Royal Decree No. 34 of 1974 issuing Law on Marine Pollution Control.

This Decree is composed of 7 Chapters: General provisions (I); Application of the Law (II); Particular defences (III); Registration, notification and insurance conditions (IV); Management and execution (V); Liability for costs and damages (VI); Entry into force of this Law (VII).
Chapter II prohibits any person or ship to drain any hazardous substance in pollution-free areas (arts. 1-4). Article 6 addresses matters related to liability of the captain of the ship (art. 6). Offences and penalties are contained in articles 7-11. Every ship registered in the Sultanate shall conserve the Oil Register (art. 1), and every ship which receives or delivers oil into the Territorial Sea of Oman and is not registered in the Sultanate shall conserve the Oil Register (art. 2). All owners of ships who carry or load pollutants shall present to the Minister a financial liability certificate (art. 6). Pollution Control Officers shall have the right to inspect the ships (art. 5). The Minister or any Pollution Control Officer has the authority to confiscate the ship (art. 8). The Minister shall issue additional laws, provisions and rules necessary for the implementation of this Law (art. 16).