Maritime Transport Research最新文献_第3页

The impact of container call size evidence from simulation modelling 从模拟模型中得出的集装箱催缴规模的影响证据

Maritime Transport Research Pub Date : 2024-03-26 DOI: 10.1016/j.martra.2024.100109

Albert Veenstra , Arjen de Waal

{"title":"The impact of container call size evidence from simulation modelling","authors":"Albert Veenstra , Arjen de Waal","doi":"10.1016/j.martra.2024.100109","DOIUrl":"https://doi.org/10.1016/j.martra.2024.100109","url":null,"abstract":"<div><p>We present an analysis of the impact of large container ship call sizes on the operational efficiency of container terminals as well as on hinterland modes of transport. We use standard container terminal simulation software, that can represent a realistic terminal operation. We include dynamic crane productivity, arrival time uncertainty, and deepsea vessel prioritisation in our model.</p><p>Our experiments investigate the impact of introducing larger call sizes of container ships, increasing the uncertainty in arrival times of deepsea ships, and the impact of the phenomenon of split calls that are employed by the largest container ships in certain regions in the world. We differentiate between the impact on terminal operations, land-based hinterland traffic, and hinterland traffic over water, through barges and feeder vessels.</p><p>Our results show that introducing large ships with large container call sizes comes with benefits and drawbacks. Benefits can be found in planning advantages for both the deepsea ships and barges and feeders handled in the terminal. Drawbacks occur as a result of operational peaks in subsystems such as the quay cranes, the stack and the land side gates. Higher uncertainty deteriorates the performance of the terminal, but the impact on the hinterland modes of transport is greater than on the large deepsea vessels. The impact of the split call is that it brings all the disadvantages of large vessels, but none of the benefits.</p><p>Our analysis shows the operational impact of large call sizes on terminal operations and hinterland transport operations, based on container terminal simulations with a higher degree of realism than previous work. In addition, we offer, for the first time, insights in the impact of split calls of container ships at container terminals.</p></div>","PeriodicalId":100885,"journal":{"name":"Maritime Transport Research","volume":"6 ","pages":"Article 100109"},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666822X24000078/pdfft?md5=d33cdcde3c87105e0f060a70eca23259&pid=1-s2.0-S2666822X24000078-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140290366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effects of waiting times on the bunkering decision for tramp ships 等待时间对杂货船加油决定的影响

Maritime Transport Research Pub Date : 2024-03-18 DOI: 10.1016/j.martra.2024.100106

Gabriel FUENTES , Stein W. WALLACE , Roar ADLAND

引用次数: 0

A novel approach to hazard evaluation for MASS operation based on a hesitant fuzzy linguistic term set 基于迟疑模糊语言术语集的新型 MASS 运行危险评估方法

Maritime Transport Research Pub Date : 2024-03-18 DOI: 10.1016/j.martra.2024.100107

Xuanhe Zhang , Tao Liu , Yan Li , Junzhong Bao

{"title":"A novel approach to hazard evaluation for MASS operation based on a hesitant fuzzy linguistic term set","authors":"Xuanhe Zhang , Tao Liu , Yan Li , Junzhong Bao","doi":"10.1016/j.martra.2024.100107","DOIUrl":"https://doi.org/10.1016/j.martra.2024.100107","url":null,"abstract":"<div><p>Expert judgment has been widely utilized in ship risk assessment. The traditional method is believed to be capable of processing only designated linguistic variables, which fails to capture the degree of expert hesitation in assessing a complex system. A novel model, the bi-independent hesitant fuzzy linguistic term set (BHFLTS), based on the hesitant fuzzy linguistic term set (HFLTS), is proposed to incorporate this hesitation. This paper also identifies ten navigational hazards to maritime autonomous surface ship (MASS) operation based on a literature review. In addition, the BHFLTS approach combined with the technique for order preference by similarity to an ideal solution (TOPSIS) is utilized for hazard assessment and ranking, and with this method, “Collision avoidance decision algorithm malfunction”, “Ship situation awareness system failure” and “Command transmission system failure” are rated as the top three navigational hazards that threaten MASS operation.</p></div>","PeriodicalId":100885,"journal":{"name":"Maritime Transport Research","volume":"6 ","pages":"Article 100107"},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666822X24000054/pdfft?md5=ae34c464bd8d3549c65452a9e96aba3b&pid=1-s2.0-S2666822X24000054-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140145232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Statistical analysis of vessel loss of command frequency 船只失去指挥频率的统计分析

