Chart correction N17/20 — chart 63172
63172 5Ed. 1/27/07 LAST NM N47/19 N17/20 Add “Small Craft Anchorage” area [N12.3] bound by purple dashed line joining 4°12′54.0″N 73°30′54.0″E 4°12′54.0″N 73°31′09.0″E 4°12′09.0″N 73°31′09.0″E 4°12′09.0″N 73°30′54.0″E Period 10s to beacon 4°12′29.3″N 73°30′13.2″E (See N4/09) (6(73)19 Dehra Dun; IND CH 2099)
Source: NGA U.S. Notice to Mariners · edition: 5Ed. 1/27/07
Reference information — always verify against official Notices to Mariners before navigation.