Chart correction N51/20 — chart 54480

54480 9Ed. 12/29/12 LAST NM N49/20 N51/20 Add Spoil ground symbol [N62.1] 36°44.0′N 36°02.8′E Spoil ground symbol [N62.1] 36°39.9′N 36°07.9′E (41(136)20 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 9Ed. 12/29/12

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