====Beautemps Beaupré====
===Sondeur de sédiments===
Simrad SBP 120 (3 -> 7 kHz)
===Sondeur multifaisceau===
Simrad EM120 (12 kHz)

====Pourquoi Pas ?====
===Sondeur de sédiments===
Echoes 3500 (1.7 -> 5.3 kHz)

(chirp sonar Echoes 3500 emitting chirp pulses with a frequency modulation varying from 1.7 to 5.3 kHz)

===Sondeur multifaisceau===
Reson Seabat 7150 (12 / 24 kHz)

====Marion Dufresne old====

Thales Sea Falcon 11 multibeam sonar swath-mapper (previously named TSM 5265B), 5
transmit beams – central frequency 12 kHz, frequency separation 300 Hz, 120°-150°
beam angle. Bathymetry and backscatter data acquired. In water depths shallower than
~800 m operation was switched to single beam (from 5-beam) transmission because of
the higher ping rates.

bandwidth (common receive array with multibeam), beam width 7.4° (transmission) &
5.6° (reception); monitor record on 50 cm thermal paper roll.

Analogue 3.5 kHz chirp sub-bottom profiler, ~25° beam, Raytheon Line Scan Recorder
(46 cm EPC roll chart)
====Marion Dufresne new====