Chart correction N1/21 — chart 54424

54424 2Ed. 9/22/18 LAST NM N46/20 N1/21 Add Dangerous wreck [K28] 36°49′10.7″N 28°18′00.0″E Dangerous wreck [K28] 36°49′29.2″N 28°18′04.4″E Depth 11.6 meters, blue tint and enclosing depth contour (20-meter) centered 36°48′23.2″N 28°14′26.6″E Depth 18.6 meters 36°48′02.3″N 28°16′07.9″E and extend depth contour (20-meter) and blue tint NW to enclose (46(154)20 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 2Ed. 9/22/18

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