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    Tytuł:
    Preliminary results of a system-theoretic assessment of maritime autonomous surface ships’ safety
    Autorzy:
    Wróbel, K.
    Krata, P.
    Montewka, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/117567.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Maritime Autonomous Surface Ships (MASS)
    autonomous ship
    MUNIN project
    Advanced Autonomous Waterborne Application (AAWA)
    System-Theoretic Process Analysis (STPA)
    System-Theoretic Accident Model and Process (STAMP)
    unmanned shipping system
    safety at sea
    Opis:
    While a system-theoretic approach to the safety analysis of innovative socio-technical systems gains a growing acceptance among academia, safety issues of Maritime Autonomous Surface Ships (MASS) remain largely unexplored. Therefore, we applied a System-Theoretic Process Analysis to develop and analyze a preliminary model of the unmanned shipping system in order to elaborate safety recommendations for future developers of the actual system. Results indicate that certain advancements shall be undertaken in relation to MASS’ software solutions in particular.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 717-723
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Step by Step Approach for Evaluating the Reliability of the Main Engine Lube Oil System for a Ships Propulsion System
    Autorzy:
    Anantharaman, M.
    Khan, F.
    Garaniya, V.
    Lewarn, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/116248.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Ship Propulsion
    Main Engine
    Main Propulsion
    Lubricating Oil System
    Markov Analysis
    reliability
    Propulsion System
    Engine Lube Oil System
    Opis:
    Effective and efficient maintenance is essential to ensure reliability of a ship's main propulsion system, which in turn is interdependent on the reliability of a number of associated sub- systems. A primary step in evaluating the reliability of the ship's propulsion system will be to evaluate the reliability of each of the sub- system. This paper discusses the methodology adopted to quantify reliability of one of the vital sub-system viz. the lubricating oil system, and development of a model, based on Markov analysis thereof. Having developed the model, means to improve reliability of the system should be considered. The cost of the incremental reliability should be measured to evaluate cost benefits. A maintenance plan can then be devised to achieve the higher level of reliability. Similar approach could be considered to evaluate the reliability of all other sub-systems. This will finally lead to development of a model to evaluate and improve the reliability of the main propulsion system.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 3; 367-371
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Which radar and ECDIS functionalities do nautical officers really need in certain navigational situations?
    Autorzy:
    Hochgeschurz, S.
    Motz, F.
    Grundmann, R.
    Kretzer, S.
    Thiele, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1841572.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Electronic Chart Display and Information System
    questionnaire
    Navigational Situation Assessment
    Analysis of Variance
    ECDIS
    Opis:
    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.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 73-81
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using Reliability Block Diagrams and Fault Tree circuits, to develop a Condition Based Maintenance Model for a Vessel’s Main Propulsion System and Related Subsystems
    Autorzy:
    Anantharaman, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/117168.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Fault Tree
    Main Engine
    Propulsion System
    Condition Based Maintenance (CBM)
    Planned Maintenance System
    Reliability Block Diagrams
    Main Propulsion
    fault tree analysis (FTA)
    Opis:
    Merchant shipping has undergone a great transformation over the past three decades. The shipping market is highly competitive, which coupled with high crewing and fuel costs, leads to high operational costs. One of the paramount factor involved in vessel operation is the Maintenance cost and there is a dire need to keep this cost to a minimum. Fortunately the earlier policy of repair only maintenance in commercial shipping has been done away with, and was replaced by the policy of preventive maintenance. Planned Maintenance System was introduced by ship management companies in the early 90’s. Planned Maintenance offered benefits over the repair only policy, but has its own demerits. Many a time machinery equipment is opened up for routine maintenance after a specified time interval, irrespective of the need. This could lead to potential failures, which is explained by the fact that preventive maintenance resulted in meddling of a well set piece of machinery equipment, leading to its subsequent failure. This is where Condition based maintenance or CBM steps into prominence. CBM monitors the health of the machinery equipment, analyses the condition and helps you in decision making. The Main Propulsion system forms the heart of a vessel and we need to ensure its reliability, together with the reliability of its associated sub-systems. The entire system can be represented by reliability block diagrams, to show the interdependence of various components comprising the system. This helps in the decision making process of CBM whereby ship’s engineer may decide to stop the running machinery equipment, open and overhaul the same, else postpone the overhaul for a later safe date.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 3; 409-413
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A COLREGs-compliant decision support tool to prevent collisions at sea
    Autorzy:
    Martelli, M.
