Indian Ocean · the surround
The maritime frame is the one place where international law reliably outranks Colombo. UNCLOS, cable-cut norms, and the QUAD MDA pillar create shields; SL flag-state authority over fishers creates the exposure.
Shields
what protectsBoth India and Sri Lanka are parties to UNCLOS. The Convention frames fisher rights, EEZ boundaries, and the Palk Strait as internationalised law, not sovereign discretion.
SEA-ME-WE 6 landed at Matara, SL on 29 December 2024. Bay of Bengal cable protection is now flagged elevated-risk by Marine Policy (April 2026). The norm that cable interference triggers multi-state response is hardening.
IPMDA (May 2022) creates a shared real-time picture of IOR maritime activity. It internationalises what SL has historically framed as its sovereign fisher-enforcement zone.
Exposures
what harmsUnder UNCLOS Art 91-94, the flag/coastal state arrests, prosecutes, and detains. SL Navy retains lawful authority to arrest Tamil fishers in its waters — including under the PTA where linkage is alleged.
The Strait is 25–30 km wide at its narrowest, unavoidable for artisanal fishers, and the site of the highest per-capita fisher-arrest rate in the IOR. Structural over-exploitation compounds by year.
Bottom-trawling depletion and post-war naval restrictions have compressed northern SL Tamil artisanal fisher livelihood. Livelihood loss is a documented driver of displacement.
- Where treaty law is strongest (UNCLOS), Colombo's discretion is most constrained.
- Where chokepoints are narrowest (Palk Strait), civilian harm concentrates.
- Cable and MDA architectures internationalise the surround faster than SL can renationalise it.
The Indian Ocean legal frame is the strongest external shield the Eelam Tamil case has. The same waters are also the site of the most persistent civilian harm — Tamil fishers on both sides of the IMBL. Both are true.