46 C.F.R. § 171.140 Drainage of a flush deck vessel.
Title 46 - Shipping
(a) Except as provided in paragraph (b) of this section, the weather deck on a flush deck vessel must be watertight and have no obstruction to overboard drainage. (b) Each vessel with a flush deck may have solid bulwarks in the forward one-third length of the vessel if— (1) The bulwarks do not form a well enclosed on all sides; and (2) The foredeck of the vessel has sufficient sheer to ensure drainage aft. [CGD 85–080, 62 FR 51354, Sept. 30, 1997]
Title 46: Shipping
PART 171—SPECIAL RULES PERTAINING TO VESSELS CARRYING PASSENGERS
Subpart H—Drainage of Weather Decks
§ 171.140 Drainage of a flush deck vessel.
