A smooth sea never made a skilled sailor. (English proverb)
We’re always looking for calm seas and smooth sailing; they make the ride so much more pleasant than choppy waves and strong wind. Anyone with only a little training can sail under the easy conditions. But in times of strong winds and storms, you want a sailor who is experienced, having developed his skills in the difficult seas.
Men of Sidon and Arvad were your oarsmen; your skilled men, Tyre, were aboard as your sailors (Ezekiel 27:8).