A heavy swell caused by a strong and prolonged gale over a large expanse of deep water may travel hundreds of miles without appreciably altering its direction.
Ubukhulu bokukhulisa isandi kubangwa bubukhulu kunye nokongeza uqhwithelo olungaphaya kobukhulu bokuphangalala kobunzulu bamanzi nokuba uhambo lwe100 yeemayile ngaphandle kokubonakalayo okuguqulwa ngakwicala.