I think it best to mention that most prudent captains steer away from weather if it looks like it could get rough. they don't want to spill their cocktails....

also, that video I posted actually caused structural damage due to the then captain being in a hurry (he was fired over the incident) and not reducing rpm to minimize the effects of the high seas. I've been through much rougher than what is in that video, in fact been through a couple of hurricanes, but 98% of the time you can avoid damage by adjusting speed, course etc.. I have been lucky to avoid truly dangerous weather, and hope it stays that way....
DW