David Brčić

ECDIS possibilities for BWE adoption

The Electronic Chart Display and Information System (ECDIS) development and implementation have been linked primarily to the safety of navigation. Further development allows the implementation from other aspects of navigation. This primarily pertains to the Harmful Aquatic Organisms and Pathogens (HAOP) from Ballast Water Exchange (BWE) and the use of ECDIS system for improving environmental protection. The paper contains an overview of important legal aspects of sea environment protection related to the Ballast Water Management (BWM) Convention on global as well as on local scale. Apart from enhancing the safety of navigation, integration of the proposed tool for sea environment protection in the ECDIS with onboard ballast water system can significantly contribute to sea and sea environment protection from harmful substances. In this paper, the architecture of such system is suggested. This approach also ensures a reduction of possible consequences on ecological incidents and human errors.

Northern and Southern European Traffic Flow Land Segment Analysis as Part of the Redirection Justification

Natural geotraffic flows act as one of the most important factors directly affecting redirections of the world transportation routes. In terms of door‐to‐door multimodal transport chain, several routes from Far East toward European destinations exist, with Northern European route acting as prevailing one. The proposed paper elaborates possibilities of redirection of the traffic flow by directing cargoes to an alternative route through the Adriatic Sea. The aim is to justify realisation of mentioned possibility in terms of land transportation segment analysis, i.e. by analysing cargo transportation from ports to final destinations in Central Europe, placed in natural gravitational hinterland of ports of Northern Adriatic Port Association (NAPA). Geo‐traffic and logistics’ analyses of NAPA ports are presented in the paper. Container traffic and its trend as compared with Northern European ports are analysed. The development plans of inland connections are presented in function of justification of the traffic flow redirection. A model for the selection and evaluation of the optimal container transport route by using the multiple criteria analysis (MCA) has been introduced and developed. The model was applied for the selection of the representative service connecting Far East (origin) and the central Europe (destination) by detailed analysis of the land transportation segment. The PROMETHEE method was used for the model testing and evaluation. Summarised results are presented and discussed tending to confirmation of the traffic flow redirection justification. http://www.transnav.eu the International Journal on Marine Navigation and Safety of Sea Transportation Volume 11

On Vessel to Vessel Interaction during Head-on encounter

Interaction of two vessels during head-on encounter acts as short and strong force. Consequences can reflect on vessels’ handling causing unwanted effects. This phenomenon was elaborated in the paper, considering influence of interaction force and its dependence on main recognized factors: mutual vessels’ distance, speed and depth under the keel. Besides interaction force components, analyses comprised other relevant factors as vessel’ heading, course alterations and drift of vessel due to interaction. Planned and, according to main factors, defined scenarios were conducted in navigational simulator with usage of navigational areas creation tools. After simulations and data post-processing, obtained results were summarized. Correlation of results with mathematical relations describing interaction was conducted. In the conclusion chapter, final inferences are stated, with some of observations which in the opinion of authors are significant. Conducted analyses, obtained results and derived conclusions represent basis for further research, thus future activities regarding interaction phenomenon are proposed.