CURRENTS The currents are of monsoonal origin but tend to follow the trend of the coast. In December and January, the sets are north - westerly with rates of upto 1,5 kn. In July and August, when the SW Monsoon is well established, south - easterly sets with rates of upto 2 kn are experienced. Exceptionally, onshore sets of upto 1,5 kn are experienced during the NE Monsoon and upto 3 kn during the SW Monsoon. For further information see also Sailing Directions, etc. OMISSION OF CERTAIN NAVIGATIONAL AIDS AND WRECKS Certain lights, buoys, beacons and wrecks have been omitted from this chart; for details of these, the larger scale charts and the List of Lights should be consulted.