CHCNAV HN-400M Dual-Frequency Multibeam Echosounder

Dual Frequency Performance

• 550 kHz for high-resolution shallow-water surveys
• 400 kHz FM Chirp for deeper and turbid waters
• One system for inland, coastal and harbour surveys
• Seamless transition between frequencies
• Optimised for accuracy across varying conditions
  

High-Precision Motion Compensation

• Integrated 0.03° INS-based IMU
• Maintains accuracy in rough sea conditions
• Compensates for vessel roll and pitch
• Reduces data drift and survey errors
• Reliable performance up to Sea State 3
  

Wide Swath Coverage

• 145° swath coverage
• Scans up to 6× the water depth
• Covers more seabed in a single pass
• Reduces the number of survey lines
• Lowers survey time and operating costs
  

Calibration-Free Installation

• No patch test calibration required
• Ready to survey straight out of the box
• Fast deployment for vessel and USV operations
• Simplifies installation and setup
• Maximises time spent surveying
  

Extended Depth Range

• Survey depths up to 200 m
• Suitable for inland, coastal and offshore projects
• Covers nearshore and deep-water environments
• Greater versatility than shallow-water systems
• Reliable performance across a wide range of applications