Originally Posted by arsenelupiga
yeah, the trouble it they have to come up in less than 20 seconds not to run out of air and die, and even then injuries, unconsciousness have ability to harm bad.
Really the only storm option for mono folk is to go in the hull due to susceptibility of monos to be turned by relatively small 3-4m breaking wave.
You typically need 7m one for cat which is considerably less common.
That's the kind of fundamentalism that makes desirable not to have separated forums
. Yes cats have advantages having a bigger stability but they can be capsized by wind
alone and some have been so in anchorages
without any sail on.
So let's stop that bullshit that mine is better than yours and assume that both types have advantages and disadvantages in what regards stability.
Regarding being capsized by waves it is true that a cat with the same length has a bigger resistance to be capsized by a breaking wave if wind
is not involved. But that is almost never the case and cats are mostly capsized by a combination of gusts and waves.
In what regards to dissipate the force of a gust a monohull
is incomparably better and do so by heeling while the cat keeps receives the full blow of a gust while facing a breaking wave. That on a mixed situation of breaking waves and wind puts the balance more equal between the two types.
Also while a cat will reach the non return point at 70Ί or so, most monohulls will only reach that point at about 120Ί and while a monohull
capsized at 90Ί will offer very little surface for a breaking wave to induce a rotational movement and still has a considerable righting moment, a cat heeled at 70Ί offers a huge surface for a second breaking wave to apply a rotational movement and no righting moment at all. It is also good to point out that most boats capsized by breaking waves are capsized by a succession of two close breaking waves.
Even if not heeled face to a breaking have the big lateral surface of a cat will offer a much bigger surface to be applied a rotational moment by a breaking wave.
Cats if not having keels (even if most of them have) offer the same advantage has monohulls with lifting centerboards regarding the ability to dissipate a breaking wave by a sliding movement.
That tripping effect is as bigger as the surface of the immersed part of the hull, namely the keels. Cats with keels have shallow but longer keels than most modern mono-hulls and the difference in surface should not be big, it is big however regarding old designed boats with full deep keels or with modified fin keels that offer in fact a bigger tripping potential.
Cats once capsized will stay capsized and most monohulls with about 120Ί AVS will need in average about a minute to return to its feet. That is the time needed for a much smaller wave to help putting it on his feet. Boats with a better AVS will be on is feet faster and over 150Ί we can consider that will be practically immediate. Many times if the wave is really big the boat is simply rolled and returns to his feet with the same wave.
Now you can call me a cat hater for just providing a fair comparison regarding stability characteristics between both types