Timeline for SEA Ltd
Demonstrated underwater-communications planning software
Autonomous Systems: Land & Sea: Mentioned in: UK to lead three AUKUS undersea payloadsBackground
SEA Ltd demonstrated its Acoustic Deployment Environment Planning Tool at Maritime Big Play off San Diego in autumn 2026, funded by UK Defence Innovation. The tool predicts how well underwater communications will work from environmental data and acoustic modelling.
SEA, or Systems Engineering & Assessment, was founded in 1987 and joined Cohort plc in 2007. It is based at Beckington near Frome, with sites in Somerset, Bristol and Devon. Its work covers sonar and anti-submarine systems for the Royal Navy and export navies.
Britain led the anti-submarine strand at Maritime Big Play and will lead three AUKUS underwater-drone payloads from 2027.
What did SEA Ltd show at Maritime Big Play?
Who owns SEA Ltd in Frome?
What does SEA Ltd stand for?
Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Updated 8 November 2026. Editorial standards.