    Žuškin, S.
    Zaccone, R.
    Rudan, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201449.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    analysis of ship collision
    collision avoidance
    collision avoidance decision making
    collision avoidance system
    anti-collision maneuvering
    autonomous control unit
    autonomous ship
    autonomous navigation system
    Opis:
    Groundings and collisions still represent the highest percentage of marine accidents despite the current attention on Maritime Education and Training and the improvement of sensor capability. Most of the time, a collision is caused by a human error with consequences ranging from moderate to severe, with a substantial impact on both environment and life safeguarded at sea. In this paper, a brief statistical data regarding human element as a root cause of marine incidents together with collision regulations misunderstanding is presented as a background chapter. Furthermore, the present work discusses a decision support system architecture to suggest an appropriate action when the risk of a potential collision is detected. The proposed architecture system is based on various modules integrated with proper sensor input data regarding the surrounding navigation area. As a result, the tool can support the Officers of Watch in the decision-making process providing an early suggestion in compliance with the COLlision REGulations. The proposed system is intended to be used onboard independently from the degree of automation of the ship, and it is based on AIS, which is mandatory, making it widely applicable. The proper use of the system can considerably reduce the number of collisions, as demonstrated by the obtained results.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 2; 347--353
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Formal Safety Assessment (FSA) for Analysis of Ship Collision Using AIS Data
    Autorzy:
    Zaman, M.B.
    Santoso, A.
    Kobayashi, E.
    Wakabayashi, D.
    Maimun, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/116666.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    AIS Data
    Automatic Identification System (AIS)
    Formal Safety Assessment (FSA)
    geographic information system (GIS)
    Analysis of Ship Collision
    Collision Avoidance
    Malacca Strait
    safety at sea
    Opis:
    Currently, Maritime safety is the best issue in the world. International Maritime organization (IMO) have recommended FSA methodology to enhance maritime safety. In this paper, the research conducted in the Malacca Strait. Malacca Strait is an area that has a high risk for shipping navigation. Many accidents occur in the area are like collision, fire, grounding and so on. Therefore a study on improving safety in this area is very important. it is to produce an output that can be used to provide input to the master and multiple stakeholders to improve safety on board at the time of sailing. In this study, AIS is used as a data source. Sea condition data collected actual traffic through the Automatic Identification System (AIS) equipment installed at Kobe University, Japan, and Universiti Teknologi Malaysia (UTM) in Johor, Malaysia. The data is applied to define a method with the help of Geographic Information Systems (GIS).
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 1; 67-72
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Positioning Using GPS and GLONASS Systems
    Autorzy:
    Kujawa, L.
    Rogowski, J. B.
    Kopańska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/116742.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Navigation Satellite System (GNSS)
    Global Positioning System GPS
    GLONASS
    Precise Positioning
    Positioning Accuracy
    Geometric Dilution of Precision (GDOP)
    Horizontal Dilution of Precision (HDOP)
    DOP Analysis
    Opis:
    This paper presents an experiment involving the processing of observations using the GPS and GPS/GLONASS systems performed at the BOGO, BOGI, and JOZ2 IGS stations. Due to the small number of GLONASS satellites, the authors failed to receive any significant improvement in positioning accuracy using GPS and GLONASS observations jointly.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 3; 283-286
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Safety Level Analysis of the SWIM System in Air Traffic Management
    Autorzy:
    Krzykowska, K.
    Siergiejczyk, M.
    Rosiński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/117434.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Safety of Navigation
    SWIM System
    air traffic management (ATM)
    Safety Level Analysis
    Safety Level
    Service-Oriented Architecture (SOA)
    System Wide Information Management (SWIM)
    communication
    Navigation and Surveillance (CNS)
    Opis:
    Safety level analysis is included in the paper in context of SWIM system in air traffic management. The example is given. It examines the limitations and drawbacks of current ICT systems used for air traffic management. Analyzing the development of communication systems for the management of general air traffic, it can be concluded that the development of the terrestrial segment of the exchange of information between the parties relating to the air traffic will fluctuate towards a solution based on a service-oriented architecture SOA. This architecture will be the basis for the implementation of the concept of an information exchange system SWIM.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 1; 85-91
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Considerations regarding qiling system for offshore wind turbines
    Autorzy:
    Panaitescu, M.
