(a) Except as provided for in paragraph (b) of this section, in new oceangoing ships of 4,000 gross tons and above other than oil tankers, and in new oceangoing oil tankers of 150 gross tons and above, ballast water must not be carried in any fuel oil tank.
(b) Where abnormal conditions or the need to carry large quantities of fuel oil render it necessary to carry ballast water that is not a clean ballast in any fuel oil tank, that ballast water must be discharged to reception facilities or into the sea in compliance with part 151 of this chapter using the equipment specified in Sec. 155.370, and an entry shall be made in the Oil Record Book to this effect. (Approved by the Office of Management and Budget under control number 1625-0009) [CGD 75-124a, 48 FR 45715, Oct. 6, 1983, as amended by USCG-2006-25150, 71 FR 39210, July 12, 2006]