Barrus' Post-Immersion Restart Technology
At Seawork 2026, Barrus will present its proven Post Immersion Restart System (PIRS®) technology, including the latest Capsize PIRS® four-stroke solution, allowing visitors to view one of the marine industry’s most advanced engine resilience systems on the Barrus stand.
Developed by the Barrus Special Products Division, PIRS® technology has been engineered for professional marine operators where reliability following capsize or submersion is critical. Originally pioneered in collaboration with UK search and rescue and defence organisations, the system enables outboard engines to be rapidly returned to service after immersion events.
The latest evolution, Capsize PIRS®, is a fully integrated, automatic system designed for modern four-stroke engines. By preventing water ingress into key internal components and integrating directly with the engine’s electronic control system, it significantly reduces the risk of water-related damage and helps maintain operational readiness in demanding marine environments.
"The system enables outboard engines to be
rapidly returned to service after immersion events."
Alongside Capsize PIRS®, Barrus will also showcase its GEN 2 FAST PIRS® technology, a further development of its immersion recovery systems. This version improves durability and serviceability while maintaining rapid post-immersion restart capability for two-stroke applications used across commercial, rescue, and specialist fleets.
Both systems will be available to view on the Barrus stand, where the team will be available to explain the engineering behind the technology and discuss its application across defence, rescue, and commercial operations.
Visitors will also be able to access a new technical whitepaper, providing deeper insight into the design principles, system architecture, and operational benefits of PIRS® technology in real-world marine environments.
Barrus continues to support operators working in high-risk marine conditions, delivering propulsion solutions designed to maximise vessel availability, resilience, and safety when it matters most.