CURRENTS From June to September the general direction of flow is south-easterly; from November to April it is north-westerly. Rates are generally less than 0.5 knots. During May and October there is no predominant direction of flow. There is great local variability superimposed on this general pattern. Eddies may cause both onshore and offshore sets and even reverse the general direction of flow. Great caution should be exercised at all times, particularly near reefs and shoals. For further information see Admiralty Sailing Directions.