    Panaitescu, F. V.
    Panait, P. G.
    Scupi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201414.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    modeling and simulations
    simulation study
    wind turbine
    lubricating oil system
    wind loads
    wind influence
    floating wind farms
    lubricating oil analysis
    Opis:
    Power from renewable sources would play a key role in the future of electricity .The wind energy is one of the goal of EU's commitment, which want to develop offshore wind potential [1], [2]. Lubrication of wind turbines is very important for maintenance [3] . The purpose of this paper is to present some considerations about monitoring oiling system. This system monitors kinematic data in real time. The importance of monitoring real data with this system help us to simulate lubrication for various types of wind turbine reducers in order to choose the optimal form of the lubrication system and for good maintenance.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 563--567
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of pier contact accident in busan new port of south Korea by System-Theoretic Accident Model and Processes (STAMP)
    Autorzy:
    Kim, S. R.
    Wamugi, W. J.
    Camliyurt, G.
    Kim, D. W.
    Park, Y. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201437.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    maritime accidents
    investigation on maritime accidents
    accident analysis
    System-Theoretic Accident Model and Process
    maritime safety
    safety at sea
    pilotage
    lesson
    Opis:
    Marine accidents are caused by complex and diverse causes. Therefore, it is necessary to analyse accidents from the perspective of the whole system rather than the existing analysis models that focus on cause-effect. The STAMP analysis is a constraint-based model that focuses on improper management or enforcement of safety-related constraints in system operation. Thus, as a case study of the application of the STAMP technique in marine accident analysis, the Milano Bridge pier contact accident that occurred on April 6, 2020 in Busan New Port of South Korea was analysed by the STAMP technique in this study. Through this study, it was proposed to break away from the domestic accident investigation, which focused only on the punishment of the ship operator, and to suggest improvements that enable organizations related to the marine accidents to take initiative to take efforts for safety.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 2; 299--304
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of defective turbocharging system on the safety and reliability of large marine diesel engine
    Autorzy:
    Anantharaman, M.
    Islam, R.
    Sardar, A.
    Garaniya, V.
    Khan, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1841550.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    marine power plant
    diesel engine
    large marine diesel engine
    turbocharging system
    safety and reliability
    Fault Tree Analysis
    main engine
    maximum continuous rating
    Opis:
    Today huge capacity sea-going vessels are propelled by mega high-powered marine diesel engines, referred to as Main Engine. Turbocharging system is an integral part of large marine diesel engine plant, contributing to their safety, reliability, and efficiency. Defects in the turbocharging system could result in higher fuel consumption, erratic running of the Main Engine, and in the worst scenario may result in the stoppage of the Main Engine at sea. An inefficient turbocharging system may also cause major damage to turbochargers, resulting in undesirable accidents out at sea. To avoid such undesirable accidents and ensure smooth operations of the Main Engine, it is required to address this concern. The aim of this research is to study the turbocharging system for a large Main Engine using a Kongsberg engine simulator. Various malfunction of the Turbocharging system is considered, relevant data is collected and analysed. Moreover, a Fault Tree Analysis, (FTA) is considered to identify the top undesirable event which is the failure of the Main Engine. Based on the results of this study, various steps are suggested to avoid failure of the Main Engine due to the defective turbocharging system.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 189-198
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Safety Analysis of Interdependent Critical Infrastructure Networks
    Autorzy:
    Blokus, A.
    Dziula, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/116995.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    critical infrastructure
    safety analysis
    interdependent critical infrastructure networks
    critical infrastructure network
    safety characteristics
    random interdependency matrix
    critical infrastructure system
    multilayer infrastructure network framework
    Opis:
    Certain critical infrastructure networks show some interconnections, relations and interactions with other ones, most frequently when located and operating within particular areas. Failures arising within one critical infrastructure network, can then negatively impact not only on associated systems, societies and natural environment, but also on mutual critical infrastructure networks. Therefore, interdependent critical infrastructure networks can be determined as network of critical infrastructure networks (network of networks approach). The paper presents safety analysis of the network of critical infrastructure networks, taking into account interconnections, relations and interactions between particular ones. Critical infrastructures networks as multistate systems are considered, by distinguishing subsets of no-hazards safety states, and crisis situation states, and by analysing transitions between particular ones. Issues introduced in the article are based on the assumption that one key critical infrastructure network impacts on functioning of other critical infrastructure networks - can reduce their functionality and change level of their safety and inoperability, furthermore, other networks can impact each other, too. Safety characteristics of network of critical infrastructure networks: safety function, mean values and standard deviations of lifetimes in particular safety state subsets, are determined, taking into account interdependencies between particular networks. The results are related to various values of coefficients defining the significance of influence of interdependencies among networks.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 781-787
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Navigation’s safety improving by efficiently analysis of the ship’s power Plant energy flows interconnection
    Autorzy:
    Veretennik, A.
