Chart correction N51/23 — chart 44465
44465 4Ed. 06/28/14 LAST NM N48/23 N51/23 Add Buoy "G-3" G, pillar, cone topmark, Fl G 4s 54°32′11″N 18°36′05″E Buoy "G-4" R, pillar, can topmark, Fl R 4s 54°32′02″N 18°36′04″E Buoy "G-5" G, pillar, cone topmark, Fl G 4s 54°32′12″N 18°34′57″E Buoy "G-6" R, pillar, can topmark, Fl R 4s 54°32′03″N 18°34′57″E (46(573)23 Gdynia)
Source: NGA U.S. Notice to Mariners · edition: 4Ed. 06/28/14
Reference information — always verify against official Notices to Mariners before navigation.