Maritime Transport Research Pub Date : 2024-02-28 DOI: 10.1016/j.martra.2024.100104

Spencer August Dugan, Ingrid Bouwer Utne

{"title":"Statistical analysis of vessel loss of command frequency","authors":"Spencer August Dugan, Ingrid Bouwer Utne","doi":"10.1016/j.martra.2024.100104","DOIUrl":"https://doi.org/10.1016/j.martra.2024.100104","url":null,"abstract":"<div><p>Vessel losses of command (e.g., propulsion, electrical power, or steering failure) can serve as the initiating event for significant maritime accidents, such as grounding. It is therefore important to estimate the frequency of such events for navigational risk assessments. Despite the existence of previous studies, new data have become available that may reveal more precise and useful information for risk estimations and accident prevention. This paper analyzes two databases of vessel losses of command within Norway’s economic exclusive area over a five year period. The study utilizes a novel database of incidents observed by the Norwegian Coastal Administration’s (NCA) Vessel Traffic Services (VTS), in addition to incidents reported to IHS Markit over the same five year period. Automatic identification system (AIS) data is used to construct activity metrics of vessel activity, which are used to compute vessel loss of command incidence rates for ship types. To account for under-reporting, capture–recapture methods are used to calculate adjusted incidence-rates. The duration of each incident is recorded and used to construct distributions of repair times. Probabilities of towing and anchoring are computed for ship types and incident location. The results indicate that previous studies may have underestimated the incidence of vessel loss of command. Using the best-case scenario, cargo ships and tankers suffer losses of command more frequently than other ship types. Significant under-reporting of losses of command was observed in the IHS Markit database.</p></div>","PeriodicalId":100885,"journal":{"name":"Maritime Transport Research","volume":"6 ","pages":"Article 100104"},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666822X24000029/pdfft?md5=16ec93eb9a61d01b2313c6ebf1aa6a41&pid=1-s2.0-S2666822X24000029-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139992426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Maritime fleet composition under future greenhouse gas emission restrictions and uncertain fuel prices 未来温室气体排放限制和不确定燃料价格下的海运船队组成

Maritime Transport Research Pub Date : 2024-01-23 DOI: 10.1016/j.martra.2024.100103

Olav Loennechen , Kjetil Fagerholt , Benjamin Lagemann , Magnus Stålhane

{"title":"Maritime fleet composition under future greenhouse gas emission restrictions and uncertain fuel prices","authors":"Olav Loennechen , Kjetil Fagerholt , Benjamin Lagemann , Magnus Stålhane","doi":"10.1016/j.martra.2024.100103","DOIUrl":"https://doi.org/10.1016/j.martra.2024.100103","url":null,"abstract":"<div><p>This paper studies the maritime fleet composition problem with uncertain future fuel and carbon prices under the restriction of complying with future greenhouse gas (GHG) emission restrictions. We propose a two-stage stochastic programming model that can be adapted to two different variants of this problem. The first variant considers the Maritime Fleet Renewal Problem where there is an existing initial fleet to be renewed through scrapping and acquisitions, as well as retrofitting of ships in the current fleet. The second variant considers the Maritime Fleet Size and Mix Problem, where also the initial fleet must be determined. When applying the model to a fleet of Supramax bulk carriers as a case study, we find that LNG- and methanol-based power systems are favorable initial choices. Two different scenario sets, with 50% and 90% reduction restrictions by 2045, are investigated. Depending on the ambition level, retrofits towards ammonia can be cost-effective.</p></div>","PeriodicalId":100885,"journal":{"name":"Maritime Transport Research","volume":"6 ","pages":"Article 100103"},"PeriodicalIF":0.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666822X24000017/pdfft?md5=1744d22e05f186b00b76fa29e2c952b9&pid=1-s2.0-S2666822X24000017-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139548628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A goal programming model for the stability analysis of a maritime inventory routing replanning problem 基于目标规划模型的船舶库存路径重规划稳定性分析

