Chart correction 24/21 — chart 55040
55040 4Ed. 7/31/99 LAST NM 23/21 24/21 Add Buoy BRB, pillar, double ball topmark, Fl(2) W 10s AIS [Q130.4] 40°35.8′N 27°41.1′E Anchorage symbol [N10] 40°50.0′N 29°13.8′E (16(65), 17(69)21 Istanbul)
Source: NGA U.S. Notice to Mariners · edition: 4Ed. 7/31/99
Reference information — always verify against official Notices to Mariners before navigation.