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Modelling the processes of taking over the watch from an autonomous navigation system

Hochgeschurz S., Dalinger E., Motz F.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2021

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Vol. 15 No. 1

117--126

EN

The maritime industry is striving towards increasing levels of autonomy within the field of navigation. However, fully autonomous vessel navigation requires an extraordinarily complex system. As a step towards full autonomy and to reduce system complexity, nautical officers should still be available on board to take over the watch from the autonomous system in situations, in which human intervention is required. Therefore, a highly advanced human-machine interface (HMI) is essential, which supports nautical officers in retrieving all necessary information in order to manage the takeover. The implementation of the autonomous system and introduction of an HMI creates new processes, which need to be defined. In this paper, we portray our approach to define the processes for watch handovers from the autonomous system to nautical officers by investigating current watch handover processes. Subsequently, the resulting process models are described and discussed.

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Security Modeling Technique: Visualizing Information of Security Plans

Ley D., Dalinger E.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2011

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Vol. 5, no. 4

417--422

EN

Since the terrorist attacks of 11th September 2001 efforts are made to enhance the security standards in maritime shipping. The joint research project VESPER (improving the security of passengers on ferries) funded by the German Federal Ministry of Education and Research (BMBF) addresses among others the investigation of sea- and landside measures and processes. One of the results of the ongoing analysis phase is that the current representation of information in security plans can hardly be used for a complete real-time implementation of relevant measures in critical situations. As a result, information and design require-ments to develop a Security Modeling Technique (SMT) were identified using the Applied Cognitive Work Analysis (ACWA). SMT intends to support decision making of security officers during the implementation of security levels. This contribution describes the phases of development and the resulting design concept.

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Development of Requirements for Communication Management on Board in the Framework of the E-navigation Concept

Motz F., Dalinger E., Hockel S., Mann C.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2011

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Vol. 5, no. 1

15--22

EN

The current separation of communication systems and navigational systems on the ships bridge doesn’t meet the requirements of the e-navigation concept of the International Maritime Organization (IMO) for safe navigation to include all means and information in the decision making. Hydrographical, meteorolog-ical and safety related information is presented on the communication equipment without filtering or as print-outs solely. A task oriented integration and presentation of this information on the navigational displays will support the officers in their decision making and enhance the safety of navigation. The core element onboard for the integration is the INS (Integrated Navigation System) concept of the IMO where a task and situation dependent presentation of information is specified based on a modular concept. Information should be auto-matically processed, filtered and integrated in the navigational information systems to support the users in their tasks. To achieve this goal a concept for communication management was developed. An Applied Cog-nitive Work Analysis (ACWA) is conducted to identify requirements for the design of a communication man-agement system based on the cognitive processes of the operators. This paper describes the concept for com-munication management and, as a first result, gives the description of the domain of maritime communication that provides a basis for the identification of requirements for communication management in the framework of the e-navigation concept.

4

Comparison of Traditional and Integrated Bridge Design with SAGAT

Motz F., Dalinger E., Widdel H., Hockel S., Mackinnon S.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2009

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Vol. 3, no. 1

67--72

EN

Modular Integrated Navigation Systems (INS) according to the revised IMO performance standards on INS combine and integrate the validated information of different sensors and functions and allow the presentation on the various displays according to the tasks. The aim of the investigations discussed within this paper was to assess the advantages of an INS design compared to a traditional bridge layout with respect to the execution of collision avoidance and route monitoring tasks. The Situation Awareness Global Assessment Technique (SAGAT) approach was applied to assess Situation Awareness (SA) during these operations while bridge design and out of window visibility were manipulated. Additionally, workload was measured by NASA-TLX with its six subscales. The experiment was conducted in a full immersive simulation environment with 26 experienced mariners. The results indicate that SA is significantly higher with the INS bridge design in the reduced visibility condition compared to the traditional bridge design. Also, tendencies were found that workload and subdimensions are influenced by bridge design and visibility conditions.