Section 13 in The Merchant Shipping (Crew Accommodation) Rules, 1960
13. Drainage.
(1)In every ship to which these rules apply efficient drainage by pipers or channels shall be provided for every part of the crew accommodation situated on an open deck wherever such drainage is necessary for clearing water shipped from the sea.(2)There shall be no drainage from any source (not being sanitary accommodation) into the sanitary accommodation forming part of the crew accommodation.(3)Every space appropriated for use as sanitary accommodation shall be served by one or more scuppers which do not serve any space other than sanitary accommodation. The scuppers shall be at least 5.10 centimetres in diameter and shall be situated wherever water is likely to collect on the floor of the space. Provided that no scupper shall be required in washing accommodation appropriated for the sole use of one person.
