Oh hey it’s one of those drawings Olafur Eliasson made on a boat with his dad.
The map is not of the wave on the sea, but of the boat on the wave.
11 June 2024, 921/441: Olafur Eliasson & Elias Hjörleifsson, “Wave drawing from north of Iceland” 40-50,000 DKK [bruun-rasumussen.dk]
[update: the listing is gone, after the artist’s studio said it was a work of Hjörleifsson only. Such things are always complicated, I suppose, but perhaps more scholarly interest in Hjörleifsson’s oeuvre will clear things up.]
Previously, related: Mapping Olafur Mapping [in which, now that I mention it, this boat/pen project was described as Elias’s, not Eliasson’s.]