The hyperbaric testing workshop manages and implements three high-pressure chambers of different sizes and features to simulate extreme depths (greater than 10,000 m). They are filled with oil, freshwater or seawater, and regulated for pressure and temperature.
The facilities include:
1,000 bars TDI
1,000 bars with viewport
0.07 metres between viewport or 0.08 metres
Temperature regulation (°C)
-20 °C to +40 °C
-20 °C to +40 °C
Electrical and hydraulic
Freshwater, seawater, oil or Mayoline
The temperature-regulated climatic chamber is used for:
The French Oceanographic Fleet has two water-cooled engine test benches for testing under load from various actuators.
10 kW bench:
1 kW bench
The indoor test tank is used to test and validate medium-sized robotic systems (ROVs, underwater manipulators). It provides a work and test environment that is convivial and practical for freshwater trials. The tank is housed at the Robotique Navigation et Visions Sous-Marines Laboratory and with other IFREMER partners.
Piscator is an instrumented gantry designed for testing, calibrating and qualifying underwater equipment, in particular optical imaging (video cameras, lighting), acoustics (echo sounders, sonar) and navigation systems (inertial systems, gyroscopes, etc.). It is installed in a freshwater tank with a volume of approximately 27 m3.
Piscator is a robotic gantry with 6 degrees of freedom. It comprises 2 horizontal axes for linear movement and a vertical axis for immersion. The vertical axis is rotative and fitted with an instrumented handle possessing 2 degrees of rotative freedom.
Vortex is an adaptable submersible for testing and demonstrating underwater robotics. The system is entirely modular and can be configured either as a remotely operated vehicle (ROV) or an autonomous underwater vehicle (AUV). It offers an ideal base for developing and innovating in the field of underwater robotics.
Thanks to its Li-ion batteries and an embedded computer Vortex can be used in a tank or dock or at sea with an operational endurance of four hours. In autonomous mode Vortex communicates with the surface control room via radio at the surface and via acoustic modem underwater. The surface control room comprises the operator interface and a MIMOSA station for mission scheduling and monitoring.
The TAO workshop is concerned with computer-assisted remote underwater handling. Its purposes are:
The French Oceanographic Fleet has at its disposal acoustic measuring equipment for characterizing transducers and hydrophones, and for carrying out operations for calibrating echo sounders. It undertakes measurements on its own behalf, and places its measuring equipment at the disposal of the scientific community and industry. Depending on the frequency range, tests can be carried out at sea, in the test tank or in the Fleet’s acoustic tank.
The acoustic tank enables users to measure three parameters: sensitivity at emission and at reception, directivity using a stepping motor (resolution 0.3 °), and electrical impedance in the frequency range 8 kHz–1 MHz for loads up to 50 kg.
The associated laboratory equipment includes standard transducers, signal synthesizer, power amplifiers, weak noise voltage preamplifiers, digital oscilloscopes, and impedance bridges.
This device can be transported to the large test tank for measuring lower frequencies, starting at 1.5 kHz, and for loads up to 500 kg.