The Requirement of a Genuine Link Between a Ship and the Flag State in Ship Registration
One of the important objectives of international law in the field of ship registration is to establish order and security in international maritime transport.
Limiting unrestricted freedom of action and ensuring effective control and supervision over ships is only possible when a ship is subject to the effective jurisdiction of its flag state.
With the acceptance of the traditional principle of exclusive sovereignty of the flag state, and in the absence of a superior authority capable of exercising jurisdiction over the high seas, problems arising from inadequate supervision by flag states over their ships led to the recognition that a balance must be created between the interests of individual states and those of the international community.
One limitation in this regard is the requirement of a genuine link and the flag state’s exercise of effective jurisdiction over the ship. Accordingly, the flag state is obligated to ensure the effective enforcement of its laws on ships authorized to fly its flag.
According to some views, a genuine link constitutes a legal principle that creates a legal bond between an individual and their state, resulting in nationality.
International law seeks, on the one hand, to increase the international responsibility of states in controlling ships flying their flag, and on the other hand, to preserve the exclusive jurisdiction of states over those ships. These rights become particularly significant when disputes arise between states over a ship’s nationality.
On this basis, whenever it is established that a particular state is the genuine and effective flag state of a ship, that state will bear international responsibility for incidents and damages arising from the operation of the ship vis-à-vis the international community.
Consequences of the Absence of a Genuine Link with the Flag State
United Nations Convention on the Registration of Ships
The United Nations Convention on the Registration of Ships of 1986 sought, while recognizing the principle of the genuine link and effective jurisdiction as reflected in the jurisprudence of the International Court of Justice, the 1958 Geneva Convention, and the 1982 United Nations Convention on the Law of the Sea, to articulate this principle in a more precise manner by taking into account the perspectives of all states.
Pursuant to Article 5 of the 1958 Convention on the Law of the Sea, each state must establish conditions for granting its nationality to ships for the purpose of registration. Ships possess the nationality of the state whose flag they are entitled to fly, and there must be a genuine link between the ship and the flag state. The flag state must effectively enforce its laws and exercise control over the ship in both technical and social matters.
Under this provision, states are required to enact laws that determine the conditions for granting nationality, while ensuring a genuine link between the ship and the flag state. There is, however, no uniform agreement among states regarding the precise criteria for determining such a link. The United Nations Convention attempts, within certain limits, to clarify the criteria for a genuine link or, more precisely, to restrict the discretionary powers of states through specific methods.
To this end, the United Nations Convention adopted two parallel approaches:
- First, the adoption of measures to harmonize state laws.
- Second, the limitation of state rights and powers through the formulation of general principles of international law.
Criteria and Standards of the 1986 Convention on Ship Registration for Identifying a Genuine Link
The 1986 UNCTAD Convention, without providing a precise and independent definition of the concept of a genuine link, establishes tangible criteria and standards, the strict observance of which ensures the existence of a genuine link between a ship and the state of registration. These criteria include the following.
Ownership Criterion
Pursuant to Article 7 of the Convention, in order to exercise effective jurisdiction, each state must make provisions regarding the level of participation of nationals of the flag state in ship ownership, the provision of crew, or both.
Crew Nationality Criterion
Pursuant to Article 9, paragraph 1 of the Convention, each flag state, in implementing the Convention, must adhere to the principle that a satisfactory proportion of the crew, including officers and seafarers on ships flying its flag, are nationals of that state or persons who are resident or lawfully permanently resident therein.
Criterion of Effective Presence of the Owner, Representative, or Operator in the Flag State
Pursuant to Article 10 of the Convention, the flag state must, prior to registering a ship in its registry, ensure that the ship owning company or a branch of that company is established or has its principal place of business within its territory in accordance with its laws and regulations.
Failing this, the flag state must ensure that a representative or operator is a national or resident of the flag state. Such a representative may be a natural or legal person and must be formally authorized to act on behalf of and for the account of the shipowner.
In particular, the representative or operator must be prepared to appear in legal proceedings and assume the shipowner’s responsibilities under the flag state’s laws and regulations.
Criterion of Financial Capacity of the Ship Manager or Operator
Pursuant to Article 10 paragraph 3 of the Convention, the flag state must ensure that the person or persons responsible for the management and operation of ships flying its flag are in a position to assume the financial obligations that may arise from the operation of the ship, particularly in relation to risks in international maritime transport that are commonly insured against for liability toward third parties.
Frequently Asked Questions Regarding the Genuine Link Between a Ship and the Flag State
It refers to the existence of a legal and practical connection between the ship and the flag state, whereby the flag state exercises effective jurisdiction and control over the ship and applies its laws to it.
Because it ensures that the flag state accepts international responsibility for the ship and contributes to order and security in international maritime transport. Without such a link, accountability and enforcement become uncertain.
The 1986 Convention on the Registration of Ships emphasizes the necessity of a genuine link and requires the flag state to exercise effective technical, social, and administrative control over ships flying its flag.
According to the 1986 Convention, key criteria include ownership participation by nationals of the flag state, the presence of national or resident crew members, the existence of a resident representative or operator in the flag state, and the financial capacity of ship operators to meet potential liabilities.
The absence of a genuine link may lead to state evasion of responsibility, disorder in international maritime transport, and international legal disputes over which state bears responsibility for violations or damages caused by the ship.
Yes. In disputes between states over the nationality of a ship, the existence of a genuine link determines which state is the true flag state and therefore bears responsibility for incidents and damages arising from the ship’s operation. What does the requirement of a genuine link between a ship and the flag state mean?
Why is a genuine link between a ship and the flag state important?
What does the United Nations Convention say about the genuine link?
What are the criteria for identifying a genuine link?
What are the consequences of the absence of a genuine link?
Does the genuine link matter in international disputes?





