There were nervous whitecaps on Vicki's drink.
"Backlash"
Winston Marks
It was no longer possible to press toward the land, for the leads of water were too wide and were lined with small whitecaps, while the tossing seas hurled mountains of ice and foaming water over the pack edge.
"My Attainment of the Pole"
Frederick A. Cook
whitecaps were to be seen all about them and the boys glanced anxiously at each other.
"The Go Ahead Boys on Smugglers' Island"
Ross Kay