The courtroom in Hamburg can be a busy place, with delegations sometimes numbering 30 to 40 people.

Among the applicants or respondents are ministers — foreign affairs, justice, transport or fisheries — legal advisors, ­ambassadors and academics from distinguished universities, such as Oxford, Cambridge and the Sorbonne, as well as leading law firms.

Applications to ITLOS can be via the unilateral request of a state or by two states agreeing. So far there have been no cases between a non-United Nations Convention on the Law of the Sea (UNCLOS) state party and a state party, ­although two such entities could agree to bring a case.

The Iran-UK Stena Impero ­dispute is in theory a candidate, but unlikely. Acting registrar ­Ximena Hinrichs Oyarce said ­ITLOS cannot express any views on the situation in the Strait of Hormuz.

She said that because commercial interests in a ship are so ­diverse, the flag state can represent them all.

“The tribunal has developed the notion of the ship as a unit. The flag state can make claims on behalf of itself, the shipowner and the crew,” she added.

Hinrichs hails from Concepcion, Chile, where she read law. She studied for a Phd at the Law of the Sea Institute, University of Hamburg, worked for the IMO in London for two years and has been with ITLOS for 22 years.