Marine Instruments is a Spanish technology company specializing in advanced electronic systems for marine and underwater environments. Founded in 2003 and headquartered in Galicia, it is a global leader in smart fishing technologies, ocean monitoring, and dual-use solutions for security and sustainability.

A core strength is underwater acoustics, with solutions covering both active and passive sensing. Its active acoustic buoys, widely used in tropical tuna fisheries, emit sonar pulses to estimate fish biomass beneath drifting objects. Equipped with solar power, satellite communications, and AI-driven data analysis, they deliver real-time information to optimize fishing efficiency and sustainability. These same buoys are now being adapted for subsea infrastructure surveillance and maritime security missions.

On the passive side, the Marine Acoustic Smart System (MASS), originally developed for aquaculture, detects, processes, and identifies the natural sounds produced by shrimp during feeding. This enables precise feed management and waste reduction. Adapted versions of this technology support stealth monitoring of underwater anomalies without emitting signals, ideal for protecting critical infrastructure.

Complementing these systems is the M5D-Airfox, an unmanned aerial vehicle for maritime and coastal surveillance, currently in service on the Offshore Patrol Vessels (OPVs) of the Spanish Navy. It supports missions such as maritime surveillance, anti-smuggling, and environmental monitoring.

Marine Instruments delivers innovative, reliable, and mission-ready solutions for both civilian and defense applications worldwide