Section 9(2)(i) in The Merchant Shipping (Crew Accommodation) Rules, 1960
(i)The bulkheads and the pars of the ship's side which enclose the crew accommodation shall be insulated in a manner which will prevent overheating of the accommodation, and shall be covered with protective covering which will prevent the condensation of moisture. The Central Government may exempt any ship form the requirements of this clause to the extent that it is satisfied that the crew accommodation is adequately protected by its position and ventilation against overheating and condensation.