| Chart Name: | BOSTON HARBOR MA |
| Scale: | 1:25000 |
| Size: | 36" x 52" |
| Edition #: | 63 |
| Edition Date: | 08/01/08 | (NM 07/04/09) | (LNM 06/23/09) |
| Last Update: | 05/20/09 |
| Description: | Boston Harbor, the largest seaport in New England, includes all the tidewater lying within a line from the southern extremity of Deer Island to Point Allerton, about 4 miles to the southeastward. Numerous dangers lie in the approaches to the harbor. The northeastern approach is obstructed by islands and shoals which extend 4 miles from the entrance; between them are the dredged channels which lead into the harbor. In the southeastern approach, broken ground extends as much as 3 miles from shore. The approaches are marked by a number of powerful lights, and the principal dangers are buoyed. |
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| NM = Notice to Mariners LNM = Local Notice to Mariners |
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