Only around ~75 incidents reported this decade [0], so it's fairly uncommon. Definitely getting more attention now because of last time though.
[0] (slightly outdated) https://www.bloomberg.com/news/articles/2021-03-24/suez-bloc...
[0] (slightly outdated) https://www.bloomberg.com/news/articles/2021-03-24/suez-bloc...
Sounds pretty common, or as the grandparent said, "tens of minor incidents that...didn't get reported on"
1. https://m.huffpost.com/us/entry/us_605c2e44c5b67ad3871c9afe