The Mexican Navy announced on Thursday that it had seized a semi-submersible vessel carrying nearly four tons of cocaine. The seizure of 179 packages of the drug is the latest result in an effort to curb maritime trafficking of illicit substances across the Pacific Ocean—an issue also being addressed by the United States through a series of deadly attacks in the Caribbean against vessels suspected of carrying drugs. Omar García Harfuch, Mexico’s secretary of security, reported in a post on X that the interception of the vessel—known as a “narco-submarine”—took place in Mexican waters near Manzanillo, in the state of Colima. Three people have been arrested over suspected ties to the shipment. The Mexican navy (Semar) said that the operation involved an ocean patrol vessel, two fixed-wing aircraft, two rotary-wing aircraft, and two interceptor boats. It also received support from US Northern Command and the Joint Interagency Task Force, which provided intelligence to locate the target at sea. Harfuch emphasized that this action adds to other seizures made during the past week, which have resulted …