
Platforms
A unified system with simple and affordable options
Key features
End-to-end system
A fully integrated solution connecting hardware, communications and browser-based access in one seamless system.
Al & edge computing
Uses advanced algorithms to detect, classify and interpret the underwater sounds, processing data locally to reduce latency and enable faster decision-making.
Low power consumption
Engineered for low power consumption, ensuring extended operation and efficiency in remote or off-grid environments.
Easy & low-cost deployment
Available in both autonomous and cabled versions, adaptable to any operational environment.
Ocean intelligence for every mission
HT-Cable (HT-C)
FROM 8,500 EUROS/UNITHT-Cable (HT-C) is a cabled underwater acoustic monitoring platform designed for fixed or semi-fixed deployments. Connected directly to shore-based facilities, vessels or other monitoring systems, it delivers uninterrupted, high-bandwidth acoustic data flow with real-time processing for environments where continuous access is critical.
HT-Cable (HT-C)
FROM 8,500 EUROS/UNITEngineered for continuous, real-time acoustic intelligence
HT-C is a cabled underwater acoustic monitoring platform for fixed or semi-fixed deployments. Connected directly to land-based facilities, vessels or other monitoring systems, it combines continuous recording, on-device AI processing and reliable data transmission to deliver uninterrupted real-time acoustic intelligence where constant access is essential.
- Real-time detections: Continuous recording and real-time underwater acoustic processing.
- AI & edge computing: Advanced AI algorithms run on-device to detect, classify and interpret underwater sound.
- Connectivity: Reliable data transmission via ethernet cable or satellite connectivity.
- Flexible deployments: Ideal for environments that require long-term monitoring and where real-time data access is critical.
- More features: Low cost · Continuous operation · Live listen · High-reliability data link · Raw audio available.
HT-C is a cabled underwater acoustic monitoring platform for fixed or semi-fixed deployments. Connected directly to land-based facilities, vessels or other monitoring systems, it combines continuous recording, on-device AI processing and reliable data transmission to deliver uninterrupted real-time acoustic intelligence where constant access is essential.
- Real-time detections: Continuous recording and real-time underwater acoustic processing.
- AI & edge computing: Advanced AI algorithms run on-device to detect, classify and interpret underwater sound.
- Connectivity: Reliable data transmission via ethernet cable or satellite connectivity.
- Flexible deployments: Ideal for environments that require long-term monitoring and where real-time data access is critical.
- More features: Low cost · Continuous operation · Live listen · High-reliability data link · Raw audio available.
HT-Spotter (HT-S)
FROM 22,000 EUROS/UNITHT-Spotter (HT-S) is a solar-powered buoy designed for distributed underwater acoustic monitoring. Built for moored or free-drifting deployments, it combines on-device AI, edge processing and cellular or satellite connectivity to deliver real-time underwater acoustic intelligence and metocean data in remote and dynamic marine environments. It can also support up to three subsurface sensors through Smart Mooring nodes, combining water-column data with surface measurements for a more complete understanding of the operating environment.
HT-Spotter (HT-S)
FROM 22,000 EUROS/UNITEngineered for distributed acoustic intelligence networks
HT-S is a solar-powered autonomous buoy for distributed underwater acoustic monitoring. Designed for moored or drifting deployments, it combines on-device AI, edge computing, real-time detections, and cellular or satellite connectivity to deliver underwater acoustic intelligence alongside metocean surface measurements in remote and dynamic marine environments.
- Real-time detections: On-device sound monitoring and processing for real-time detection and classification of underwater acoustics.
- Moored or drifting: Flexible deployment options to match mission area, coverage needs and operating conditions.
- AI & edge computing: Advanced AI algorithms run on-device for fast detections, lower bandwidth use and more autonomous operation.
- Connectivity: Cellular connectivity with satellite fallback for remote offshore locations without coverage.
