Chart correction N42/21 — chart 37226
37226 19Ed. 3/9/13 LAST NM N32/21 N42/21 Delete Buoy “B 10” 54°03′12″N 8°36′25″E Relocate Buoy “B6” from 54°04′22″N 8°37′31″E to 54°04′40″N 8°38′08″E Change Buoy to “B8” R, spar 54°03′55″N 8°37′20″E (See N7/21) Add Buoy “B 10” R, pillar, Fl R 4s 54°03′04″N 8°36′40″E (33(1350, 1360)21 Hamburg)
Source: NGA U.S. Notice to Mariners · edition: 19Ed. 3/9/13
Reference information — always verify against official Notices to Mariners before navigation.