The Eastern Pacific corridor between Colombia, Ecuador, and Mexico is the primary maritime route for semi-submersible and fully submersible narco-submarines carrying cocaine northward. An estimated 90% of cocaine entering the United States by sea transits this corridor. Coast Guard, DEA, and Navy assets conduct counter-narcotics patrols across this vast area of open ocean.
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Roughly 95% of intercontinental data traffic runs through undersea fiber cables, making landing stations and shallow-water crossings a quiet but real chokepoint — the same maritime-security lens BorderTrend applies to vessel corridors. Since 2022, around ten cables serving the Baltic region have been cut, seven of them between November 2024 and January 2025, several traced to vessels with opaque or Russia/China-linked ownership dragging anchors through cable zones. Taiwan's Matsu-Dongyin cable has now been severed three times in four years, most recently in April 2026, cutting connectivity to roughly 1,500 residents.
Attribution is frequently contested — most Baltic incidents have officially been attributed to anchor-dragging rather than confirmed sabotage, though the pattern and vessel ownership have drawn sustained scrutiny from NATO and regional governments.
Note: Narco-subs and semi-submersibles do not broadcast AIS. Fishing vessels and unknown contacts require additional analysis.
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