- More features: Low cost · Deploy at scale · Rugged & reliable · Surface metocean data · Flexible sensors
HT-S is a solar-powered autonomous buoy for distributed underwater acoustic monitoring. Designed for moored or drifting deployments, it combines on-device AI, edge computing, real-time detections, and cellular or satellite connectivity to deliver underwater acoustic intelligence alongside metocean surface measurements in remote and dynamic marine environments.
- Real-time detections: On-device sound monitoring and processing for real-time detection and classification of underwater acoustics.
- Moored or drifting: Flexible deployment options to match mission area, coverage needs and operating conditions.
- AI & edge computing: Advanced AI algorithms run on-device for fast detections, lower bandwidth use and more autonomous operation.
- Connectivity: Cellular connectivity with satellite fallback for remote offshore locations without coverage.
- More features: Low cost · Deploy at scale · Rugged & reliable · Surface metocean data · Flexible sensors
HT-Vessel (HT-V)
FROM 28,500 EUROS/UNITHT-Vessel (HT-V) is a solar-powered, rapidly deployable autonomous platform for mobile underwater acoustic monitoring. Combining on-board AI processing, real-time detections and satellite connectivity, it delivers continuous ocean intelligence for remote missions and dynamic marine environments.
HT-Vessel (HT-V)
FROM 28,500 EUROS/UNITEngineered for ocean-scale acoustic intelligence
HT-V is a solar-powered autonomous listening station built for mobile underwater acoustic monitoring. With on-board AI processing, real-time detections and satellite connectivity, it enables persistent, wide-area ocean coverage at lower operational cost.
- Real-time detections: Continuous on-board underwater acoustic processing and real-time alerting.
- 6+ months endurance: Solar-powered operation built for long missions and wide-area coverage.
- Mission dashboard: A live operational dashboard for mission planning and situational awareness.
- Satellite connected: Secure, low-latency audio streaming via Starlink connectivity.
- More features: Low cost · Autonomous navigation · Live listen · Storm ready · Flexible sensors
HT-V is a solar-powered autonomous listening station built for mobile underwater acoustic monitoring. With on-board AI processing, real-time detections and satellite connectivity, it enables persistent, wide-area ocean coverage at lower operational cost.
- Real-time detections: Continuous on-board underwater acoustic processing and real-time alerting.
- 6+ months endurance: Solar-powered operation built for long missions and wide-area coverage.
- Mission dashboard: A live operational dashboard for mission planning and situational awareness.
- Satellite connected: Secure, low-latency audio streaming via Starlink connectivity.
- More features: Low cost · Autonomous navigation · Live listen · Storm ready · Flexible sensors
Access instant ocean intelligence through our intuitive dashboard

Grid management
- See all deployed Hydrotwins at once with real-time updates.
- Spot issues instantly through clear visual alerts.
- Filter more than one location at the same time.
- Select a specific unit or view all active or inactive units.

From detection to audio
- Open any unit to view its real-time acoustic metrics summary.
- Listen to the live audio instantly for a fast confirmation.
- Go from a detection to the respective audio file and spectrogram within a few clicks.
- Deep dive on metocean data.
All the data you need, a few clicks away
Live Dashboard
Access real-time detections, audio, sound metrics, metocean data and system status through a single interface.
AI Classification
Automatically distinguish anthropogenic noise from biological sounds using our AI models. Currently detecting vessels, whales and dolphins.
Data Analysis
Process existing third-party acoustic datasets through HT-Intelligence, without deploying new hardware.
HT-Intelligence Price
Basic Plan*
250 € per unit/month
2500 € per unit/year
- Full access to the data collected by your Hydrotwin units.
- AI detections and acoustic analytics for 3 main classes (dolphis, whales & vessels).
- Unlimited historical data storage while your subscription is active.
- Real‑time device status (energy, storage, etc.).
- Device setup and firmware updates.
- Custom integrations with your internal tools and data lake (on request).
- Commercial and technical support available during business hours (support@blueoasis.pt).
- Communication costs included.
- Hardware devices are not included in the subscription, but are available to purchase or rent.**
- Custom AI models not included in the subscription, but can be contracted as additional services.**


















