In seeking to fulfill its mission, the International Maritime Organization (IMO) is dependent on the capabilities of its Member States. While flag States remain primarily responsible for ensuring compliance of their registered vessels with instruments adopted under that United Nations specialized agency's aegis, coastal States also play a competing but complementary role in the balance of jurisdiction over ships. In particular, the right to regulate the vessel's intent on visiting the port, or its presence therein, is often relied upon to account for the limitations of flag State enforcement. The capacity to act as a port State under international law is the basis for certain implementation mechanisms stemming from treaty provisions on port state control, as well as for innovative practices of port States, either collectively or individually. This chapter provides the reader with an overview of the role of port State jurisdiction in IMO law and practice, and the challenges that can arise in the complex relationship between port States and the IMO.
The power to regulate on-board protection of merchant vessels lies with the flag state. However, the national models of regulation are not developed in a unilateral vacuum. In fact, the whole concept of flag state jurisdiction and legislative power has to be understood and exercised on the national level in close relation with the general regime of the international law of the sea. The aim of the article is therefore two-fold: first, it aims to provide a background for the country reports in this special issue by giving a brief insight into the problem of piracy in the twenty-first century and the international approaches towards this problem. Here the article also provides an insight into the legal background by presenting the concept of piracy in the law of the sea and connected law enforcement powers. Thus, this part of the article provides the overall context in which the discussions concerning on-board protection and the development of national regulations have occurred. Second, the article analyses the issue of on-board protection from the perspective of the legal framework in international law, as well as relevant international soft-law instruments, influencing the development on the national level. On-board protection of vessels as such is not regulated in the international law; however, international law provides a form of general legal setting, in which flags states navigate. Thus, this article aims to draw a picture of the international context in which flags states develop their specific legal approach.