Registry, route, clock

The tanker left Cotonou in Benin on 16 July, bound for Istanbul. On Sunday morning it was stopped in international waters west of Pantelleria, the island between Sicily and Tunisia. The flag it declared was Cameroon's.[1]

The mechanics ran like this: the boarding party came down by helicopter from the Italian warship Thaon di Revel, a Greek vessel and a Polish patrol aircraft gave support, and the work took about two hours. According to Italy's defence ministry the tanker's master initially did not provide the cooperation requested. The basis was Article 110 of the UN Convention on the Law of the Sea, which allows a warship to check a merchant ship's nationality.[1]

What the operation produced is information and documentation, and Italian authorities are still reviewing it. Defence Minister Guido Crosetto called it "a concrete demonstration of Italy's contribution to the security of the Mediterranean and to the European Union's action". Irini itself was set up in 2020 for the Libya arms embargo; verification boardings were added to its remit later.[1]

What a flag costs

Set the numbers side by side and the place of the bottleneck becomes visible: a registry can be changed quickly, a boarding takes two hours, and what is left at the end is documentation. What is being restricted is less the sea lane than which state's books the ship is written into. There is a reasonable counter-reading: the boarding may have been designed from the outset to gather evidence, and the ship carrying on may be the plan rather than a limit.[1]

The Cameroon flag is also on the Caroline Bezengi, stranded off Oman's southern coast since June. Satellite images reviewed by the AP show an oil sheen of roughly 20 square kilometres spreading from the ship, with crude reaching the shore as of 31 July. Oman ordered the vessel and its cargo removed by 23 July; whether that order was met is not clear. On both ships the shared constraint is the same: whoever holds the authority does not hold the vessel.[2]

So the cost of the regime shows up in re-registration rather than in detained tonnage. The test is simple enough: if Italian authorities turn the documentation taken from the Toa Payoh into a national seizure by the end of September, then there is enforcement behind the verification boarding. If they do not, the only lasting cost is the ship changing its registry.[1], [2]