through the open port holes and hatches and sank in 16 minutes dragged down by that mast. Earlier we though it might have been an issue with the keel but the news over the past two days points to the mast. We feel sure the crew were taken completely by surprise, never believing Bayesian could be that unstable or could possibly topple over so fast in those conditions and with that sea state. Perhaps, to add insult to injury, the keel was raised to improve the riding at anchor and that did not help one little bit. The position of the keel will be key for the investigators. For us, what this tragedy demands is designers should tell owners and skippers very clearly about stability issues with flat bottomed boats with high masts and lifting keels.

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