The Fundamental aim of Port State Control is to eliminate Sub-standard ships in order to ensure safer ships and cleaner oceans. The main philosophy to the port state control is to identify sub-standard ships at any port and corrective action taken before they are allowed to proceed to sail. Provision for control emanates from the following IMO instruments:-
Reg. 19 - Chapter 1 of SOLAS Convention 1974 as amended.
International Convention of Load Line 1966 & its Protocol.
International Convention for Prevention of Marine Pollution from ships (MARPOL) 73/78.
International Convention of STCW 1978 as amended.
International Regulations for preventing Collisions at sea (COLREG) 1972.
International Labour organization (ILO) convention No. 147.
These provisions provide for control procedures to be followed by the contracting Governments with regard to foreign flag vessels visiting their ports. The effective use of the provisions enable the State Authorities in identifying Sub-Standard Ships and ensuring that remedial measures are taken for the deficiencies identified by them. Ships of the countries which are not party to the various International Conventions can also be subjected to equivalent inspections to ensure commensurate level of safety. The International Maritime Organization (IMO) has adopted various Resolutions giving guidelines on such inspections. The guidelines also provide that all possible efforts should be made to avoid a ship being unduly detained or delayed. However, wherever necessary Sub-Standard Ships are detained and corrective action taken before allowing them to sail out to sea.