Environmental emissions from the maritime sector, including CO₂, NO_x, and SO_x, contribute significantly to global air pollution and climate change. The International Maritime Organization (IMO) has set a target to reduce greenhouse gas emissions from international shipping to reach zero GHG by 2050 compared to 2008 levels. To meet these goals, the IMO strongly encourages the transition to alternative fuels, such as hydrogen, ammonia, and biofuels, as part of a broader decarbonization strategy. This study presents a comparative analysis of converting conventional diesel engines to dual-fuel systems utilizing alternative fuels such as methanol or natural gas. The methodology of this research is based on theoretical calculations to estimate various types of emissions produced by conventional marine fuels. These results are then compared with the emissions generated when using methanol and natural gas in dual-fuel engines. The analysis is conducted using the EVER ALOT container ship as a case study. The evaluation focuses on both environmental and economic aspects of engines operating in natural gas–diesel and methanol–diesel dual-fuel modes. The results show that using 89% natural gas in a dual fuel engine reduces nitrogen oxides (NO_x), sulfur oxides (SO_x), carbon dioxide (CO₂), particulate matter (PM), and carbon monoxide (CO) pollutions by 77.69%, 89.00%, 18.17%, 89.00%, and 30.51%, respectively, while the emissions percentage will be 77.78%, 91.00%, 54.67%, 91.00%, and 55.90%, in order, when using methanol as a dual fuel with percentage 91.00% Methanol. This study is significant as it highlights the potential of natural gas and methanol as viable alternative fuels for reducing harmful emissions in the maritime sector. The shift toward these cleaner fuels could play a crucial role in supporting the maritime industry’s transition to low-emission operations, aligning with global environmental regulations and sustainability goals.

Seaport management environment has continually changed over the last few decades due to increasing external pressure for seaports to be more competitive, active, dynamic and growing sustainably. These changes have created the need to manage organisational effectiveness in order to monitor port performance and achieve organisational objectives. While organisational effectiveness has been well known in organisational management and important in port management, its application to the seaport sector is limited. This paper presents exploratory research into critical factors of Saudi Arabian seaports’ organisational effectiveness. A Delphi method was applied. Data were collected from a two-round survey of the Saudi Arabian seaports, and interviews of 43 senior staff from Saudi Arabian seaports. A mixed method combining quantitative and qualitative analysis was conducted. A total of thirty-one (31) factors from six different dimensions, namely human resource management, customer service, finance, operation, marketing, research & development, were identified to be influential to OE. The gathered data are no doubt important to seaports because only limited research has been conducted on the application of the organisational effectiveness concept to the seaport sector. Findings of this research regarding selecting and evaluating the most influential factors of OE are relevant to decision makers in managing seaport organisations.

Jeddah Port, a critical maritime hub on the Red Sea, operates in a hot, arid environment increasingly affected by meteorological and marine extremes. This study quantifies the occurrence, intensity, and operational impacts of hazards over 2000–2024 using hourly data from the ERA5 and ERA5-Land Analysis focused on air temperature, relative humidity, rainfall, wind speed, wind gusts, apparent temperature, and wave height applying percentile thresholds, Expert Team on Climate Change Detection and Indices (ETCCDI) heat indices, Peak Over Threshold (POT) event clustering, compound hazard detection, and operational impact mapping in line with International Maritime Organization (IMO) guidelines. Results show that apparent temperature ≥ 40 °C, wind gusts ≥ 25 kt, and wave height > 2 mare the most frequent and persistent hazards, contributing to the majority of hazard-hours annually, while intense rainfall events, though rare, cause severe operational disruption through flooding and access limitations. Statistical dependence analysis identified key compound hazards (wind gust & wave height, wind gust & rain, wind gust & temperature) as the most operationally relevant multi-hazard risk scenarios at Jeddah Port. Wind gusts, high apparent temperatures, and significant wave heights are identified as high-risk hazards for Jeddah Port, driven by both frequent occurrence and severe operational impacts. Sustained wind and moderate rainfall present medium risk, while rare extremes such as intense rainfall and extreme temperatures are classified as low to medium risk. This framework enables focused adaptation for the port’s most critical hazards. The methodology is transferable to other ports, offering a scalable approach to integrating climate risk into operational resilience planning.

This research investigates the Saudi marine sector’s response to climate change. In particular, it assesses industry stakeholder awareness, attitudes, and actions concerning climate-related challenges. A complete survey was distributed to a varied range of industry participants, including executives, managers, seafarers, and academics, to assess their understanding and involvement. The research indicates moderate levels of awareness and engagement, and significant challenges, including financial limitations, a lack of experience and knowledge, and insufficient regulatory support, to implementing more sustainable practices. The study also mentions ongoing attempts to satisfy International Maritime Organization (IMO) requirements, while present mitigating techniques have limited efficacy. Compared to other regions, Saudi Arabia mostly depends on fossil fuels, which poses specific difficulties in the transformation of sustainable maritime practices. The study identifies current strategies and proposes prospects such as raising financial assistance, and the adoption of innovative technologies. These findings are critical to providing the link between the Saudi marine sector and the climate targets, as well as the Saudi Vision 2030.

This scientific research examines the intricate dynamics of Maxwell nanofluid flow across a stretching surface with Stefan blowing impacts, with a particular focus on maritime thermal management applications. The analysis integrates multiple physical phenomena including magnetohydrodynamic forces, the energy dissipation phenomenon, and thermal density variations within Darcy porous media. Special attention is given to Stefan blowing’s role in modifying thermal and mass transfer boundary layers. We derive an enhanced mathematical formulation that couples Maxwell fluid properties with nanoparticle transport under combined magnetic and density-gradient conditions. Computational results demonstrate the crucial influence of viscous heating and blowing intensity on thermal performance, with direct implications for naval cooling applications. The reduced governing equations form a nonlinear system that requires robust numerical treatment. We implemented the shooting technique to solve this system, verifying its precision through systematic comparison with established benchmark solutions. The close correspondence between results confirms both the method’s reliability and our implementation’s accuracy. The primary results of this study indicate that raising the Stefan blowing and density parameters causes notable changes in the temperature and concentration fields. The Stefan blowing parameter enhances both temperature and concentration near the wall by affecting thermal diffusion and nanoparticle distribution. In contrast, the density parameter reduces these values because of increased fluid resistance.