Chart correction N22/23 — chart 37231

37231  19Ed.  11/12/11  LAST  NM  N20/23  N22/23 Substitute Foul ground symbol [K31.1] for swept depth 12.7 meters Obstn   53°58′37″N  8°23′42″E Add Depth 7.4 meters   53°58′43″N  8°23′18″E and extend blue tint and depth contour (10-meter) N to enclose (18(1220)23 Hamburg; DEU CH 1220)

Source: NGA U.S. Notice to Mariners · edition: 19Ed. 11/12/11

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