The trip across the Gulf of Aden is the first leg of one of the world’s riskiest — and busiest — migration and smuggling routes.

The trip across the Gulf of Aden is the first leg of one of the world’s riskiest — and busiest — migration and smuggling routes.

The vessel had 154 Ethiopian migrants on board and sank in the Gulf of Aden on Sunday; 74 people remain missing, and only 12 survived the shipwreck. Hundreds of African migrants…