Royal Navy Crowsnest Airborne Surveillance Helicopters Deployed to Cyprus

Key Takeaways

• Merlin HM2s equipped with Crowsnest radar deployed to Cyprus
• System tracks low‑flying drones up to 100 miles over water
• Complements RAF Protector UAVs, boosting regional ISR coverage
• Full Operating Capability reached March 2025, replacement planned 2029
• Deployment strains limited Merlin fleet, may affect carrier operations

Summary

Royal Navy Merlin HM2 helicopters fitted with the Crowsnest airborne surveillance and control system have departed RNAS Culdrose for a self‑deployed deployment to Cyprus. The Thales Searchwater pulse‑Doppler radar can detect low‑flying UAVs such as Shahed drones at ranges up to roughly 100 miles over water. Crowsnest achieved Full Operating Capability in March 2025 and now augments the RAF’s Protector MQ‑9B ISR platform stationed at RAF Akrotiri. The RN plans to replace the system with a UAS‑borne radar by 2029 to free Merlin airframes for anti‑submarine duties.

Pulse Analysis

The Crowsnest airborne surveillance and control (ASaC) suite represents a significant upgrade to the Royal Navy’s maritime situational awareness. Built around Thales’ Searchwater pulse‑Doppler radar, the system excels at filtering sea clutter, allowing operators to lock onto low‑altitude, slow‑moving UAVs well beyond the horizon. By operating from Merlin HM2 helicopters, the UK gains a flexible platform that can be repositioned quickly across the Eastern Mediterranean, filling gaps left by ship‑borne sensors and providing a persistent eye over contested waterways.

In Cyprus, Crowsnest works hand‑in‑hand with the RAF’s Protector MQ‑9B SkyGuardian, which delivers long‑endurance ISR and strike capabilities. Together they create a layered detection network: the helicopter’s radar pinpoints drone incursions at up to 100 miles, while the Protector validates targets with high‑resolution imagery and can engage if required. This synergy reduces reliance on static ground radars, improves response times, and supports ongoing operations such as anti‑ISIS missions under Operation SHADER.

Looking ahead, the Royal Navy intends to replace Crowsnest with an unmanned‑air‑system‑borne radar by 2029, a move driven by the need to return valuable Merlin Mk2 airframes to their primary anti‑submarine role. The shift mirrors a broader defense trend toward autonomous sensor platforms that lower crew workload and operational costs. As the UK modernises its maritime ISR architecture, the Cyprus deployment serves as a real‑world testbed, informing future integration of UAS radar kits across the fleet and ensuring the nation maintains a credible edge in detecting emerging low‑tech drone threats.