Upon detection, the participating units shall approach a vessel suspected of carrying persons circumventing or intending to circumvent checks at border crossing points or of being engaged in the smuggling of migrants by sea in order to observe its identity and nationality and, pending further measures, shall survey that vessel at a prudent distance taking all due precautions. The participating units shall collect and immediately report information about that vessel to the International Coordination Centre, including, where possible, information about the situation of persons on board, in particular whether there is an imminent risk to their lives or whether there are persons in urgent need of medical assistance. The International Coordination Centre shall transmit that information to the National Coordination Centre of the host Member State.

Where a vessel is about to enter or it has entered the territorial sea or the contiguous zone of a Member State that is not participating in the sea operation, the participating units shall collect and report information about that vessel to the International Coordination Centre, which shall transmit that information to the National Coordination Centre of the Member State concerned.

The participating units shall collect and report information about any vessel suspected of being engaged in illegal activities at sea, which are outside the scope of the sea operation, to the International Coordination Centre, which shall transmit that information to the National Coordination Centre of the Member State concerned.