Chart correction N40/21 — chart 54388

54388 1Ed. 4/23/16 LAST NM N26/21 N40/21 Delete Depth 11 meters 38°26′40.6″N 27°08′58.9″E Add Depth 9.7 meters 38°26′41.0″N 27°08′56.5″E and extend blue tint and depth contour (10-meter) N to enclose (2(8)21 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 1Ed. 4/23/16

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