Traffickers exploit Tanzania’s 1,300km coastline and inadequate port security. Heroin is transported by small vessels southward along Africa’s east coast to Zanzibar and the mainland and in large quantities via land borders from Kenya, through Tanzania, and onward to Mozambique for transshipment to Europe and North America. Smaller quantities are trafficked to Europe, India and North America largely via commercial air, according to a report released by the U.S. State Department on Monday.