BAE has unveiled the Sea Trinity and Sea Tridon, new CIWS versions of the WW2 Bofors 40mm Mk4, at Euronaval 2026. Sea Trinity: Independent CIWS with integrated radar and fire control, intended as a Phalanx alternative. Tridon Sea: An electro-optically guided version for smaller ships. Sea Tridon Sea: containerized version for quick installation on warships, auxiliary ships or even merchant ships. All use programmable ammunition, firing up to 300 rounds per minute with 100 rounds ready. Container versions can carry 300-500 rounds. The Royal Navy already has 10 standard Mk4 guns on order for its 5 Type 31 frigates.

BAE has unveiled the Sea Trinity and Sea Tridon, new CIWS versions of the WW2 Bofors 40mm Mk4, at Euronaval 2026. Sea Trinity: Independent CIWS with integrated radar and fire control, intended as a Phalanx alternative. Tridon Sea: An electro-optically guided version for smaller ships. Sea Tridon Sea: containerized version for quick installation on warships, auxiliary ships or even merchant ships. All use programmable ammunition, firing up to 300 rounds per minute with 100 rounds ready. Container versions can carry 300-500 rounds. The Royal Navy already has 10 standard Mk4 guns on order for its 5 Type 31 frigates.