From a statistical point of view they are out there.
Hit one of these breaking and it could spoil your whole day.
Once was on a DD that piled into a wave with height of at least 50'. Smashed the bridge glass, tumbled the gyro's, shut down the boilers, and moved MT 51 back about 18".
The only thing that saved us from sailing under was just luck.
Unless you had one of these...
That would be scary for sure!