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The aim of the article is to analyse the transport accessibility of the Tri-City seaports as well as to verify the necessity of starting the inland navigation. The proposal to develop inland navigation by creating new and developing existing waterways is supported by the idea of sustainable transport, which emphasizes how important it is to improve the efficiency of transport work and to minimize the harmful impact of transport on the environment. The purpose of the study is to determine the capability to increase the cargo capacity of the Port of Gdansk and the Port of Gdynia. The article presents the results of the operational analysis from the navigation and manoeuvring simulator Navi-Trainer Professional 5000, where scenarios that the barge from Tri-City seaports reaches the planned dry port in Zajączkowo Tczewskie have been made. This concept intends to verify the option of relieving truck traffic in the Tri-City area.

The purpose of this study is to develop a new educational approach responding to the needs of new areas of knowledge, skills, and attitudes in maritime education and training (MET) as set forth in the recently published Global Maritime Professional initiative (IAMU 2019). In particular, this study explores the development of a collaborative e-learning approach targeting young maritime professionals coming together from different MET institutions. An action research process has been employed, where faculty, administrators, and students from four MET institutions participated to understand evolving educational needs and the need for new educational approaches. Based on the outcome, a new collaborative e-learning approach was tested and evaluated with students from the MET institutions. The findings give evidence of new educational needs in MET concerning leadership, teamwork, communication, cultural awareness, and new technology applications. The results point toward how collaboration is needed to infuse new topical expertise to MET institutions and to enable students (and instructors) to increase collaboration, including the importance of socialization between students from different MET institutions; how it is possible to develop new dynamic e-learning materials to give students access to new topic expertise; and the provisions of application and analytical learning activities with an e-learning educational approach. MET institutions are under pressure to develop new educational topics and approaches. At the same time, they are experiencing resource constraints and tend to operate in isolation. The results of this study provide a route forward as to how MET institutions can come together to develop new forms of education using the latest e-learning educational methods and technologies.

Modern technologies provide the optimization, the management, and the automation of the port operation and the logistics processes, hence they create an effective advance which strengthens the port's position among the maritime communities. If it is not enough, they also improve the integration of governing bodies to standardize and harmonize the reporting formalities. Ports have been especially challenged during the COVID - 19 pandemic. The port enterprises, which had dynamically introduced innovative solutions, have maintained their position on the market. This means that innovation is the only way to maintain a high position in the international economy. The aim of the study is to present a review of port technologies, which is based on literature. The article was written in accordance with the method of literature analysis. [ABSTRACT FROM AUTHOR] Copyright of TransNav: International Journal on Marine Navigation & Safety of Sea Transportation is the property of Gdynia Maritime University, Faculty of Navigation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The aim of the paper is to analyse the length of time that ships spend in the Port of Gdansk. It is based on the examination of the time when ships come into and leave the port. Source of data used in the study is public web platform - Marine Traffic. Analysis which was conducted, enables to get information about duration of ships servicing in the port with a division into dimension, load capacity and type of the ship. Due to that information, it is possible to observe the duration of complete service for each vessel, including entering the harbour, reloading and the departure. Gained knowledge would allow to forecast, plan and model future development operations more properly. In addition, due to the method based on counting the number of hours that ships spend in the harbour, it is possible to estimate the amount of pollution emitted to the air.

Small-size dredgers are used as a standard for dredging and maintaining the depth of the fairways to seaports, as well as of the ports themselves. These vessels are characterized by limited draft and a low freeboard. The safety of such craft, in terms of their stability, in relation to the conducted works is ensured by the observance of appropriate regulations and requirements. The use of these ships requires navigation between the ports in which they operate. Open sea navigation poses a threat to such vessels. The article presents two characteristic cases of overturning of vessels during sea towing. The requirements of existing freeboard regulations regarding the stability and stability of dredgers do not provide them with a sufficient level of safety at sea. Phenomena such as longitudinal and lateral swaying, wave boarding and dynamic action of the wind may lead to their overturning. The article deals with the problem of the influence of particular phenomena that threaten the stability of dredgers during sea navigation. The analysis of static and dynamic stability for various characteristic shapes of small dredgers is presented. The possibility of water entering the watertight compartments was also taken into account. The research was presented on the numerical models of dredgers. The main purpose of this paper was to assess the risks and possibilities of capsizing of small dredgers designated for port work and redevelopment during their sea voyage.

The aim of the research was to create a decision-making model, which would be able to support planning, organizing and conducting the dredging works in the port area. The proposed solution is a multiple element system which enables to verify, in a comprehensive way, the majority of the aspects determining the quality and the time of dredging enterprise realization. The paper presents an original approach to the decision-making process during the organization of dredging works, using the computer program. In order to achieve the main goal of the study, the conditions of dredging works were considered. Furthermore, the factors that have an influence on the schedule of the project were evaluated and algorithms, as well as process organization schemes, were developed. If it is not enough, the decision models corresponding to the discussed issue were analysed and the computer program was created. And last but not the least, the proposed project and equipment were verified using a simulation model. While creating this model, the method of multiple criteria AHP (Analytic Hierarchy Process) decision support was used. Moreover, the mass service model with the priority queue regulations, the expert study, and statistical analysis of the traffic flow, were provided. The model was developed in reliance to multiple criteria studies, based on the opinions of multinational experts. These enabled to adjust each element of the system in accordance with various locations. As a result of the research, the following thesis has been proven, that detailed analysis of the conditions of dredging works and taking into account the received conclusions enables to reduce the costs and shorten the time of dredging projects realizations.

The article discusses the effectof conditions during maritime transport on particular quality and safety parameters of cereal, in relation to quality management and logistics management. Therefore, transport requirements for cereal as a cargo were identified, and furthermore,threats resulting from improperly conducted logistic process of bulk material with strong sorption properties were described. The aim of this article was to compare the differences in sorption properties between four selected cereal species using the static desiccator method. This method is the standard reference method. As a result of the conducted research, the existence of significant variability in the sensitivity to the effectof maritime transport conditions among cereal as a product group was identified. The most resistant to water vapor was rye grain. The differences between each cereal species should be associated with variability in the physical structure and chemical composition of grains of each individual cereal species. Further works in this area should take into consideration not only the diversity but also the variability of cereal sensitivity owingto the combined effect of relative humidity of the atmosphere and ambient temperature with use of the in-depth thermodynamic analysis of sorption.