The passage from Tunisia and Libya to Italy is one of the deadliest sea escape routes in the world. Between January and April, more than 30,000 migrants reached Italy.

Italy's government is taking a hard line against the ships of the NGOs. NGOs often use planes to search for migrant boats. The mission is arduous – and sometimes in vain.. AreaRead the video transcript here                 A few minutes ago, the Seabird 2 took off for the North African coast. We accompany Tamino Böhm from the NGO Sea-Watch on a reconnaissance flight.