A second Iranian naval vessel is hovering just outside Sri Lanka’s territorial waters near Colombo, urgently requesting docking permission one day after a US submarine torpedoed sister ship IRIS Dena, killing 87 sailors and leaving dozens missing.
Incident Background
IRIS Dena sank on March 4, 2026, 40 nautical miles off Galle following a confirmed US fast-attack submarine strike, with Sri Lanka rescuing 32 survivors and recovering 87 bodies from an estimated 180 crew-sparking global outrage over the warship’s return from India’s IFR 2026 naval review.
Now, this logistical pipe-laying vessel (possibly IRIS Bushehr), carrying 100+ crew, reports engine trouble and seeks Colombo port refuge, as confirmed by Media Minister Nalinda Jayatissa and MP Namal Rajapaksa on March 5.
President Anura Kumara Dissanayake convened emergency cabinet and defense talks to assess risks.
International Conventions at Stake
Under UNCLOS Article 98, Sri Lanka bears a duty to render assistance to distressed vessels on the high seas or in its EEZ, prioritizing life-saving without nationality discrimination-refusal risks humanitarian backlash akin to 1971’s Pakistani aircraft refueling precedent cited by Rajapaksa.
Customary maritime law permits innocent passage through territorial seas (Article 17) for non-threatening ships, but warships require explicit prior authorization (Article 19); denial could invite Iranian protests or IMO scrutiny. Granting entry aligns with Sri Lanka’s non-aligned policy but invokes Vienna Convention on Diplomatic Relations protections for crew as diplomatic assets post-Dena attack.
Sri Lanka’s Legal Duties and Options
Sri Lanka must evaluate threats under UNCLOS Article 19(2), barring entry if passage prejudices peace-yet engine failure frames this as distress, not aggression. Legally, Colombo can:
- Approve limited humanitarian docking with escorted repairs (preferred under SAR obligations).
- Divert to international waters for third-party aid, avoiding entanglement.
- Divert to international waters for third-party aid, avoiding entanglement.
Non-compliance risks ITLOS arbitration; precedent favors aid, as in 2001 USS Cole Yemen refueling despite tensions.
Strategic Risks to Sri Lanka
This poses dangers: docking invites US surveillance or preemptive strikes in territorial waters (violating UNCLOS Article 88 high-seas peace), escalates Iran-US proxy war to Colombo’s doorstep, and strains India-US ties post-IFR.
Economic fallout threatens tourism and shipping lanes; opposition leader Sajith Premadasa demands transparency on defenses.
Navy patrols intensify, balancing neutrality amid Middle East spillover-refusal safeguards security but damages humanitarian credentials.
