There were 3 main objectives for the trials cruise: Testing of the Autosub6000 AUV, theudHyBIS system (both supported by personnel from the National Oceanography Centre,udSouthampton), and acoustic and satellite telemetry systems (Proudman OceanographicudLaboratory, Liverpool). Specifically, the Autosub6000 trials were to test: the AUV, its systemsudand control to as deep as possible up to 6000 m, a new collision avoidance system based onudscanned sonar collision avoidance sensor, and recently installed sensors (dual CT, LSS EHudprobe, magnetometer, Multibeam sonar sensors). The objectives of the HyBIS trials were toudtest the video guided grab system to as deep as possible, and to gain further operationaludexperience. The objectives of the telemetry systems trials were to develop and test remoteudmeasurement technologies, deep water communication systems and a compact version of theudMYRTLE (multi-year return tide level equipment) long term deep water recoverable lander.udThe cruise began with initial tests of the Autosub6000 AUV in the Celtic deep, followed byuddeep tests of the AUV to 5600m on the Iberian Abyssal plain. The majority of the work for theudAutosub6000, HyBIS and the POL telemetry tests were carried out further south over andudaround the Casablanca seamount. A high percentage of the tests were successful, withudAutosub6000 reaching a depth of 5600m.
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