Rough weather seperates real boats from bad boats...
Any boat can float and sail (or motor) along in calm or light conditions. Even a plywood box with a sail will move along along. Its when the weather spikes up out of nowhere and that 5-10knt winds just turned to 45+ gale force kicking up large breaking white caps. This is the time where boats and their skippers are put to the test and the real boats are seperated from the not so real boats. Its seems like some boats are just not truely storm capable which if and when you get hit, you could be in grave danger especially considering many videos I seen on youtube. Some of those videos are just scary as heck! This from what I understand is the main thing which makes a boat blue water capable or not.