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Oceans
Special Issues
Sustainable Marine Structures
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Sustainable Marine Structures

A special issue of Oceans (ISSN 2673-1924).

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 4444

Special Issue Editor

Prof. Dr. Yordan Garbatov

E-Mail Website1 Website2
Guest Editor
Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
Interests: marine structural design & analysis; fatigue and fracture mechanics; structural degradation; ultimate limit dtate analysis; structural reliability; risk-based maintenance; offshore wind farm
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue will focus on state-of-the-art and recent developments in sustainable marine structures aimed at enhancing the maritime industry through building of innovative, intelligent, and environmentally friendly structures. Submissions will be subject to rapid peer review and publication upon acceptance, whereby articles will enjoy the benefits of being freely available in open access.

The topics relevant to this Special Issue include but are not limited to ships and offshore structures, wind turbine-supporting structures in the marine environment, fluid–structure interaction, maritime safety and smart shipping, reliability and maintenance of marine structures, automation and intelligence, big data, and artificial intelligence in marine structures.

The Special Issue will cover advances in the design and service life assessment of marine structures, accounting for environmental pollution. The risk-based maintenance of marine structures leading to minimizing the risk of environmental pollution while considering life cycle assessment and energy efficiency will also feature.

Special attention will be given to the implementation of environmental requirements for new-built and existing marine structures throughout the life cycle toward avoiding harmful impacts on the environment and human health.

Prof. Dr. Yordan Garbatov
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Oceans is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • marine structures
  • fluid–structure interaction
  • maritime safety
  • energy efficiency
  • environmental pollution
  • big data

Published Papers (1 paper)

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Research

17 pages, 5011 KiB  
Article
Optimal Life Extension Management of Offshore Wind Farms Based on the Modern Portfolio Theory
by Baran Yeter and Yordan Garbatov
Oceans 2021, 2(3), 566-582; https://0-doi-org.brum.beds.ac.uk/10.3390/oceans2030032 - 24 Aug 2021
Cited by 6 | Viewed by 3100
Abstract
The present study aims to develop a risk-based approach to finding optimal solutions for life extension management for offshore wind farms based on Markowitz’s modern portfolio theory, adapted from finance. The developed risk-based approach assumes that the offshore wind turbines (OWT) can be [...] Read more.
The present study aims to develop a risk-based approach to finding optimal solutions for life extension management for offshore wind farms based on Markowitz’s modern portfolio theory, adapted from finance. The developed risk-based approach assumes that the offshore wind turbines (OWT) can be considered as cash-producing tangible assets providing a positive return from the initial investment (capital) with a given risk attaining the targeted (expected) return. In this regard, the present study performs a techno-economic life extension analysis within the scope of the multi-objective optimisation problem. The first objective is to maximise the return from the overall wind assets and the second objective is to minimise the risk associated with obtaining the return. In formulating the multi-dimensional optimisation problem, the life extension assessment considers the results of a detailed structural integrity analysis, a free-cash-flow analysis, the probability of project failure, and local and global economic constraints. Further, the risk is identified as the variance from the expected mean of return on investment. The risk–return diagram is utilised to classify the OWTs of different classes using an unsupervised machine learning algorithm. The optimal portfolios for the various required rates of return are recommended for different stages of life extension. Full article
(This article belongs to the Special Issue Sustainable Marine Structures)
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