How Do You Detect Swells?

navigators learned from seem to consult the swells based on feeling them in the body, more so than looking at them. Lewis actually makes a distinction between waves and swellsbut they're not just random. The system of orientation based on swells is not as reliable as the stars, but it pretty reliable. In distinguishing swells, he stressed, you have to wait patiently until the one you want has a spell of being prominently discernible.