Chart correction N51/23 — chart 93721

93721   7Ed.  03/30/19  LAST  NM  N48/23  N51/23 Delete Buoy "FS9"   22°32′17″N  113°48′57″E Buoy "FS10"   22°32′13″N  113°49′02″E Buoy "FS11"   22°31′58″N  113°49′12″E Buoy "FS16"   22°31′23″N  113°50′48″E Buoy "FS17"   22°31′15″N  113°50′38″E (See N02, N15/23) Change Characteristic of buoy "FS12" to Mo(C) Y 12s   22°32′05″N  113°49′28″E Characteristic of buoy "FS13" to Mo(C) Y 12s   22°31′48″N  113°49′33″E Characteristic of buoy "FS14" to Mo(C) Y 12s   22°31′59″N  113°49′41″E Buoy to "FS15" Y, pillar, "X" topmark, Mo(C) Y 12s [Q130.6]   22°31′40″N  113°49′46″E Add Buoy "DB1" G, pillar, Fl G 4s   22°31′15″N  113°50′51″E Buoy "DB2" R, pillar, Fl R 4s   22°31′10″N  113°50′46″E Buoy "No 2" R, pillar, Fl R 4s   22°31′27″N  113°50′27″E Buoy "No 3" G, pillar, Fl G 4s   22°31′42″N  113°50′09″E Buoy "No 4" R, pillar, Fl R 4s   22°31′35″N  113°50′11″E Add Buoy "No 5" G, pillar, Fl G 4s   22°31′57″N  113°49′35″E Buoy "No 6" R, pillar, Fl R 4s   22°31′50″N  113°49′36″E Buoy "No 7" G, pillar, Fl G 4s   22°32′15″N  113°48′56″E Buoy "No 8" GRG, pillar, Fl(2+1) G 6s   22°31′58″N  113°49′10″E Add Depth 4.4 meters   22°32′41″N  113°46′05″E and extend blue tint and depth contour (5-meter) E to enclose Depth 3.6 meters   22°32′42″N  113°45′46″E and extend blue tint and depth contour (5-meter) E to enclose (36(1293)23 Tianjin; CHN CH 15447)

Source: NGA U.S. Notice to Mariners · edition: 7Ed. 03/30/19

Reference information — always verify against official Notices to Mariners before navigation.