Waves can be described as either swell waves or sea waves. Sea waves are generally generated locally and move in the same direction as the wind. They have a more irregular appearance. Swell waves have been generated elsewhere, move out of their area, and travel in regular succession and in a well-defined direction. Waves travel in groups, or "sets". The higher waves occur near the centre of the group. To estimate wave height, average only
the well-developed waves in the centre of the group. At least 15-20 waves should be noted.
Waves can be described as either swell waves or sea waves. Sea waves are generally generated locally and move in the same direction as the wind. They have a more irregular appearance. Swell waves have been generated elsewhere, move out of their area, and travel in regular succession and in a well-defined direction. Waves travel in groups, or "sets". The higher waves occur near the centre of the group. To estimate wave height, average only
the well-developed waves in the centre of the group. At least 15-20 waves should be noted.