Section 155.420 - Pumping, piping and discharge requirements for oceangoing ships of 100 gross tons and above but less than 400 gross tons(a) No person may operate an oceangoing ship of 100 gross tons and above but less than 400 gross tons that is fitted with main or auxiliary machinery spaces unless: (1) The ship has at least one pump installed to discharge oily mixtures through a fixed piping system to a reception facility;(2) The piping system required by this section has at least one outlet accessible from the weather deck;(3) For a ship on an international voyage, the outlet required by this section has a shore connection that meets the specifications in § 155.430 , or the ship has at least one adapter that meets the specifications in § 155.430 and fits the required outlets;(4) For a ship not on an international voyage, the outlet required by this section has a shore connection that is compatible with reception facilities in the ship's area of operation;(5) The ship has a means on the weather deck near the discharge outlet to stop each pump that is used to discharge oily mixtures; and(6) The ship has a stop valve installed for each outlet required by this section.(b) Paragraph (a) of this section does not apply to a ship that has approved oily-water separating equipment for the processing of oily mixtures from bilges or fuel oil tank ballast.(c) This section does not apply to a fixed or floating drilling rig or other platform.CGD 75-124a, 48 FR 45715, Oct. 6, 1983, as amended by USCG-2000-7641, 66 FR 55572 , Nov. 2, 2001