Section 5(2)(a) in The Merchant Shipping (Prevention of Pollution by Garbage From Ships) Rules, 2009
(a)disposal into the sea of the following is prohibited, namely:(i)all plastics, including synthetic ropes, synthetic fishing nets, plastic garbage bags and incinerator ashes from plastic products containing toxic or heavy metal residues; and(ii)all other garbage, including paper products, rags, glass metal, bottles, crockery, dunnage, lining and packing materials;