Originally Posted by Snowpetrel
Not sure how well you'd ride over the one at ten seconds... I understood the 30% rule was that a breaking wave with a height 30% of your LOA (or roughly equal to your beam) could capsize you if you are beam onto it, one 60% of LOA (or x2 beam) most likely will capsize you if you end up beam on to it.
That's possible only if you're a "sitting duck" ie drifting sideways. In real life you are sailing and that adds a lot of dynamic stability.
Like on my last crossing from Azores
there was a gale for two or three days with wave heigh approximating 6m, highest 5% about 8m and uncommonly steep too considering their height.
What I did was steering
the waves in the quarter and when seeing larger ones coming taking them more on the beam which effectively made the bow wave to break the incoming waves before hitting the boat
resulting just spray or foam on decks and much less rolling compared to running. The boat
was 65' so well in the 30% region.