Chart correction N37/23 — chart 55161

55161   2Ed.  03/19/11  LAST  NM  N19/23  N37/23 Add Submarine pipeline [L40.1] between   41°15′19″N  36°23′14″E   41°15′59″N  36°24′05″E Buoy Y, can, "X" topmark, Fl(4) Y 15s [Q130.6]   41°15′59″N  36°24′08″E (22(109)23 Istanbul; TUR CH 131)

Source: NGA U.S. Notice to Mariners · edition: 2Ed. 03/19/11

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