JOURNAL OF MARITIME TRANSPORT INDUSTRY
Year:2016 | Volume:2 | Issue:1|Papers Count:8

The accurate prediction of sediment transfer rate is one of the significant and effective factors in designing ports and coastal structures. In the present research, sedimentation and erosion are investigated in Sajafi port and two experimental and numerical methods are applied for surveying the effect of tidal currents on harbor of the Sajafi port. In the experimental method, the primary hydrography conducted in in the first half of 2012 is used as the basis and sedimentation and erosion rate in various levels are evaluated based on the hydrography conducted in the first half of 2013. In the numerical method, using Mike 21 software, the sedimentation and erosion rate are estimated according to the boundary condition and primary input, based on which the estimated error was 5.5 to 0.7. The results of erosion and sedimentation analysis reveal that in shallow coastal areas, due to the high current speed in both ebb and flood, the concentration of suspended load increases and currents transfer the suspended load which results in erosion in shalow areas. With transfer of the suspended load, sedimentation happens in areas which are deeper than coastal area and the area neighboring structures. In the structure neighboring area, the speed of tidal currents decreases, consequently the potential of sediment transition decreases and the suspended load have enough time to sediment in there areas.

Considering the geographical location of Iran and the lengthy coastlines in north and south, various geographical and environmental conditions is dominant in Iranian coasts which effect the integrated management of these areas. Due to the especial environmental condition dominant in this coastal city, its coasts have especial features. This paper attempts to determine the strategic priorities needed for integrated coastal zone management in Anzali by understanding the features of Anzali coasts, using the SWOT analysis, and determining the strengths, weaknesses, opportunities and threats. The results reveal that Anzali has abundant strengths and opportunities for economic development; although, due to unique and sensitive environmental circumstances, designing an integrated coastal zone management plan in this city will face with a complex situation. The output of the SWOT analysis defines the priority of applying aggressive and competitive strategies to reach the ICZM goals. Therefore, using the strengths and opportunities, the weaknesses can be decreased to a minimum level and the threats can be removed.

In ports, the wave and current pattern is of high importance considering current prediction and designing marine structures. In the present research, the wave and current pattern are investigated in Shahid Rajaei port using numerical modeling. Shahid Rajaei port, which is located in the vicinity of Bandar Abbas city, has been considered as the most important commercial port in Iran. The modeling is done using the third generation model of MIKE 21 software. MIKE 21 is a valid model with the ability of modeling the wave and current hydrodynamic and the changes due to structure construction. According to the port characteristics, the study area was divided into 7047 elements and 3737 nodes. Wave modeling is conducted under the effect of wind and applying the real wave data collected in the southern, western and eastern borders. Tidal currents are simulated using M2, N2, O1, K1 and S2 tidal constituents at the eastern and western open boundaries (correspond to Bandar Abbas and Shahid Rajaei ports). The results reveal that construction of protective dike in the vicinity of western breakwater increases the significant wave height to 12 percent and the water level to 7 percent in average.

The ports' existential philosophy can be defined within cargo handling operation and it reaches to its maximum development through speedy and high quality cargo handling operations. In addition to the continuous quality increase, the optimum use of time is of high importance and the effort to eliminate the confounding factors is highly effective. The purpose of the present research is to investigate the performance of Iranian northern ports in handling the cargo of visiting vessels to identify the delay causes of cargo handling operations. ABC method is applied for prioritization and categorization in three levels, based on which port manager can make the right decisions regarding planning and optimum resource allocation based on categorization of delay causes. So, the right decision helps in elimination or reduction of operation delays which consequently decreases berth occupancy time and increases cargo handling norm as much as possible. In this research, the causes of vessels operation delays are identified and categorized in three ports of Amir Abad, Nowshahr, and Anzali from 1999 to 2014. Also, the performance of each of the three ports is specifically investigated in 2014. In both investigations, valuable results are achieved; for instance, during the last 16 years, Anzali port has the highest delay and delay cause frequency. In the other words, this port has 144452 hours operation delay related to 98521 delay causes which the investigation of the acceptable limit of delay cause happening must be considered by the port manager.

