A/RES/71/123 Sustainable fisheries, including through the 1995 Agreement for the Implementation of the Provisions of the United Nations Convention on the Law of the Sea of 10 December 1982 relating to the Conservation and Management of Straddling Fish Stocks and Highly Migratory Fish Stocks, and related instruments vessels from accessing their ports followed by a report to the flag State concerned, when there is clear evidence that they are or have been engaged in or have supported illegal, unreported and unregulated fishing, or when they refuse to give informati on either on the origin of the catch or on the authorization under which the catch has been made; 77. Reaffirms paragraph 53 of its resolution 64/72 with regard to eliminating illegal, unreported and unregulated fishing by vessels flying “flags of convenience” and requiring that a “genuine link” be established between States and fishing vessels flying their flags, and urges States operating open regis try to effectively control all fishing vessels flying their flag, as required by international law, or otherwise stop open registry for fishing vessels; 78. Notes the challenges posed by vessels determined under international law to be without nationality that are fishing on the high seas and that such vessels are engaging in illegal, unreported and unregulated fishing activities as defined under the International Plan of Action to Prevent, Deter and Eliminate Illegal, Unreported and Unregulated Fishing of the Food and Agriculture Organization of the United Nations, and encourages States to take necessary measures where appropriate, consistent with international law, including enacting domestic legislation, in order to prevent and deter vessels without nationality from engaging in or supporting illegal, unreported and unregulated fishing; 79. Encourages States, either directly or through competent and appropriate subregional, regional or global organizations and arrangements, to consider adopting rules, consistent with international law, to ensure that chartering arrangements and practices related to fishing vessels enable compliance with and enforcement of relevant conservation and management measures, so as not to undermine efforts to combat illegal, unreported and unregulated fishing; 80. Recognizes the need for enhanced port State measures to combat illegal, unreported and unregulated fishing, and urges States to cooperate, in particular at the regional level and through subregional and regional fisheri es management organizations and arrangements, to adopt all necessary port measures, consistent with international law taking into account article 23 of the Agreement, and to further promote the development and application of standards at the regional level ; 81. Welcomes the entry into force of the Agreement on Port State Measures to Prevent, Deter and Eliminate Illegal, Unreported and Unregulated Fishing on 5 June 2016, 10 and encourages States and regional economic integration organizations that have not yet done so to consider ratifying, accepting, approving or acceding to the Agreement; 82. Notes the capacity development programme of the Food and Agriculture Organization of the United Nations aimed at facilitating and supporting the implementation of the Agreement on Port State Measures to Prevent, Deter and Eliminate Illegal, Unreported and Unregulated Fishing and related instruments, which contributes to the development of national capacity of both parties and non-parties, including the strengthening of the institutional, operational and enforcement capacity of developing States with a view to maximizing the benefits of its implementation; 83. Also notes, in this regard, the regional workshops convened by the Food and Agriculture Organization of the United Nations on implementing the Agreement on Port State Measures to Prevent, Deter and Eliminate Illegal, Unreported and 18/40