“An army that doesn’t look like one.” Fishing boats repurposed as coercive instruments of state power in disputed waters.
Executive Summary
Maritime militias are state-organized paramilitary forces embedded within civilian maritime fleets — fishing vessels, cargo ships, and supply boats — that conduct surveillance, harassment, and territorial-assertion operations under the cover of commercial activity. China’s People’s Armed Forces Maritime Militia (PAFMM) is the most documented example, operating in close coordination with the People’s Liberation Army Navy (PLAN) and the China Coast Guard (CCG). Between 2024 and 2026, its operations around the Philippines’ Second Thomas Shoal and near Taiwan became a defining flashpoint of the gray zone era.
The Strategic Mechanism
The militia’s power derives from layered deniability:
- Civilian camouflage: Vessels carry no military insignia, enabling plausible deniability under international law
- The three-body system: PAFMM, CCG, and PLAN operate as coordinated echelons — militia provokes, coast guard enforces, navy backs
- AIS manipulation: Vessels routinely “go dark,” change vessel identifiers, or broadcast false positions to evade tracking
- Swarm tactics: Dozens of vessels encircle contested reefs or shadow foreign ships to deny access through mass rather than firepower
- Threshold management: Operations are calibrated to stay below the level that would trigger a formal military response from adversaries
Market & Policy Impact
- Resource denial: EEZ encroachment by militia fleets blocks foreign fishing and energy exploration, costing littoral states billions in unrealized resource revenue
- Insurance risk: Commercial vessels operating in contested South China Sea lanes face elevated hull and cargo insurance premiums
- Alliance stress-testing: Repeated Philippine confrontations have forced Washington to clarify — and re-clarify — the scope of its Mutual Defense Treaty obligations
- Coast guard militarization: Vietnam, the Philippines, and Japan are accelerating coast guard procurement and legal frameworks to counter militia tactics
- Satellite monitoring demand: Commercial GEOINT providers like Planet Labs and Maxar have expanded maritime monitoring contracts with Indo-Pacific governments
Modern Case Study: Second Thomas Shoal, 2024–2025
The BRP Sierra Madre — a deliberately grounded Philippine Navy ship at Second Thomas Shoal — became the most contested 100 meters of ocean in the world. Through 2024 and into 2025, Chinese maritime militia vessels, backed by CCG cutters, conducted systematic water-cannon attacks, laser-dazzling, and ramming maneuvers against Philippine resupply vessels attempting to deliver food and ammunition to the skeleton crew aboard. Manila documented over 40 significant incidents in 2024 alone. The operations were precision-calibrated: sufficient to strangle the outpost, insufficient to trigger the U.S.–Philippines Mutual Defense Treaty. The U.S. State Department repeatedly affirmed that treaty coverage extended to Philippine vessels in the area, while Beijing denied any hostile intent, characterizing its actions as “law enforcement.” The episode illustrated the militia’s core utility: maximum territorial coercion, minimum escalation risk.