Single beam echosounders

The Echologger and Knudsen single beam echosounders are ultra compact and provide accurate data for bathymetric surveys. These sensors are the best tool for accurate bathymetry operations (ships, USVs, ROVs) and can be used for a wide range of applications.

Sondeurs monofaisceaux des gammes Echologger et Knudsen

/ Our products

Echologger 30/200 kHz

Echologger 400 kHz

Mini Sounder Knudsen

Sounder 1612 Knudsen


30/200 kHz

400 kHz

24/210 kHz

24/210 kHz


740 kg

300 kg

3 kg

9 kg

Min. - max. range

0.5/200 m

0.15/200 m

2,000 m

2,000 m+


1 mm

1 mm

1 cm

1 cm

High-precision single beam echosounders provide reliable water level data for bathymetric surveys requiring basic lightweight equipment.

These sensors are often combined with other equipment such as GNSS receivers, as well as software suites for data acquisition, processing and analysis: QINSY.


Discover our services

Our philosophy is to support our clients at all key stages of their projects.


A wide choice of rental sensors and acquisition systems, systems integration services, tailor-made training and technical support. Our rental catalog also includes complete systems, combining sensors of different technologies and from the main world-leading manufacturers.


Choosing Cadden as your project partner allows you to benefit from relevant technical advice, before, during, and after delivery. We accompany you during installation and provide technical support, even after the end of the equipment warranty.


Our trainers have advanced knowledge of all the solutions provided. Thanks to a close partnership with all of our suppliers, our training team will provide you with tailor-made solutions, training adapted to your applications.