Widening Study of a 45-Meter Tuna Fishing Vessel Based on Multi-Objective Optimization

Stability issues in fishing vessels represent a significant risk to maritime safety, despite advances in stability regulations by the International Maritime Organization (IMO). This paper presents a multi-objective optimization study focused on the widening of a 45.1-meter tuna fishing vessel to improve stability by increasing its beam. The optimization was developed based on the IMO’s Second Generation Stability Criteria (SGSC), evaluating the vessel’s critical failure modes. The Non-Linear Generalized Reduced Gradient (GRG) method method was applied to obtain a balanced solution that improves stability and increases cargo capacity while maintaining operational safety. The vessel\u27s improved performance was validated under operational conditions, demonstrating the feasibility of the proposed modifications

Integrated logistics development in Colombia: A commitment to strengthening the first-mile logistics in isolated territories

Logistics is a discipline whose areas of knowledge can determine the competitiveness of an organization, a territory, or a nation. Since Colombia has an agro-industrial vocation, government institutions and the communities that produce these products must work together to achieve the integral development of this sector. Despite the above, the current context shows that part of this population faces socioeconomic problems, such as a lack of education and opportunities. Specifically, in the case of the Zapatosa\u27s swamp, Cesar, there are other problems associated with poverty, inequality, state neglect, and overexploitation of natural resources. This document presents an integral training program called Easy Logistics, whose purpose is strengthening the first stage of the supply chain in this region, incorporating norms and quality standards associated with the post-harvest phase of the lemon

Conceptual design of a hybrid propulsion vessel for transporting green hydrogen to aquaculture farms

This work describes the conceptual design process of a vessel intended to transport green hydrogen to aquaculture farms in the Aysén Region, Chile. The design proposes a hybrid power generation configuration, which integrates PEM fuel cells (PEMFC) and a battery bank, to ensure efficient and continuous operation. Within the propulsion system, the implementation of an azimuthal Z-drive system is established, enhancing maneuverability for efficient operations in the cultivation centers. The process includes an exhaustive analysis of the ship\u27s mission profile, together with improvements in hull design, evaluating the forward resistance by means of computational fluid dynamics (CFD) simulations. Power demand under different sailing conditions is also considered, with the objective of optimizing the power generation capacity of the plant and the hydrogen storage required for the propulsion and transport system. The development of this work is part of the PT02 project at the Sustainable Acceleration Center for Electromobility (CASE)

AI for Comprehensive Naval Project Management: From Render to Launch

The integration of generative Artificial Intelligence (AI) tools is transforming project management in the naval industry. This article proposes the design of a comprehensive management system for naval design and engineering projects that incorporates AI and machine learning technologies in each phase of the project life cycle. Using Adaptive Structuration Theory (AST), the study examines how design project managers implement these tools to optimize processes from conceptualization to delivery. Factors such as Innovative Attitude, Peer Influence, and Task-Technology Fit (TTF) are considered. The proposed system includes modules for document analysis, activity planning, cost and timeline forecasting, and risk and requirements management, all powered by AI. An integration plan and evaluation framework are presented to measure the potential impact of the system on the efficiency and effectiveness of naval project management. This study offers a significant contribution to the understanding how generative AI can transform project management in the naval industry, while addressing the associated ethical and practical challenges

Analysis of technical standards for boat design: river electromobility of small boats in Colombia

Introducing river-based electromobility in a country presents technical, environmental, and economic challenges. Once a dependable river mobility scheme is implemented, various commercial and industrial businesses can be established, benefiting multiple communities. However, it is crucial to effectively manage the diverse activities associated with watercraft. In Colombia, technical and environmental standards currently do not adequately support the use of small electric boats or promote their effective implementation. Therefore, this paper proposes a method for classifying, prioritizing, and analyzing standards for small boats using a normative framework and a Systems Life Cycle Management (SLCM) design method. Additionally, as an application of the method, the document analyzes small boat designs in Colombia based on environmental and electromobility standards. This paper categorizes and ranks relevant standards for small boats, focusing on the application of electromobility on rivers. The proposed approach simplifies referencing standards and helps classify, prioritize, and analyze them. It is noteworthy that Colombia requires the adoption of a greater number of standards to support electromobility

Durability study of polymeric ballistic panels used in riverine combat boats under humidity-aged and impact fatigue conditions

Low Draft River Combat Boats are equipped with a set of armored panels on the deck and attached to the sides to protect the crew. These shields are composed of laminated panels made of ultra-high molecular weight polyethylene fibers with a polyurethane resin matrix. The use of these panels results in a weight reduction of approximately 50% compared to traditional armor. However, the polymeric nature of these panels makes them susceptible to degradation of their mechanical properties over time under operational environmental conditions.This study evaluates the effect of moisture and temperature on the durability and crack propagation behavior of these ballistic panels under impact fatigue conditions through experimental procedures

TACAN and DF Systems Integration in the Colombian Oceanic Patrol Vessel: Challenges and Solutions

This article discusses the installation of TACAN and DF navigation systems on the Colombian Ocean Patrol Vessel to enhance operational and safety capabilities, especially for helicopter operations. It outlines the technical challenges of integrating these systems due to limited space and potential electromagnetic interference, detailing the analysis and planning process from 2017 to 2022. In 2023, naval commands confirmed the critical importance of the TACAN system. The main technical issue that has been identified pertains to optimizing both systems’ antennas within the mast’s confines to ensure optimal functionality and mitigate interferences. The article examines a range of technical solutions and integration strategies that have been devised to address these challenges

Stability and Hydrodynamic Analysis of a Deepwater Spar Platformin The Gulf of Mexico

Global energy demand has driven the oil industry to develop floating systems with stability, low response motions, high production capacity for oil and gas in deep and ultra-deep water. Its development is an iterative process, due to the fact that it analyzes the production and safety requirements according to the bases of the project, and subsequently it will advance or go back, according to its performance, one step in the design spiral. Hernandez-Menez (2020) states that it is a meticulous process, given the high cost it represents, it requires an excellent and functional design, according to the specifications required for a safe operation. For this reason, new floating systems have been developed, such as Spar-type platforms. Hernandez-Hernandez (2020) mentions that the environmental conditions, hull shapes and weight distribution are key factors for the stability and hydrodynamic response of a floating production system which is why stability and minimal motion are sought to prevent a stoppage or failure in oil and gas production equipment. Currently there is not a floating system of this type in Mexican territory, this study analyzes a case under environmental conditions of the Gulf of Mexico, establishing the hull shape, stability criteria and loading conditions to determine the motions of the platform

Digital transformation as an approach to a warehouse 4.0

Shipbuilding and ship repair projects require a complex variety of materials, including raw materials, supplies, consumables, equipment, and spare parts. These materials demand a robust process for effective materials management. Shipyards, especially those that combine shipbuilding and ship repair business units, face the challenge of variability in terms of the number of projects, which intensifies the demand and variety of items required. The materials management process includes sub-processes such as material requirements planning, receiving and shipping operations, inventory control, supplier-managed inventory, and the promotion of turnover. Consequently, the challenge for warehouse managers is to coordinate and streamline these activities to help maintain high levels of productivity in shipbuilding and ship repair projects. The purpose of this article is to analyze how disruptive technologies within the framework of Industry 4.0 can help warehouse managers address current and future challenges, particularly those arising from the diverse and dynamic nature of projects within an engineer-to-order system oriented toward project-based production. This includes exploring best practices, identifying opportunities for improvement, and formulating an implementation plan that incorporates both procedural and technological advancements