CURRENTS The currents are of monsoonal origin, but tend to follow the trend of the coast. In December and January sets are north - westerly with rates of upto 1.5 knot. In July and August, when the SW monsoon is well established, south-easterly sets with rates of upto 2 knots are experienced. Exceptionally onshore sets of upto 1,5 knots are experienced during the NE monsoon and upto 3 knots during the SW monsoon. For further information see also Sailing Directions, Current Atlases etc. OMISSION OF CERTAIN NAVIGATIONAL AIDS AND WRECKS Certain lights, beacons, buoys and wrecks have been omitted from this chart; for details of these, larger scale charts and the List of Lights should be consulted.