Chart correction N31/21 — chart 71238

71238 1Ed. 5/30/15 LAST NM N1/21 N31/21 Delete Light 1°06′34.7″N 104°08′58.9″E Buoy 1°06′31.7″N 104°08′59.9″E Buoy 1°06′22.2″N 104°09′03.3″E Buoy 1°06′30.3″N 104°09′13.5″E Change Light of beacon to Fl(2) Y 12s 1°06′33.4″N 104°09′08.9″E Characteristic of buoy to Fl G 5s 1°06′40.3″N 104°09′21.8″E Shape of buoy to conical 1°06′23.7″N 104°08′56.3″E Shape of buoy to can 1°06′13.7″N 104°09′36.7″E Add Buoy R, can, can topmark, Fl R 2s 1°06′23.4″N 104°09′01.4″E Buoy R, pillar, can topmark, Fl R 1°06′17.2″N 104°08′53.0″E Buoy BRB, pillar, double ball topmark, Fl(2) W 7s [Q130.4] 1°06′29.7″N 104°09′11.0″E (UKHO ARCS 3937-2)

Source: NGA U.S. Notice to Mariners · edition: 1Ed. 5/30/15

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