@Tomber42
On given day/hour, wind wave and swell were collinear
so swell arrow overlaps wave arrow.
Now, at the same location, we have
8a16641d-1514-4170-b5ca-59ae9efb89cb-εικόνα.png
and on Thursday (noon) ....
8f988717-4e24-4e69-ae60-95f45c0c03d5-εικόνα.png