Aykut I. Ölçer

Maintenance/repair and production-oriented life cycle cost/earning model for ship structural optimisation during conceptual design stage

The aim of this paper is to investigate the effect of the change in structural weight due to optimisation experiments on life cycle cost and earning elements using the life cycle cost/earning model, which was developed for structure optimisation. The relation between structural variables and relevant cost/earning elements are explored and discussed in detail. The developed model is restricted to the relevant life cycle cost and earning elements, namely production cost, periodic maintenance cost, fuel oil cost, operational earning and dismantling earning. Therefore it is important to emphasise here that the cost/earning figure calculated through the developed methodology will not be a full life cycle cost/earning value for a subject vessel, but will be the relevant life cycle cost/earning value. As one of the main focuses of this paper is the maintenance/repair issue, the data was collected from a number of ship operators and was solely used for the purpose of regression analysis. An illustrative example for a chemical tanker is provided to show the applicability of the proposed approach.

Selection of the best maintenance approach in the maritime industry under fuzzy multiple attributive group decision-making environment:

Many maintenance approaches have been developed and applied successfully in a variety of sectors such as aviation and nuclear industries over the years. Some of those have also been employed in the maritime industry such as condition-based maintenance; however, choosing the best maintenance approach has always been a big challenge due to the involvement of many attributes and alternatives which can also be associated with multiple experts and vague information. In order to accommodate these aspects, and as part of an overall novel Reliability and Criticality Based Maintenance strategy, an existing fuzzy multiple attributive group decision-making technique is employed in this study, which is further enhanced with the use of Analytical Hierarchy Process to obtain a better weighting of the maintenance attributes used. The fuzzy multiple attributive group decision-making technique has three distinctive stages, namely rating, aggregation and selection in which multiple experts’ subjective judgments are processed and aggregated to be able to arrive at a ranking for a finite number of maintenance options. To demonstrate the applicability in a real-life industrial context, the technique is exemplified by selecting the best maintenance approach for shipboard equipment such as the diesel generator system of a vessel. The results denote that preventive maintenance is the best approach closely followed by predictive maintenance, thus steering away from the ship corrective maintenance framework and increasing overall ship system reliability and availability.

Risk assessment of loss of life for fishing vessels in fuzzy environment

Abstract Every year a significant number of fishing vessels and fishermen is lost due to various reasons, which can not be clearly identified. Fault Tree Analysis (FTA) is a useful method to identify the reasons of losses together with associated probabilities. However, in order to improve the safety of fishing vessels and fishermen, these uncertainties, which may be encountered in the construction of a Fault Tree, should in some way be eliminated. The main purpose of this paper is to develop an effective method to evaluate vagueness with fishing vessel accident statistics and integrate this into FTA by using Fuzzy Set Theory (FST). UK Fishing vessel accident statistics between 1990–1999 have been used towards establishing a methodology for risk assessment in fishing sector. A real case study taken from a fishing vessel accident around UK is used to explain and demonstrate the developed methodology and how it can be used to identify and qualify the risk with operational and design issues in fishing industry so that the safety of fishermen and fishing vessels can be improved.

Energy Management in the Maritime Industry

Corporate Social Responsibility (CSR) and energy management are highly interrelated with each other. Energy management serves and contributes to the targets set by a CSR policy of a shipping company or a port authority. Managers of some of these organizations have responsibilities for the effective implementation of energy efficient measures both in ship operations and in port activities under the fulfilment of their CSR (Kitada and Olcer 2015).

Maritime Energy Management

Maritime Energy Management (MEM) is (a) the study of energy flows such as supply, transformation, storage, production and consumption in the extensive maritime domain, which includes ships, ports, shipbuilding yards and ship-breaking activities, as well as (b) how this energy and its sources are optimised to manage consumption and reduce wastage in order to limit environmental and economic impacts of energy use.

The Need for Education and Training in Maritime Energy Management in Myanmar

This paper discusses the role of education and training to implement the energy efficiency measures in the Myanmar maritime industry. There are notable merits in Myanmar, for example, its geographical advantage in maritime operations and services, ports and shipyards, natural resources such as oil and gas, and general characteristics of Myanmar people. However, several weaknesses are acknowledged, for example, pollution, unregulated domestic fleets, exploitation of natural resources, and the lack of awareness. Among the various issues to be solved, the paper identifies education and training as the key to building capacity in Myanmar and investing in people as a long-term strategy. The current academic and research activities in maritime education and training institutions in Myanmar indicate a positive start. In order to accelerate the process to shift toward a zero emissions and energy efficient future, the paper identifies four areas: Legislation; Research collaboration and dissemination; IMO model course; and Regional cooperation. Finally the paper presents a hierarchical model to operationalise these areas to support maritime energy management in Myanmar.

Introduction to Maritime Energy Management

The motivational factors such as IMO regulations, Economic and Business drivers have led the maritime industry to become (more) energy efficient in the way ships are designed, as well as in the way seagoing vessels are operated and maintained. Maritime energy management is accepted at IMO and within the wider maritime community to be the main mechanism to serve the purpose of reducing GHGs and thereby increasing energy efficiency. This introductory chapter provides an overview of the fundamentals of maritime energy management discipline: from motivation to basic definitions to technical/operational measures to barriers to trade-off and so on. The Editors believe that this book will position itself as a pioneering work to familiarize the reader with trends in the maritime energy management field as well as finding solutions to overcome the related challenges.

Decision Framework for Shipowners to Comply with Air Emission Reduction Measures: A Case Study of Methanol as a Fuel

The main aim of this chapter is to develop a decision framework for ship owners to comply with emission regulations; various measures that are available to ship owners are analysed. A comparison between technical, operational, and other abatement measures for averting air emissions of carbon equivalent is made. A case study of Methanol as a marine fuel to comply with the air emission regulations is demonstrated. The environmental and economic benefits are evaluated to find the feasibility of alternative fuel technology. The externality will be assessed for the vessel before and after fuel switching. Ranking of different measures available to ship-owners is made by using a Multi Criteria Decision Making Technique. Gaps in the decision framework are analysed and evaluated. In conclusion, a holistic view of the decision framework for ship-owners is given with some recommendations. The case study will prove that, in the long term, by complying with abatement measures or alternative fuel technology, ship owners will avoid carbon tax and will have social and financial benefits. Methanol is a step towards zero emissions and complying with sustainability goals of the United Nations.

A Framework to Improve the Coexistence of Maritime Activities & Offshore Wind Farms

The increasing number and size of offshore wind farms (OWFs), combined with the ambitious plans for future developments in the sector, portray a bleak outlook for ‘traditional’ maritime and marine players. The sustained growth of OWFs can cause conflict with other marine users, and thus certain risk control options (RCOs) may need to be adapted in order to maintain navigational safety and reduce the environmental impact of such installations; introducing such measures, however, may be counter-productive in terms of energy efficiency or financial sustainability. This leads to questions such as ‘is there a point when implementing certain RCOs actually makes an OWF project unfeasible’?

Energy Manager Role in Ports

Recent years have witnessed the term ‘energy management’ increasingly being used within a wide spectrum of industrial sectors worldwide. Energy production and energy use account for two-thirds of the world’s greenhouse gas (GHG) emissions (IAE, 2017). Therefore, energy management or energy efficiency improvement is becoming a top priority for governments and for societies, especially after the entry into force of the Paris Agreement in 2016.