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I agree on the likely outcome nevertheless I will let you climb to free the top from the remaining bit still standing.

That is indeed a risk and the cabin top needs to be strong enough to break the mast to mitigate it. Nevertheless the reward of this is that you remove many potential failure points (shrouds, stays and their connections). Choose your evil...

Good designers always design for minimum weight for a certain safety factor (which might be high if you want a "bullet proof" boat) otherwise it is like splicing a big chain to a small one, you get the inconvenience of the big chain for the resistance of the small one. It is true that a...

Yes, nevertheless by vastly overdesigning the mast, you gave away the advantage of the moment connection in the tabernacle!

A moment connection isn't inherently structurally better, it just means that the Euler buckling length of your first panel is shorter (which is good and efficient!) but you can get the same effect on a deck stepped mast by lowering your first spreaders (and potentially adding an extra set at the...

In my earlier message, I meant keel stepped prohibited on IMOCAs... if you get rolled and loose the mast, with a deck stepped mast, the odds of not having a hole in the roof are higher plus you can free the mast quickly to save the hull as there is no need to climb to spreader level to cut...

OK, the last thing I would want... I know that keel stepped makes sense on a racing boat as the first spreaders can be higher up but there is a reason why deck stpped is prohibited on IMOCAs...

Keel stepped is the last thing you want offshore as it breaks the cardinal rule of making your best to  keep the water out in all conditions. I would make an exception for a freestanding mast as it becomes a tradeoff between robustness and an extra hole in the roof!

Never had the chance to know the winter version of Kinsale but the summer one was fine by my standards! Most coastal places are at least a bit fake as they tend to become too expensive for the locals. it is worse in Devon and Cornwall IMHO. I wouldn't mind touring Ireland during the winter...

I like this theory! It is always the same boats who get to count horror stories. At the other end of the bar there is the quiet guy who modestly say "we found ourselves in the path of this bad thunderstorm which made the news, but we got lucky and managed to get the main in 2 minutes before the...

Not sure why you don't want to give us the title and the legend! What's the difference between the triangles pointing up and down, what angle did they take for the "angle of stability" did the non casualties go through a storm ? Where and when did the " stability casualties" happened. The title...

So what is a square or a triangle for Mr Obvious ?

@MikeJohns, at the very least we need a title and a legend to understand a graph!

Here is the diagram you posted before : I am not sure where this idea of knockdown vs capsize comes from... Seriously looking at this graph, range of stability doesn't seem to be such a big factor, as all kind of boats seem to have been rolled!!! Actually you would need to plot on the graph...

If you cherry pick evidence that suits you, you can reach any pre-determined conclusion...

Not really as not that many were built, your best bet for a cruising boat would be Erik Lerouge : http://erik.lerouge.pagesperso-orange.fr/mono_15.htm - Scroll down... Or Romaric Neyhousser who is working for Verdier and designed this : Yes, would  not work now within the open 60 class or...

It is a trade off, that's sure but as you have to increase the size/strength of the mast to compensate they become bullet proof to forces dues to a "non standard use" such as pitchpoling! Also an unstayed rig is a pure cantilever (no compression) thus needs to be solid at its base but can be...

Going upwind, if you have a fin keel boat with a modern rudder, best option seem to sail the boat very slowly (probably just the storm jib or staysail up) but fast enough to have directional stability.

That's a bit of a left field option but I would consider an unstayed rig : You get rid of lot of potential failure points by removing the stays!

I was actually agreeing with you, I don't take time to make long paragraphs with qualified sentences but what I just meant is that there is no reason to be nostalgic on stuff like barn door rudders. They existed at some point for good reasons but now that design knowledge and material science...