Maritime Transport Research Pub Date : 2023-11-22 DOI: 10.1016/j.martra.2023.100101

Homayoun Shaabani , Lars Magnus Hvattum , Gilbert Laporte , Arild Hoff

{"title":"A goal programming model for the stability analysis of a maritime inventory routing replanning problem","authors":"Homayoun Shaabani , Lars Magnus Hvattum , Gilbert Laporte , Arild Hoff","doi":"10.1016/j.martra.2023.100101","DOIUrl":"https://doi.org/10.1016/j.martra.2023.100101","url":null,"abstract":"<div><p>This paper aims to provide insight into the stability of solutions to a multi-product maritime inventory routing problem (MIRP) when replanning due to the occurrence of unexpected events. The MIRP determines vessel routes while ensuring that port inventory levels remain within operational thresholds. In today's global economy, supply chains are often vast and complex. Managing inventory and routes for multiple products across international waters is a daunting task. The MIRP provides a framework for optimizing these complex supply chain networks. Four stability metrics are available to evaluate the stability of the adjusted plans. The problem is modeled using a goal programming approach to consider all stability metrics simultaneously. Then, 30 instances from the literature are solved using CPLEX. It is shown that there are significant differences when all stability metrics, as opposed to a single one, are considered simultaneously, which can lead to better agreement between the vendor and the retailer in decision making. A cost analysis is performed to examine the impact of the cost increase on the stability of the other metrics. The key finding is that when all stability metrics are considered simultaneously, a 5 % increase in cost can result in 7.5 % fewer changes to replanned solutions, while this rate is less than half when the stability metrics are considered individually. This highlights the significance of evaluating all metrics simultaneously instead of analyzing each metric separately.</p></div>","PeriodicalId":100885,"journal":{"name":"Maritime Transport Research","volume":"5 ","pages":"Article 100101"},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666822X23000205/pdfft?md5=dfc924a9dc852f6765a6c84caf0ee734&pid=1-s2.0-S2666822X23000205-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138396161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal planning of an urban ferry service operated with zero emission technology 采用零排放技术的城市轮渡服务的优化规划

Maritime Transport Research Pub Date : 2023-10-06 DOI: 10.1016/j.martra.2023.100100

Kenneth Løvold Rødseth , Kjetil Fagerholt , Stef Proost

引用次数: 0

A Systems-Level Study of Ammonia and Hydrogen for Maritime Transport 海洋运输用氨和氢的系统级研究

Maritime Transport Research Pub Date : 2023-09-06 DOI: 10.1016/j.martra.2023.100099

Jessie R. Smith , Epaminondas Mastorakos

{"title":"A Systems-Level Study of Ammonia and Hydrogen for Maritime Transport","authors":"Jessie R. Smith , Epaminondas Mastorakos","doi":"10.1016/j.martra.2023.100099","DOIUrl":"https://doi.org/10.1016/j.martra.2023.100099","url":null,"abstract":"<div><p>An energy systems comparison of grid-electricity derived liquid hydrogen (LH2) and liquid ammonia (LNH3) is conducted to assess their relative potential in a low-carbon future. Under various voyage weather conditions, their performance is analysed for use in cargo transport, energy vectors for low-carbon electricity transport, and fuel supply. The analysis relies on literature projections for technological development and grid decarbonisation towards 2050. Various voyages are investigated from regions such as North America (NA), Europe (E), and Latin America (LA), to regions projected to have a higher electricity and fuel grid carbon intensity (CI) (i.e., Asia Pacific, Africa, the Middle-East, and the CIS). In terms of reducing the CI of electricity and fuel at the destination port, use of LH2 is predicted to be favourable relative to LNH3, whereas LNH3 is favourable for low-carbon transport of cargo. As targeted by the International Maritime Organisation, journeys of LNH3 cargo ships originating in NA, E, and LA achieve a reduction in volumetric energy efficiency design index (kg-CO<sub>2</sub>/m<sup>3</sup>-km) of at least 70% relative to 2008 levels. The same targets can be met globally if LH2 is supplied to high CI regions for production of LNH3 for cargo transport. A future shipping system thus benefits from the use of both LH2 and LNH3 for different functions. However, there are additional challenges associated with the use of LH2. Relative to LNH3, 1.6 to 1.7 times the number of LH2 ships are required to deliver the same energy. Even when reliquefaction is employed, their success is reliant on the avoidance of rough sea states (i.e., Beaufort Numbers >= 6) where fuel depletion rates during a voyage are impractical.</p></div>","PeriodicalId":100885,"journal":{"name":"Maritime Transport Research","volume":"5 ","pages":"Article 100099"},"PeriodicalIF":0.0,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49878817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A gap analysis for automated cargo handling operations with geared vessels frequenting small sized ports 小型港口齿轮船自动货物装卸作业的差距分析

