Maritime theatres are becoming more contested and technologically advanced. Nations across the globe are stepping up investment in intelligence, surveillance, and reconnaissance (ISR) to maintain situational awareness, secure territorial waters, and deter emerging threats. The Maritime ISR News Roundup 2025 provides a curated summary of the most significant ISR-related developments from the past 12 months, drawing on open-source news and government announcements from more than 25 countries. It captures how defence forces are expanding capability through both crewed and uncrewed systems, satellite and radar technology, and modernised patrol assets.

This roundup aims to:

- Offer a global overview of key ISR procurement, deployment, and innovation efforts

- Highlight national and regional trends in maritime domain awareness

- Support attendees of the upcoming Maritime ISR 2025 conference with relevant, up-to-date background information

- Promote knowledge-sharing and collaboration across the ISR community

From the UK’s seabed surveillance and India’s coastal radar expansion, to Canada’s Arctic patrol investments and Turkey’s shipborne UAV tests, the roundup shows how ISR is fast becoming a critical pillar of maritime defence strategy worldwide.