Chart correction N42/23 — chart 37231

37231  19Ed.  11/12/11  LAST  NM  N37/23  N42/23 Add Depth 9.1 meters   53°58′47″N  8°23′52″E and extend blue tint and depth contour (10-meter) N to enclose Buoy "Robbenloch" RW, spherical, ball topmark [Q130.5]   53°57′50″N  8°18′40″E (See N37/23) (36(1220), 37(1220)23 Hamburg)

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

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