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