These very tall ships just look so unstable. The car transporter that fell over in the Solent apparently had pumped ballast and they thought the pumps might have failed. Someone on the tv explained the ship was going round a corner as though that was unusual and scary for a ship to do.
You're right. They do look top heavy, especially with all those shipping containers stacked on deck.
As for going round a corner, not exactly a corner but sailing in a curved path in order to get down the Solent and, more to the point, to avoid the sandbank on which it was beached. Perfectly routine, as far as I know.
Do you think there is an optimum size for seaworthiness? - ie big enough to withstand most storms. That is if ports allowed it -there must eventually be a break even point
Maybe in the future the job of 'tugs ' will be to take ashore containers from even more massive crafts that anchor offshore?