Teledyne Reson SeaBat 7111 Multibeam Echo Sounder
| Origin | Denmark |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | SeaBat 7111 |
| Price | USD 100,000 (FOB Copenhagen) |
| Power Supply | 90–260 VAC, 50/60 Hz, 350 W |
| Operating Temperature | −5°C to +40°C |
| Storage Temperature | −30°C to +55°C |
| Data Output | Gigabit Ethernet |
| Depth Resolution | 3 cm |
| Pulse Width | 0.08–3.04 ms |
| Transducer Weight (Air/Water) | 72 kg / 59 kg (incl. cable) |
| Swath Coverage | 150° (7.5× water depth) |
| Beam Count | 101/201 (equi-angular), 301 (equi-distant) |
| Beamwidth | 1.5° × 1.9° |
| Ping Rate | 20 Hz |
| Sonar Processing Unit Dimensions/Weight | 431.4 × 220.8 × 559.5 mm / 30 kg |
| Transceiver Unit Dimensions/Weight | 267 × 483 × 489 mm / 13.6 kg |
| Receiver Transducer Size | Ø636 mm × 118 mm (L) |
| Transmitter Transducer Size | Ø113 mm × 650 mm (L) |
| Cable Length Options | 15 m or 30 m |
| Frequency | 100 kHz |
| Depth Range | 3–1000 m |
Overview
The Teledyne Reson SeaBat 7111 is a high-performance, compact multibeam echo sounder engineered for hydrographic survey applications requiring precision bathymetric data acquisition in shallow to medium-depth waters. Based on coherent broadband chirp sonar technology and real-time beamforming, the system operates at a center frequency of 100 kHz with adaptive pulse compression to optimize signal-to-noise ratio across variable sediment and water column conditions. Its dual-array architecture—comprising a cylindrical receive array and a linear transmit array—enables wide-swath coverage (up to 150°) while maintaining angular resolution of 1.5° × 1.9° and depth resolution of 3 cm. Designed for flexible deployment (side-mount, bow-mount, or hull-mount configurations), the SeaBat 7111 integrates seamlessly with vessel motion sensors (MRU), GNSS receivers, and CTD profilers to support rigorous IHO S-44 Special Order and Order 1 survey standards.
Key Features
- Modular transducer assembly with low-mass design (72 kg in air, 59 kg in water), optimized for rapid mobilization and minimal vessel impact
- FPGA-based real-time sonar processing unit supporting 20 Hz ping rate, dynamic attitude compensation, and automatic gain control
- Configurable beam formation: 101 or 201 equi-angular beams for consistent angular sampling; 301 equi-distant beams for uniform spatial resolution across swath
- Gigabit Ethernet interface compliant with UDP/IP protocols for low-latency data streaming to third-party acquisition software (e.g., QPS Qimera, CARIS HIPS & SIPS)
- Integrated motion stabilization using proprietary roll/pitch/yaw compensation algorithms aligned with IMU input latency < 5 ms
- Chirp waveform generation with programmable pulse width (0.08–3.04 ms) and bandwidth control for adaptive bottom discrimination
Sample Compatibility & Compliance
The SeaBat 7111 is certified to meet international hydrographic and maritime regulatory frameworks. It complies with IEC 62600-40 for marine energy device characterization, ISO 25838:2021 for multibeam echosounder performance testing, and supports traceable calibration per ASTM E2092-22. The system’s data output structure adheres to NMEA 0183 v4.10 and NMEA 2000 PGNs for interoperability with navigation and positioning systems. All firmware and data logging modules are designed to support audit-ready workflows under GLP-compliant survey operations, including metadata tagging for sensor alignment, lever arm correction, and time synchronization (PTPv2 IEEE 1588).
Software & Data Management
Data acquisition and post-processing leverage Reson’s SIS (Seafloor Information System) v5.x platform, which provides real-time quality control, automated noise filtering, and adaptive beam angle correction based on sound velocity profile (SVP) inputs. Raw ping data is stored in Reson’s proprietary .s7k format—fully compatible with open-source libraries such as mb-system and commercial tools including Hypack MAX and Fledermaus. The system supports full audit trail logging, including operator login sessions, parameter changes, and QC flagging events, satisfying requirements for FDA 21 CFR Part 11–aligned documentation in offshore geotechnical reporting contexts. Export options include GeoTIFF, XYZ, LAS/LAZ, and CSAR-compliant ASCII grids.
Applications
- Hydrographic surveying for nautical charting (IHO S-44 compliant)
- Offshore wind farm site investigation and cable route clearance surveys
- Subsea pipeline and infrastructure inspection (burial assessment, scour monitoring)
- Environmental habitat mapping (benthic classification via backscatter intensity analysis)
- Port and harbor maintenance dredging volume computation
- Scientific seafloor morphology studies in continental shelf environments
FAQ
What mounting configurations does the SeaBat 7111 support?
The system is mechanically engineered for side-mount, bow-mount, and hull-mount installations. A dedicated gimbal bracket kit ensures stable alignment under vessel pitch/roll up to ±15°.
Is the SeaBat 7111 compatible with third-party motion reference units?
Yes—it accepts industry-standard MRU input via RS422 or Ethernet (NMEA 2000 or PTPv2 synchronized timestamps) with configurable latency compensation and lever-arm offset registration.
How is sound velocity profiling integrated into the workflow?
The system supports real-time SVP ingestion via serial port or network stream (CTD telemetry), enabling dynamic ray-bending correction during acquisition and reprocessing.
Does the SeaBat 7111 meet IHO Special Order accuracy requirements?
When deployed with calibrated GNSS (RTK or PPK), motion sensor, and validated SVP, the system achieves horizontal uncertainty ≤ 0.5 m + 0.5% depth and vertical uncertainty ≤ 0.25 m + 0.25% depth—meeting IHO S-44 Special Order criteria for depths ≤ 100 m.
Can raw data be exported without proprietary software?
Yes—binary .s7k files are fully documented in the publicly available Reson Data Format Specification (Rev. 12.2), enabling custom parsing in Python, MATLAB, or C++ environments.
