Chart correction N17/21 — chart 37226
37226 19Ed. 3/9/13 LAST NM N16/21 N17/21 Delete Depth 14.7 meters 53°59′07″N 8°26′50″E Depth 15.9 meters 53°58′59″N 8°26′43″E Depth 8.3 meters 53°56′40″N 8°37′36″E Add Entry prohibited area [N2.2] bound by purple composite line joining 53°52′39″N 8°52′24″E 53°51′20″N 8°55′50″E 53°50′48″N 8°55′06″E 53°50′40″N 8°52′35″E 53°51′23″N 8°52′28″E 53°52′00″N 8°51′16″E Depth 7.1 meters 53°56′39″N 8°37′46″E Depth 13.6 meters 53°59′02″N 8°26′53″E (Plan) Delete Depth 18.2 meters 53°53′31.6″N 8°42′14.1″E (See N47/20) Add Depth 15.7 meters 53°53′34.6″N 8°42′09.5″E (44(5189)20, 4(1220), 10(1220, 1611)21 Hamburg; DEU CH 44)
Source: NGA U.S. Notice to Mariners · edition: 19Ed. 3/9/13
Reference information — always verify against official Notices to Mariners before navigation.