The sheer force of their flow can also cause difficult eddy and wave conditions even on calm days. Read your chart to help identify danger points. Use any available information to estimate favorable current, and time your passage or crossing for that period. Paddle in current under controlled conditions to familiarize yourself with its effect. Exercise caution when the current and wind direction oppose each other.
Waves become steeper and break heavily on shallows.
Avoid those areas when waves are large or strong currents are forced to flow over them. Waves become steeper and break on beaches and shoals. Avoid landing in surf with a loaded kayak. Avoid surf on rocky beaches. Seas become chaotic.