Container terminals are places where freights are moved by special equipment. One of the most important issues in seaside operation scheduling in container ports is berth scheduling so that the berth plan has a great influence on the quay crane schedule, the yard storage plan and even the truck routing. In this paper, a mix integer linear programming model is proposed for dynamic and hybrid berth scheduling problem to schedule multiple vessels at multiple terminals at the Shahid-Rajaei container port. To evaluate the proposed model, the results of the present port operation in Shahid Rajaei port are compared with the results of the proposed model. The results reveal that the proposed model has decreased the vessels departure delay up to 50 percent in container port. The proposed model is evaluated by comparing the results with discrete berth scheduling model in literature. Numerical examples show that applying the proposed berth scheduling model can improve operations and significantly decrease vessel delayed departures compared with discrete berth scheduling model. So, in competition with other nearby ports, the container port can be more successful in satisfying the shipping companies and have higher productivity and profitability.

The purpose of this study is to model customers' waiting time in Khorramshahr Persian Gulf Marine Passenger Terminal (as a case study analysis), using the concept of queuing theory and dynamical systems. In order to evaluate queuing model in this terminal, required data were obtained by the author as a field study as well as interviews with management and staff of the terminals in the second half of 1392. With respect to human agency service provider, a dynamic pattern is used to provide the relationships between the components of this system. First, the conceptual and systematic models of research were extracted using records and literature studies in the field of queuing theory. Then, the flow model was designed and simulated by Vensim software. After model success in initial tests, it was examined in the steady- state model of exogenous variables. In the following, to optimize the waiting time for customers, the model was simulated in two states: (1) change in the number of service providers, (2) change in the minimum delay time. In former, the number of service providers was changed from 2 to 3, 4, 5 and 6 and it was observed that change in the number of service providers only changed the initial amount of waiting time and didn’t affect the time to balance waiting time curves. But system behavior shows that 3 provider services developed more optimal behavior. In the latter, a minimum delay time was changed from 2 to 1, 3, 4 and 5 -minutes and it was observed that change in this parameter, despite the change in the first parameter, affects equilibrium values and as the minimum time delay increases, the waiting time curves reach equilibrium at higher amounts and 1 minute of minimum delay allows waiting time curves to show a more optimal behavior.

Cargo transportation plays an important role in development of foreign trade. Nowadays, with growth of social welfare and economic development, maritime transportation demand has been increased and many countries are seeking to have access to cheap transportation services. The purpose of the present research is to estimates the demand function for maritime transportation in the Khorramshahr Port. This research is done applying statistical and econometrics methods relying on regression analysis time- series, Eviwes software, log- linear models, and the data related to the time interval of 1992 to 2012. The results reveal that demand function traction is positive for factors such as marine cargo capacity, average of transported cargo, and the general product price index; and it is negative for factors such as average freight, average fuel consumption. Marine Cargo Capacity scaling variables (53%), average consumption fuel (45%), and average transported cargo (39%) have the highest effects on demand function for marine cargo transportation in khorramshahr Port.

The purpose of the present research is to investigate the factors related to safety, and physical and psychological security of the staff. The population includes all the 180 of the operational staff at the Imam Khomeini Port. To define the population size, the Morgan and Krejcie tables are applied, and 118 people were accidentally chosen as the sample. The research instruments include a 60-item questionnaire testing the five factors of personality and a 21-item questionnaire testing the attitude towards safety observance. For statistical analysis of the data in descriptive level, the mean and standard deviation are applied and the Pearson Correlation and Regression testing are used in the inferential statistics level. The results reveal that there is a positive and meaningful relation among responsibility, pluralism, extroversion and the positive attitude towards safety observance, but there is an inverse and meaningful relation among emotional difficulties and attitude towards safety observance.