Structured analysis of maritime security incidents across the Indian Ocean Region
Key Insight: Maritime incidents declined by 26% in 2025, yet fatalities increased
The Centre recorded 1,428 maritime events in 2025, representing a 17% decrease from the 1,717 incidents reported in 2024. While the overall decline in incident numbers reflects increased awareness of maritime risks and improved adherence to regional advisories, the human impact worsened. In 2025, maritime incidents resulted in 1,515 fatalities (506 deaths and 1009 missing), compared to 1,418 in 2024. This divergence between reduced incident frequency and increased human loss highlights the growing influence of severe weather conditions and unsafe maritime operations. The contribution of regional authorities was evident with 8,446 people successfully rescued during the year through co-ordinated response operations by regional maritime agencies.
Key Insight: Adverse weather remained the primary driver of maritime incidents in 2025
Most Maritime Incidents in 2025 were linked to adverse weather conditions, with 319 incidents attributed to bad weather, including the sinking or capsizing of 162 vessels. Vessel operations that did not meet prescribed safety and maintenance standards remained a contributing factor, particularly among smaller vessels, with incidents involving mechanical breakdowns (52) and groundings (46). Although the overall number of incidents declined across all months, the monthly distribution closely mirrored the pattern observed in 2024. Notably, fewer incidents were recorded during historically high-risk, monsoon-driven months such as August and November, suggesting improved compliance with weather advisories, enhanced voyage planning and the positive impact of regional safety awareness initiatives.
Key Insight: Southeast Asia led maritime incident reporting in 2025
Regionally, Southeast Asia recorded the highest number of maritime incidents in 2025, reflecting both its dense maritime traffic and effective reporting and monitoring systems. West Asia reported the fewest incidents but experienced the highest number of fatalities, largely linked to irregular human migration. East Africa and South Asia recorded moderate incident levels, remaining broadly comparable to 2024. Overall, 2025 demonstrated improved operational discipline across the region, while also highlighting persistent risks from adverse weather and the disproportionate impact on smaller vessels.
The Indian Ocean Naval Symposium (IONS) is a voluntary initiative that brings together the navies of the Indian Ocean littoral states. Through dialogue, co-operation, and shared understanding, IONS fosters regional maritime security and stability across one of the world’s most strategic oceanic regions.
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