IN–SLN DIVEX 2026 refers to the India–Sri Lanka Navy Diving Exercise 2026. It is a bilateral naval diving exercise between the Indian Navy and the Sri Lanka Navy, focused on underwater operations, diving coordination, submarine rescue support, search, rescue and salvage capabilities.
The 4th edition of IN–SLN DIVEX was conducted at Colombo, Sri Lanka, in April 2026. The Indian Navy confirmed that the exercise was held at Colombo and involved professional diving cooperation between both navies. The exercise saw participation from the Indian Navy’s INS Nireekshak, a Diving Support and Submarine Rescue Vessel.
Key Details
- Exercise: IN–SLN DIVEX 2026
- Participants: Indian Navy and Sri Lanka Navy
- Edition: 4th edition
- Location: Colombo, Sri Lanka
- Time: April 2026
- Indian Navy platform: INS Nireekshak
- Focus area: Diving, underwater search, rescue, salvage and interoperability
INS Nireekshak
INS Nireekshak is a specialised Indian Navy vessel used for diving support and submarine rescue operations.
Its role in the exercise is important because diving and submarine-rescue operations require highly specialised skills, equipment and coordination.
Through INS Nireekshak, the Indian Navy demonstrated capabilities related to:
- deep diving
- underwater search
- salvage operations
- submarine rescue support
- diver training
- underwater technical coordination
Objective
The main objective of IN–SLN DIVEX 2026 was to improve interoperability between Indian and Sri Lankan naval diving teams.
The exercise focused on:
- underwater search and rescue
- salvage missions
- diving procedures
- emergency response
- professional exchange between naval divers
- coordination in maritime contingencies
Such exercises help both navies operate together during real-life emergencies such as ship accidents, submarine distress, underwater obstruction, port accidents or disaster-response operations.
Significance for India–Sri Lanka Relations
IN–SLN DIVEX strengthens India–Sri Lanka maritime cooperation in the Indian Ocean Region.
Its significance lies in:
- improving trust between the two navies
- strengthening operational coordination
- supporting maritime safety around Sri Lanka
- improving disaster and emergency response
- enhancing India’s role as a first responder in the region
- deepening defence cooperation with a key Indian Ocean neighbour
Sri Lanka’s location near major sea lanes makes naval cooperation with India strategically important.
Link with Maritime Security
Diving exercises may look technical, but they are important for wider maritime security.
They support:
- port security
- underwater inspection
- rescue operations
- wreck removal
- mine-like object identification
- maritime disaster response
- submarine safety
- protection of critical maritime infrastructure
In the Indian Ocean, where shipping lanes, ports, undersea cables and naval activity are increasing, underwater capability has become more important.
Strategic Importance
India and Sri Lanka are close maritime neighbours. Their naval cooperation matters because of:
- shared Indian Ocean geography
- proximity to major shipping routes
- increasing Chinese presence in the region
- need for maritime domain awareness
- disaster-response cooperation
- counter-smuggling and security coordination
- India’s SAGAR/MAHASAGAR vision
IN–SLN DIVEX fits into India’s wider effort to strengthen maritime partnerships with Indian Ocean littoral countries.
Conclusion
IN–SLN DIVEX 2026 was the 4th India–Sri Lanka Navy Diving Exercise, held in Colombo in April 2026, with the participation of INS Nireekshak. The exercise is significant because it strengthens underwater operational cooperation, search and rescue capability, salvage preparedness and maritime trust between India and Sri Lanka. It reflects India’s growing focus on practical naval cooperation with neighbours in the Indian Ocean Region.
