The SOUTH T400S is a high-performance multibeam echo sounder system designed for precise bathymetric surveying and underwater mapping. Compact, lightweight, and fully integrated, it is ideal for deployment on USVs such as the SOUTH Aqua M20 and Aqua M20 Pro.
The T400S delivers advanced multibeam performance in a portable and efficient design. With 512 sounding beams and a 400 kHz frequency, it provides high-resolution seabed mapping and accurate depth measurement across a wide swath.
Its integrated IMU eliminates the need for complex calibration procedures, simplifying setup and reducing survey time. The system supports both CW and FM signal processing, ensuring stable and reliable performance even in challenging water conditions.
With swath coverage up to 140° and a depth range of approximately 0.2 m to 150 m, the T400S is suitable for a wide range of hydrographic applications including rivers, ports, reservoirs, and coastal environments.
Designed for efficiency, the system is lightweight and can be operated by a single user, making it ideal for integration on USV, ROV, and AUV platforms. Low power consumption also allows operation using battery-based systems in the field.
Applications:
– Bathymetric surveying
– River, lake, and reservoir mapping
– Coastal and harbor surveys
– Dredging and sediment monitoring
– Pipeline and underwater inspection
– USV-based hydrographic operations
Why It Matters: Multibeam systems like the SOUTH T400S significantly increase survey efficiency by capturing thousands of depth points in a single pass. Compared to single-beam systems, it provides full seabed coverage and detailed terrain models.
At GeoExpert, we integrate systems like the T400S with SOUTH Aqua USVs to deliver complete, high-accuracy hydrographic solutions tailored to modern survey requirements.
Key features
- Multibeam system with 512 beams for high-density data acquisition
- 400 kHz frequency for high-resolution shallow-water surveys
- Up to 140° swath coverage for efficient area mapping
- Integrated IMU – no calibration required
- Compact and lightweight design for USV integration
- Supports side scan functionality
- Real-time roll stabilization for improved data accuracy