Chart correction 7/21 — chart 54421
54421 6Ed. 3/17/01 LAST NM 1/21 7/21 Delete Buoy and legend “(2 buoys)” 36°41′14″N 28°46′25″E Add Mooring buoy, can with legend “(2 buoys)” [Q40] 36°41′13″N 28°46′26″E (50(171)20 Istanbul)
Source: NGA U.S. Notice to Mariners · edition: 6Ed. 3/17/01
Reference information — always verify against official Notices to Mariners before navigation.