    Kulyeshov, I.
    Mikhailov, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2086298.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    navigation’s safety
    safety at sea
    ship's power plant
    power plant energy flows
    autonomous movable objects
    mechanical energy flow
    power plant system
    efficiently analysis
    Opis:
    The operation of an autonomous movable objects, such as a sea transport vessels, implies the presence of a source of potential energy on board the vessel and the possibility of converting this energy into the work required for the autonomous movable object (vessel). Being an autonomous object, a transport vessel should be provided with energy for it moving, energy for heat exchange processes on board and electricity for powering electrical equipment, automation and navigation systems, and household needs on board. An analysis of the component of the engine room equipment made it possible to designate (combine) the generating equipment of mechanical energy flow, equipment which are generating the heat energy flow and equipment which are generating the electric energy flow. Based on the results of the research the relationships between the energy flows are identified connections and ways to ensure stabilization of energy generation on board the cargo vessel is outlined. Using the results of the research the relationships between the energy flows will reduce the likelihood of accidents on board a cargo vessel due to a stop in the generation of one of the energy flows and thereby ensure increased safety of man at sea. Taking into account the peculiarities of the distribution of energy flows in ship power plants can be an effective tool not only to improve the economic performance of it, but also to increase the safety of navigation and navigation in general, due to the reliable provision of uninterrupted and efficient operation of ship power plants.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 1; 39--42
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Human error in pilotage operations
    Autorzy:
    Ernstsen, J.
    Nazir, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/117463.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    safety at sea
    human error
    Systematic Human Error Reduction and Prediction Approach (SHERPA)
    pilotage operations
    sociotechnical system
    maritime domain
    Hierarchical Task Analysis (HTA)
    safety climate
    Opis:
    Pilotage operations require close interaction between human and machines. This complex sociotechnical system is necessary to safely and efficiently maneuver a vessel in constrained waters. A sociotechnical system consists of interdependent human- and technical variables that continuously must work together to be successful. This complexity is prone to errors, and statistics show that most these errors in the maritime domain are due to human components in the system (80 ? 85%). This explains the attention on research to reduce human errors. The current study deployed a systematic human error reduction and prediction approach (SHERPA) to shed light on error types and error remedies apparent in pilotage operations. Data was collected using interviews and observation. Hierarchical task analysis was performed and 55 tasks were analyzed using SHERPA. Findings suggests that communication and action omission errors are most prone to human errors in pilotage operations. Practical and theoretical implications of the results are discussed.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 1; 49-56
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computer-Based Training (CBT):innovation and influence Towards Teaching-Learning Process at JBLFMU-Molo
    Autorzy:
    Alimen, R. A.
    Ortega, N. B.
    Galve, R.
    Bito‐onon, L. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/117148.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    maritime education and training (MET)
    Computer Based Training (CBT)
    Teaching-Learning Process
    innovation
    MET System in the Philippines
    Marine Engineering Students
    Analysis of Variance (ANOVA)
    quantitative-qualitative research
    Opis:
    This study determined the level of assessment of subjects with CBT (Computer-Based-Training) application among marine engineering students of John B. Lacson Foundation Maritime University-Molo, Iloilo City. The participants in this study were the randomly selected one hundred and thirty-three (133) marine engineering students of JBLFMU-Molo, Iloilo City who had taken subjects with CBTs. The present study employed quantitative-qualitative research design by Creswell (2013). Results reveal the following: (1) review with CBT or CBTR review is the mostly utilized subject because this is needed in the marine engineering licensure examinations; (2) level of assessment of CBTs is excellent; (3) no significant differences in the assessment of CBTs were found out among marine engineering students as classified according to different variables such as academic performance, students’ classification, type of students, and section.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 821-825
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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