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BAE Systems unveils modular 40mm naval gun family
BAE Systems has introduced a new modular family of 40mm naval gun systems at the Euronaval 2026 exhibition. The lineup, known as the Sea Tridon family, is designed to provide scalable protection against a wide range of air, surface, and shore-based threats, including missiles, drones, and uncrewed surface vessels.
The product family consists of four distinct configurations:
• Sea Tridon: Combines the Bofors 40mm gun with an integrated electro-optical fire-control system for greater operational independence. • Sea TridonC: A containerized version of the Sea Tridon designed for rapid, temporary deployment on military, government, or commercial vessels. • Sea Trinity: A complete close-in weapon system (CIWS) that integrates radar-based fire control to counter high-speed threats. • Bofors 40 Mk4 Naval Gun: A compact, lightweight option designed for integration with existing vessel combat management systems.
All systems utilize programmable 3P ammunition. The modular approach aims to allow maritime operators to select specific capability levels while maintaining commonality in training, logistics, and support.
Entities
BAE Systems · Bofors · Euronaval 2026 · Lena Gillström · Royal Navy
Claims
What the coverage asserts, and how many sources carry each claim.
- [● 3 SOURCES] The systems use programmable 3P ammunition. indomiliter.com · interestingengineering.com
- [● 2 SOURCES] Sea TridonC is a containerized version of Sea Tridon for rapid installation on various vessels. interestingengineering.com
- [○ 1 SOURCE] The Bofors 40 Mk4 can fire up to 300 rounds per minute with a 100-round internal magazine capacity. indomiliter.com
- [● 2 SOURCES] Sea Trinity is a close-in weapon system (CIWS) that uses radar fire control. interestingengineering.com
- [● 2 SOURCES] The Sea Tridon family includes the Sea Tridon, Sea TridonC, Sea Trinity, and the Bofors 40 Mk4 Naval Gun. interestingengineering.com
- [● 3 SOURCES] BAE Systems unveiled a new modular 40mm naval gun system at Euronaval 2026. indomiliter.com · interestingengineering.com
- [○ 1 SOURCE] The Royal Navy has ordered ten Bofors 40 Mk4 units since 2020 for Type 31 frigates. indomiliter.com
- [● 2 SOURCES] Sea Tridon combines the Bofors 40mm gun with an integrated electro-optical fire-control system. interestingengineering.com