Section 7(3) in The Merchant Shipping (Crew Accommodation) Rules, 1960
(3)Every wooden overhead deck shall be at [6.4 centimetres] [Substituted by G.S.R. 61, dated 6th January, 1967] thick and every wooden sheathing shall be at least [5.8 centimetres] [Substituted by G.S.R. 61, dated 6th January, 1967] thick.The Central Government may exempt any ship from either of the requirements of this sub-rule to the extent that it is satisfied that compliance therewith is unreasonable or impracticable in the circumstances.
