ECHOES 3500 T1, T3 and T7


High penetration sub-bottom profilers

Hull or pole mounted

20 cm resolution

Frequency range: 1.7-5.5 kHz

ECHOES 3500 sub-bottom profilers family is the reference full ocean depth solution for oceanographic and hydrographic vessels. Based on highly reliable powerful 3-transducer (ECHOES 35000 T3) or 7-transducer (ECHOES 3500 T7), combined with low frequency wide band chirp technology, and provided with DELPH SEISMIC acquisition software, it becomes a full-feature survey tool with impressive high-resolution deep sub-bottom profiling.


  • High level data quality

  • Large bandwidth (>100%)

  • Stealth True flat spectrum

  • CHIRP Compression offering best resolution/penetration compromise

  • High Signal-to-noise ratio

  • State of the art 24-bits dynamic

  • Compact and robust

  • One solution for every application

  • Delph Acquisition and Post-Processing Software insiden


  • True flat spectrum, high-directivity CHIRP Signal

  • Full package: antenna, rugged rack, laptop PC

  • Stealth Easy pole-mounted solution

  • Databasing of all information

  • Worldwide iXBlue network






Operational depth from full ocean depth (T7) to continental shelf (T3) and shallow water (T1)
Frequency range 1.7 kHz - 5.5 kHz
Equivalent source level (ref 1μPa@1 m) 224dB (T1@2kVA), 227dB (T3@2kVA), 235dB (T7@4kVA)
Resolution 20 cm
Frequency response Flat spectrum
 Digital data format 24 bit raw data / Segy 32 bits floating point
Available pulses AM-FM / User-designed and chirp library
Directivity 20° (T7) ; 30° (T1) (Frequency dependant)
Typical mount Pole-mounted / over the side Pole or hull-mounted
Transmission power 2 kVA - 4 kVA (6 kVA option) 1