empty ballast tank
Defined in 1 dictionary — U.S. Code
United States Code
33 U.S.C. § 1322 — under this section
The term "empty ballast tank" means a tank that—
(i) has previously held ballast water that has been drained to the limit of the functional or operational capabilities of the tank (such as loss of suction);
(ii) is recorded as empty on a vessel log; and
(iii) contains unpumpable residual ballast water and sediment.