In November of 2020, a freak wave came out of the blue, lifting a lonesome buoy off the coast of British Columbia 17.6 meters high (58 feet).
The four-story wall of water was finally confirmed a couple of years later as the most extreme rogue wave ever recorded.
Such an exceptional event is thought to occur only once every 1,300 years. And unless the buoy had been taken for a ride, we might never have known it even happened.
For centuries, rogue waves were considered nothing but nautical folklore. It wasn’t until 1995 that myth became fact. On the first day of the new year, a nearly 26-meter-high wave (85 feet) suddenly struck an oil-drilling platform roughly 160 kilometers (100 miles) off the coast of Norway.
https://www.sciencealert.com/giant-wave-in-pacific-ocean-was-the-most-extreme-rogue-wave-on-record