This agreement may be amended by unanimous agreement between the contracting parties of governments. Special Agreement on Merchant Ships, 1971; Protocol on Space Requirements for Passenger Ships Travelling on and to destination, 1973 2 For passenger vessels assigned to special occupations for the transport of a large number of special passengers, such as the pilgrim trade, Administration, if it is satisfied that it is not possible to enforce the requirements of this chapter, may exempt these vessels from these requirements, provided that these vessels are fully compliant with the provisions of: the application of a possible revision or amendment of the convention to these vessels is controlled by the parties to the government of this agreement who are directly interested in the particular trades and, if necessary, these governments will continue to amend the agreement in accordance with Article VII. This agreement enters into force six months after three contracting governments signed this agreement without reservation to challenge the acceptance or filing of instruments of acceptance or accession with the Article V Organization of this agreement; provided that at least two of these governments are state governments in whose territory ships are registered for specific trades or whose nationals are transported on ships carrying these activities. formulate, in accordance with these regulations, the general rules that impose minimum safety standards applicable to the particular circumstances of these transactions; This agreement is the general rules applicable to the particular circumstances of the special works in Chapter III, item (e) (ii) (c) Regulation 11 and b) iv) Regulation 3 of Chapter III of the Convention. When issued, after inspection and measurement, to a special passenger vessel that meets the applicable requirements of this regulation. (6) “special trade”: the transport by sea of a large number of special passengers by international travel within the area below (see figure in Appendix I of these rules): …. Special Trade Standards for Passenger Ships The vessels covered by this agreement are passenger vessels operating in special transactions and are registered in countries whose governments are governments contracting the International Convention for the Protection of Life at Sea, 1960 (hereafter referred to as the “agreement”) and the contracting parties to this agreement and the vessels registered in areas to which the application of the convention was extended in accordance with Article XIII of the Convention and which were extended in accordance with Article IX of that convention. 1 the rules attached to the special agreement on merchant ships of 1971; and considering that the requirements of Chapters II and III of the above-mentioned agreement could be amended for domestic-registered passenger vessels engaged in special professional activity for a large number of un transported passengers; “Special Trade Passenger”, a passenger transported to specialized factories on the weather bridge, the upper deck and/or between bridges that accommodate more than eight passengers.