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The high-level structure diagram in the picture below shows how the three system layers are connected to each other and the devices they interface. The diagram is simplified and only shows the main system structure. Level 3 is intended for scientific use and does not hold functions that are important for navigation, collision avoidance or system monitoring. The system is powered by level 1, which means that a decision can be made to deactivate the level 3 system. This can either be performed automatically if energy must be conserved to maintain operation of safety-critical functions, or it can be done from the remote operating station. The Technologic Systems TS-7970 computer that level 3 is built around will be interfaced with the ADCP, fish tracker, weather mast, CTD, oxygen sensor and ECO Triplet.