46 C.F.R. § 153.219 Access to double bottom tanks serving as dedicated ballast tanks.
Title 46 - Shipping
(a) Except as prescribed in paragraph (b) of this section, access openings to double bottom tanks serving as dedicated ballast tanks must not be located within a cargo containment system. (b) Each access opening to a double bottom tank that is a dedicated ballast tank and that is located within a cargo containment system must be: (1) Enclosed in an access trunk extending to the weatherdeck; (2) Separated from the cargo containment system by two manhole coverings; or (3) Approved by the Commandant (G-MSO). [CGD 78–128, 47 FR 21207, May 17, 1982, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983]
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart B—Design and Equipment
General Vessel Requirements
§ 153.219 Access to double bottom tanks serving as dedicated ballast tanks.
