Ebb Meaning in Sailing

Ebb refers to the movement of the tide as it flows away from the land and back toward the open sea. This outward flow occurs after high tide and continues until the water reaches its lowest point. Sailors must account for the speed of this moving water, as it can significantly affect the progress of the boat. An ebb current can make it difficult to enter a harbor but very easy to leave for the ocean. One clear example involves a boat moving twice as fast as usual because it is traveling with the ebb flow. The sailor must watch for shifting sandbars that are uncovered as the water level drops. Knowing the timing of the ebb is essential for safe navigation through narrow channels and river mouths. It is the opposite of the flood, which is the movement of water coming back toward the shore.