Applicability
All ships calling at US ports and planning to discharge ballast water must carry out ballast water exchange or treatment in addition to sediment management. However, ballast water exchange will only be allowed until the implementation dates for treatment systems shown in Table:

Exemptions
The following vessels are exempt from ballast water management requirements, reporting requirements, and recordkeeping requirements:
- crude oil tankers engaged in coastwise trade; and
- vessels which operate exclusively within one ‘Captain of the Port’ (COTP) zone
The following vessels are exempt only from ballast water management requirements
- seagoing vessels that operate in more than one COTP Zone, do not operate outside of the Exclusive Economic Zone (EEZ), and are less than or equal to 1,600 gross register tons or less than or equal to 3,000 gross tons (International Convention on Tonnage Measurement of Ships, 1969).
- non-seagoing vessels
- vessels that take on and discharge ballast water exclusively in one COTP zone.
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