I was fascinated to read that scientists investigating rogue waves have not only recreated one under laboratory conditions: it's also an almost picture-perfect copy of a very famous wave in Japanese art.
Mark McAllister at the University of Oxford and his colleagues have recreated the Draupner wave, the first rogue wave ever recorded.
The 1995 wave, measured in the North Sea, had a maximum height of 25.6 metres ... Prior to this, the existence of these freak waves was merely anecdotal.
The team generated two sets of waves in a circular tank, and crossed them at various angles in an attempt to recreate the conditions that formed the Draupner wave. When these wave groups crossed at an angle of 120 degrees, they coalesced to produce a wave with the scaled height and length of the Draupner wave, 1/35th of the original.
The wave looked remarkably similar to Japanese artist Katsushika Hokusai’s The Great Wave off Kanagawa.
While the causes of rogue waves aren’t known for certain, they are more common in crossing sea conditions, says McAllister. They are difficult to predict, appear suddenly, and have previously been implicated in maritime disasters.
There's more at the link.
I've written about rogue waves in these pages before. They're far from unknown, but previously only from anecdotal evidence, plus the damage they left behind. For example, the Norwegian tanker Wilstar ran into one off South Africa in 1974. This was the result.
That photograph was taken in Cape Town harbor after the ship very, very carefully made her way there, to offload her cargo of crude oil and undergo preliminary repairs. I went down to the dockside to look at her. You could, quite literally, have driven a double-decker bus into her hull through the hole in her bows - it was that big. I think every seaman and merchant navy officer in the harbor took the opportunity to stroll over to her berth and stand there, looking very thoughtful as they examined the damage. It was most impressive . . . and they were about to sail in the same seas where she'd met that wave. It gave them plenty of food for thought!
The Draupner rogue wave was the first of its kind to be precisely, accurately measured, allowing further investigation. Full marks to those involved for determining the angle at which cross-currents need to merge to generate such waves. Perhaps, with this information, weather conditions favorable for them to occur might be better forecast, improving maritime safety.
As for Hokusai's famous print, perhaps the best-known artwork in Japanese history, here's more information about it.
I'd love to know how and why Hokusai's wave image so closely matches that of a real rogue wave. Coincidence? Had he, perhaps, seen or been told of such a wave off the coast of Japan? I suppose we'll never know. It's one of the more tantalizing questions of art history, IMHO.