144 



4 



1. . (2) Section 3 (33 U.S.C. 1002) is amended to read as 



2 follows : 



3 "Sec. 3. Subject to the provisions of sections 4 and 5, 



4 the discharge of oil or oily mixture from a ship is prohibited 



5 unless — 



6 " (a) the ship is proceeding en route; and 



7 " (b) the instantaneous rate of discharge of oil 



8 content does not exceed sixty liters per mile, and 



9 , " (c) (1) for a ship, other than a tanker — 



10 " (i) the oil content of the discharge is less than 



11 one hundred parts per one million parts of the mix- 



12 ture, and 



13 " (ii) the discharge is made as far as practicable 



14 from land ; 1 



15 "(2) for a tanker, except discharges from ma- 



16 chinery space bilges which shall be governed by the 



17 above provisions for ships other than tankers — 



18 " (i) the total quantity of oil discharged on a 



19 ballast voyage does not exceed one fifteen-thou- 



20 sandths of the total cargo-carrying capacity, and 



21 " (ii) the tanker is more than fifty miles from 



22 the nearest land.". 



23 (3) Section 4 (33 U.S.C. 1003) is amended— 



24 (A) by changing the word "shall" to "does" in 



25 the introductory clause thereof ; 



