Section 27(9) in The Merchant Shipping (Crew Accommodation) Rules, 1960
(9)Subject to the provisions of sub-rule(10) of this rule every water closet shall be provided with the following :-(a)a water closet pedestal of single type with-(i)a pan of white vitreous china or other suitable material;(ii)a seat of polished hardwood or other suitable material with an opening of 10.2 centimetres at the front;(iii)a trap with a metal inspection plate; and(iv)an efficient ventilator connected to the out let;(b)an adequate flush of water, which shall be always available and supplied through self-closing non-concussive supply valves with a portable seating in metal which is not likely to become corroded;(c)a soil pipe not less than 10.2 centimetres in diameter so constructed as to facilitate cleaning and minimize the risk of obstruction;the pipe shall have a direct overboard outfall fitted with a strom-valve, unless sit is connected with a main sewage outfall by an efficient and hygienic system;(d)a device for holding toilet paper;(e)a hand rail or grip.
