From the story:
"Another time, when a boat was in trouble in a storm, its captain called on Haff specifically for help. Haff dove in, slipped into a rope rig and, swimming, towed the vessel to safety."
True or not, I loved the visual. It wasn't easy settling on a method and palette that'd get across the idea of a nighttime storm at sea, but after some trial and effort, the pale browns and greens seemed to work best. The key was leaving the raindrops white...gives the rain almost a snowstorm feel, swirling and blinding. Not that it mattered to the superhuman Haff!