The Finnbirch is an example that also a relatively large vessel (length 156 m) can broach quite easily.
This was discussed in an earlier thread. They had no idea what they were doing and ignored the signs that a broach was imminent.
Stunning was that it became evident during the interviews that the ship’s captain was not aware of the ship’s rather special stability characteristics with larger heeling angles under certain cargo conditions nor how the stability curve of the ship should be interpreted. He was not alone among the masters of the shipping company in this respect.
The master of Finnbirch could not remember that the phenomena which can develop with following seas had been presented during his training at the ship officer’s school. According to the minutes of the maritime inquiry following the sinking, he was of the opinion that it was advantageous to proceed at full speed in a following sea and thereby pass the waves and reach a condition which corresponded with meeting a head sea. I rest my case…