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Coastwise Ballast Water

Coastwise Ballast Water (Coastwise BW) is BW discharge that did not require crossing the combined US and Canadian EEZ’s when transported from the source location to the discharge location. In general coastal ballast water is water from areas within 200 nautical miles from shore.

Table illustrating whether connections between each coastal region are overseas or coastwise.
A fully crossed table that shows whether transits between two coastal regions are considered ‘overseas’ or ‘coastwise’.
Map showing that coastwise ballast water discharge DID NOT require transport across the combined US and Canadian EEZs.
Map illustrating that coastwise BW discharge is defined as discharge from source port to the discharge port that required crossing the combined US and Canadian EEZs. The abbreviations correspond to the following coastal regions: Alaska (AK), East (E), Gulf of Mexico (GM), West (W), Caribbean (CA), Hawaii (HI), Great Lakes (GL), Canadian East (CE), Canadian West (CW), Canadian Great Lakes (CGL), and Canadian North (CN).