Maritime Transport Research Pub Date : 2023-07-25 DOI: 10.1016/j.martra.2023.100098

Mariann Merz , Esten Ingar Grøtli , Odd Erik Mørkrid , Espen Tangstad , Synne Fossøy , Håvard Nordahl

{"title":"A gap analysis for automated cargo handling operations with geared vessels frequenting small sized ports","authors":"Mariann Merz , Esten Ingar Grøtli , Odd Erik Mørkrid , Espen Tangstad , Synne Fossøy , Håvard Nordahl","doi":"10.1016/j.martra.2023.100098","DOIUrl":"https://doi.org/10.1016/j.martra.2023.100098","url":null,"abstract":"<div><p>With the Yara Birkeland, the world’s first autonomous cargo ship developed for commercial use, nearing regular unmanned operation, it is crucial to assess the availability and readiness of unmanned cargo handling solutions. While there are already fully automated container terminals at large international ports, the purpose of this study is to consider solutions to support autonomous ships for small sized ports with little infrastructure, typical of coastal harbors in Norway. The analysis centers on geared cargo vessels that can navigate such ports with minimal or no crew onboard, and the primary method used involved workshops and interviews with personnel from relevant industries. An important finding is the lack of skilled crane operators that are willing to follow the ship. The study concludes that it is important to address the following 3 key technological gaps: (1) the autonomous connection and release of break-bulk, (2) automatic securing and lashing of onboard cargo, and (3) shipboard cranes that can operate without an onsite crane operator.</p></div>","PeriodicalId":100885,"journal":{"name":"Maritime Transport Research","volume":"5 ","pages":"Article 100098"},"PeriodicalIF":0.0,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49878814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The interrelationship between coastal, Great Lakes, Inland, and deep-sea freight rates: A longitudinal approach 沿海、五大湖、内陆和深海运费之间的相互关系:纵向方法

Maritime Transport Research Pub Date : 2023-07-20 DOI: 10.1016/j.martra.2023.100097

Joshua Shackman , Margaret Ward

{"title":"The interrelationship between coastal, Great Lakes, Inland, and deep-sea freight rates: A longitudinal approach","authors":"Joshua Shackman , Margaret Ward","doi":"10.1016/j.martra.2023.100097","DOIUrl":"https://doi.org/10.1016/j.martra.2023.100097","url":null,"abstract":"<div><p>This study examines freight rates in four key areas of the U.S. water freight transportation industry –coastal, Great Lakes/St. Lawrence River, inland waterways, and deep-sea shipping. The data involved in this study includes longitudinal data from 2008 to 2021 on freight rates in all four of these sectors along with data on macroeconomic variables and commodity prices. The purpose of this study is as follows: (A) examine lead/lag relationships between the four freight rates, (B) examine lead/lag relationships between the freight rates and macroeconomic variables, and (C) examine lead/lag relationships between the freight rates and commodity prices. We do find significant predictive power for freight rates both on each other as well as for macroeconomic indicators. In terms of predicting other freight rates, inland freight rates are the only ones to predict all three other freight rates. Both inland and deep-sea freight rates are shown to be strong at predicting macroeconomic indicators in the short run, but deep sea has greater long-term predictive power. Commodity prices on the other hand are only minimally predicted by freight rates but are also strong predictors of inland freight rates. Coastal and Great Lake freight rates are shown only to have minimal predictive power. Differences in competitive conditions, as well as the type of cargo between these four sectors, are proposed as an explanation for these results.</p></div>","PeriodicalId":100885,"journal":{"name":"Maritime Transport Research","volume":"5 ","pages":"Article 100097"},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49878811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0