Optimizing cognitive task load in naval ship control centres: Design of an adaptive interface

In the last 2 decades, major changes in information technology have taken place. In process control, the ongoing automation and the application of new technologies caused a radical change in the position of the operator. Combined with manning constraints, and the ever increasing pressure to maximize the operational capability, navies stand for a huge challenge. Because of this new situation, operators need personalized support which can differ in time: the system should accommodate the user with the right task support at the right time. This paper presents the design and first user evaluation of an adaptive interface. A method for cognitive task analysis and 4 support concepts, which were validated for static function allocation and interface design, were taken as starting point. Specific instances of the resulting adaptive interface are the possibility to redirect the alarm (system or operator initiated), and the changing functional layout (e.g. buttons, alarm categories). A first user evaluation of the interface with 64 navy students shows promising results. The method for cognitive task analysis and the 4 support concepts prove to be useable for adaptive support as well. Evaluation shows very positive results on the support system, specifically on the task allocation functions.