Section 12A(11)(h) in The Merchant Shipping (Prevention of Pollution by Oil from Ships) Rules, 2010
(h)For the purpose of maintenance and inspection, any oil fuel tanks that do not border the outer shell plating shall be located no closer to the bottom shell plating than the minimum value of h in sub rule (6) and no closer to the side shell plating than the applicable minimum value of w in sub rule (7) or (8).