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§ 1700.31 Seawater cooling overboard discharge.
(a) For discharges from vessels that are less than 79 feet in length:
(1) To the greatest extent practicable, minimize non-contact engine cooling water, hydraulic system cooling water, refrigeration cooling water and other seawater cooling overboard discharges when the vessel is in port.
(2) To reduce the production and discharge of seawater cooling overboard discharge, the vessel should use shore based power when in port if: