Chart correction N33/22 — chart 54421

54421 7Ed. 09/25/21 LAST NM N06/22 N33/22 Add Buoy BY, pillar, double cone topmark points upward, QW [Q130.3] 36°42′31″N 28°56′40″E Buoy YB, pillar, double cone topmark points downward, VQ(6) + L Fl W 10s [Q130.3] 36°42′11″N 28°56′34″E (22(83)22 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 7Ed. 09/25/21

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