IALA 2014 Conference Paper Focuses On Reducing VTS Operator Stress

By Joseph R. Fonseca
Saturday, June 07, 2014
IALA Conference -Todd Schuett, Training Manager, Kongsberg Norcontrol IT

The IALA 2014 Conference held at La Coruna, Spain, 25-31 May, played host to an in-depth paper by Todd Schuett, Training Manager, Kongsberg Norcontrol IT (KNC) that focused on solutions for reducing stress in the often high pressure VTS operations room environment.

As part of the ‘Global Navigation’ technical sessions at the conference, Schuett’s paper, titled ‘Reducing Operator Workload and Stress Through Cooperative Human-Machine Systems’, covered findings from the EU Artemis Joint Undertaking-funded research project, ‘Designing Dynamic Distributed Cooperative Human-Machine Systems’ (D3CoS). The paper described VTS Trials undertaken within D3CoS that sought to establish a relationship between workload and stress levels, and concluded by detailing a prototype cooperative human-machine system that shares data between shore-based and ship-based systems. 

Describing the VTS Trials, Schuett explained that VTS Operators from Halifax, Canada and the Norwegian Coastal Administration were tested in simulated VTS scenarios with increasing workloads, from normal to overworked. Specific physical responses were measured during the simulations by connecting the operators to monitoring equipment. The trials found that when task load increased, so did the measurements that indicate stress. The operators’ attention became increasingly narrow as stress levels increased, resulting in dangerous situations being missed, and in one case, a (simulated) collision was not identified.

“The need to manage stress with human solutions is already understood but we feel that VTS technology can play an important role in reducing workload and therefore helping operators to stay in control even when the situation is particularly challenging,” says Schuett. “Even in this area, technology already offers several possibilities to help operators manage and reduce stress but the D3CoS project has shown that greater automation in cooperative human-machine systems can reduce workload further, which has the consequence of reducing pressure on the VTS operator.”

The D3CoS project maritime group developed a means of sharing data between a shore-based VTS system and a ship-based system – specifically a portable pilot unit (PPU).  Automation was key to the developed system, with functionality including the automatic sending of vessel conflict data and maritime safety information, such as weather data from the VTS to the PPU without VTS operator involvement. This is just one example of how VTS operator workload may be reduced in order to lower stress levels in the operations room.

Kongsberg Norcontrol IT, in cooperation with British Maritime Technologies (BMT) and Marimatech also developed an advanced Vessel Path Planner as part of D3CoS. Comprising an active VTS system (supplied by Kongsberg Norcontrol IT), a path planning server (developed by BMT), and a Marimatech PPU. Once the path is established and validated, the rest is automated. The VTS operator isn’t required to find and report weather data to the pilot, and should the VTS operator become engaged in a critical situation, any warnings relevant to the pilot are automatically communicated.  Workload is reduced, and with a reduction in workload, stress is likely reduced.

“The cooperative human-machine system is a beginning. It is a prototype, and more research and development is needed to understand precisely what situations or criteria create high levels of operator stress,” continues Schuett. “As a maritime domain awareness software and VTS technology developer, with installations at many of the world’s busiest ports and waterways, Kongsberg Norcontrol IT is well positioned to develop innovative new solutions in this area. IALA 2014 gave us the chance to show some of our work within D3CoS, which will be put to use in future research projects and VTS systems.”
 

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