Wyniki wyszukiwania - BazTech

1

Which radar and ECDIS functionalities do nautical officers really need in certain navigational situations?

Hochgeschurz S., Motz F., Grundmann R., Kretzer S., Thiele L.

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

|

2021

|

Vol. 15 No. 1

73--81

EN

Today’s navigation systems risk information overload and display clutter due to the multitude of available functionalities and information. Different navigational situations present differing challenges to the navigator, because of varying traffic or maneuvering conditions. This suggests that the need for information and functionalities on ECDIS and radar systems depends on the navigational situation, which was investigated by means of an online questionnaire. A sea voyage was divided into three situations, ranging from narrow maneuvering in port areas, to confined navigable waters, and open sea. N = 80 navigators completed the questionnaire. A compound priority measure was calculated to express the need for each functionality. Approximately half of the functionalities were prioritized in a situation dependent manner and substantially more functionalities were prioritized higher on ECDIS than on radar systems. The results have strong implications for aligning navigation systems more with user needs in the sense of a human-centered design approach.

2

Overreliance on ECDIS technology: A challenge for safe navigation

Kristić M., Žuškin S., Brčić D., Car M.

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

|

2021

|

Vol. 15 No. 2

277--288

EN

The Electronic Chart Display and Information System (ECDIS) became the central navigational tool on modern ships. The system comprises numerous navigational and other components, each of them with its limitations and reliability. Due to ECDIS's revolutionary features, navigators are tempted to place excessive reliance on the system. Such reliance on it as a sole navigational aid is undoubtedly a problematic issue. The proposed paper is a segment of a systematically carried out research among ECDIS stakeholders. ECDIS EHO (Experience, Handling, and Opinion) research aims through research activities based on a user-centred approach to develop and improve the educational framework. The overreliance on the ECDIS system motivated the proposed research, which focused on system users' opinions and practice regarding confirmation of the accuracy of information displayed on ECDIS, particularly concerning positional sensors. Analysis of answers collected by the ECDIS EHO questionnaire represents a backbone of the research supported by previous achievements. The answers have been categorized and discussed, revealing certain worrying aspects referring to the system's positional error experienced by users. Furthermore, preferred methods of cross-checking ECDIS information have been identified and have differed among respondents based on their rank on board. Additionally, answers indicate certain doubts between users’ interpretation of the best confirmation method and the actual selection of the used method. The importance of cross-checking navigational data in avoiding overreliance and maintaining situational awareness has been presented in the conclusion chapter and the proposal for further work.

3

Identification of weak links in the ECDIS - operator system based on simulator training

Pipchenko O., Burenkov O., Tsymbal M., Pernykoza V.

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

|

2021

|

Vol. 15 No. 1

83--88

EN

Statistics, based on grounding incident investigations, is not always sufficient for retrieving objective information and designing comprehensive solutions for improving the ECDIS training process for deck officers and development of methods aimed at reducing the grounding incident rate and improving the effectiveness of navigation. The research studies statistics on deck officers` errors made during training on bridge simulators equipped with ECDIS and provides an analysis of errors distribution among navigators of different ranks. The study shows that in event of the EPFS (Electronic Position Fixing System) failure the likelihood of grounding increases dramatically for all deck officers, irrespective of rank and experience, despite having fully functional radar and ECDIS in dead reckoning mode.

4

Cross-section of ECDIS education and training worldwide and in the Republic of Croatia: Relations Between Programs and User Perceptions

Car M., Tominca-Coslovich S., Brčić D., Žuškin S.

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

|

2021

|

Vol. 15 No. 2

267--277

EN

Besides its obvious benefits, the Electronic Chart Display and Information System (ECDIS) continues to develop as a sophisticated, complex system. With ever-growing features and the integration of external data and sources, it is nowadays normally considered as one among the compact elements forming a part of an even more complex Integrated Navigation System (INS). The ECDIS handling requires a certain level of technical knowledge and operational skills to be gained, besides the usual navigational background. In order to utilize the system efficiently and safely, the navigator has to obtain several levels of education. The Generic ECDIS Training (GT), as defined in the respective International Maritime Organization (IMO) Model Course, introduces the navigator with fundamental, required operational (however introductory) and theoretical knowledge. Apart from the GT, there is an optional, ECDIS manufacturer-approved Equipment Specific Training (EST). The latter represents a special type of training where the navigator improves its theoretical knowledge, understanding, and proficiency, together with competence demonstration on a specific approved ECDIS model. This paper elaborates the dynamics of worldwide regulations pertaining to the ECDIS Education and Training (EET) plan. The reference is given to training procedures in the Republic of Croatia, placing its educational framework in the broader context. Although it is of a non-mandatory nature, the EST is unofficially considered that way, and there is a stable and reasonable ground to consider the opinions and arguments of the navigators who prefer the EST. This is also supported by the fact that there is a large number of approved systems on the market. Apart from fulfilling the performance standards regulated by the International Maritime Organization (IMO), ECDIS models differ significantly regarding handling, interface, and interpretation of data and information, therefore biasing the required knowledge and the purposefulness of the system. The survey among navigational ranks was used to support the study and to relate the existing programs with the actual navigational situation. The motivation was the consideration of the current relationship between defined EET programs, their inequalities, and the actual user needs, referring to the systematisation of the fulfillment of the system as a basic navigation tool. The selected questions referred to the possession of ECDIS certificates and basic education and knowledge, and the navigational ranks’ opinions regarding the opportunity to enhance their knowledge during the EST. The latter considered lack of standardisation (including terminology), apart from different levels of education. As expected, the answers were not uniform, revealing differences in opinion as well as in basic system interpretation. The latter could have possible causes and relation to the particular education system in the first place. The current educational framework was discussed in terms of EET enhancements and the development of the navigation curricula. The study results have been presented and discussed systematically, leading to observations on the potential safety of navigation improvement.