Every meal consumed on the island reflects an intricate, fragile maritime supply chain. Puerto Rico imports upwards of 85% of its caloric intake, making cargo logistics an existential concern. A critical component of this network marked its tenth year of operation in 2026: weekly container routes operated between Jacksonville, Florida, and San Juan Harbor.
These specialized vessels, among the first dual-fuel liquefied natural gas container ships deployed in the trade, deliver medical goods, frozen meats, construction materials, and baby formula like clockwork. Twice a week, massive gantry cranes at the Isla Grande terminal work around the clock to offload hundreds of containers destined for distribution centers across the island.
While logistics firms highlight the reliability of these ocean bridges, economists and local business leaders emphasize the inherent precarity. Under the Merchant Marine Act of 1920 (the Jones Act), cargo transported between two U.S. ports must be carried on ships built, owned, and flagged in the United States and crewed by American mariners. The mandate protects national defense maritime readiness, but critics note that it severely inflates shipping rates, trickling down into grocery checkout lines where staples like milk, eggs, and produce cost substantially more than in mainland hubs.
