
HD-MAX Ⅱ Hydrographic Solution
HD-MAX Ⅱ dual-frequency echo sounder redefines underwater surveying. Its enhanced host unit is water-resistant, portable, and offers versatile interfaces. The integrated temperature sensor in the transducer enables precise sound velocity calibration, and the fully automated algorithm tackles challenging terrains. Ideal for a wide range of underwater environments, including dredging, siltation, high sediment areas, and deep waters, HD-MAX Ⅱ is the unrivaled choice for hydrographic professionals.
Unmatched Accuracy & Efficiency
Compatible with all brands base stations and terminal equipment, it provides millions of concurrent users server capacity enabling services varying from engineering to civilian applications.


Seamless User Experience
Integrated software streamlines your workflow. A bright 15″ display provides a clear view of data, while intuitive buttons offer easy control. 128GB+1TB storage with Windows 10 ensures efficient data processing.
Built for Tough Conditions
The IP66-rated housing protects against harsh environments. Its lightweight, portable design facilitates easy transport, and the sturdy build ensures long-lasting durability. Versatile connectivity options include PPS, Trigger support, and multi-format data output for effortless data sharing.

Detailed Specifications
High Channel: 100kHz ~ 1MHz
Low Channel: 10kHz ~ 50kHz
Frequency
0.15 ~ 300m @200kHz
1~ 2000m @24kHz
Depth Range
±0.01m ± 0.1% of depth @200kHz
±0.1m ± 0.1% of depth @24kHz
Accuracy
Standard NMEA 0183, DESO 25, ODOM, Knudsen, Bathy, Echotrac
Output Data Format
128GB + 1TB SSD
Storage
PPS*1, Trigger*1, RJ45*1, RS232*3, USB*3, HDMI*1, Transducer*1, Power*1
Interfaces