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Floating Offshore Structures: Hydrodynamic Analysis and Design
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Floating Offshore Structures: Hydrodynamic Analysis and Design

A Special Issue of Journal of Marine Science and Engineering (ISSN 2077-1312) belonging to the section "Ocean Engineering".

Deadline for manuscript submissions: 15 February 2027 | Viewed by 2584

Editor

Dr. Marcin Kapitaniak

E-Mail Website
Guest Editor
School of Engineering, University of Aberdeen, Aberdeen, UK
Interests: dynamics of structures; nonlinear dynamics; experimental methods; marine modelling; floating offshore wind; finite element method
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Floating offshore structures play a vital role in the global transition toward low-carbon energy systems and the expansion of infrastructure into deeper waters. Advances in hydrodynamic modelling, experimental testing, and digital design tools are supporting the development of next-generation concepts, including floating wind turbines, wave energy converters, and hybrid platforms that integrate multiple renewable sources. Improved modelling of installation and deployment, inspection and maintenance, and safe crew transfer supported by motion-compensated gangways are enhancing reliability, reducing operational risk, and lowering lifecycle costs. However, challenges remain in predicting wave–structure interactions, capturing coupled dynamic responses, and ensuring robust performance under complex environmental conditions.

This Special Issue aims to present recent advances in the hydrodynamic analysis and design of floating offshore structures. We invite contributions covering theoretical developments, computational methods, experimental studies, and innovative design approaches that improve performance, resilience, and sustainability across renewable offshore energy applications.

Topics of interest include, but are not limited to:

  • Wave–structure interaction and hydrodynamics
  • Numerical and experimental modelling
  • Coupled multi-physics analysis
  • Mooring and station-keeping systems
  • Installation, deployment, maintenance, and operability
  • Crew transfer and offshore access systems
  • Structural dynamics and fatigue
  • Floating offshore wind and hybrid renewable platforms
  • Marine energy devices
  • Risk, reliability, and safety
  • Design optimization and digital twins

Dr. Marcin Kapitaniak
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access semimonthly 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 2600 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

  • floating offshore structures
  • offshore renewable energy
  • hydrodynamics
  • wave–structure interaction
  • floating wind turbines
  • wave energy converters
  • mooring systems
  • structural dynamics
  • offshore operations
  • digital design

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

28 pages, 5914 KB  
Article
VIV of Six-Cylinder Array with Partial Biofouling in Oscillatory Flow
by Henry Francis Annapeh and Victoria Kurushina
J. Mar. Sci. Eng. 2026, 14(9), 816; https://doi.org/10.3390/jmse14090816 - 29 Apr 2026
Cited by 2 | Viewed by 497 | Correction
Abstract
This paper presents a numerical investigation of vortex-induced vibration (VIV) of six elastically mounted circular cylinders in oscillatory flow, three smooth and three biofouled with triangular surface roughness elements. The study aims to characterise the influence of the longitudinal spacing ratio ( [...] Read more.
This paper presents a numerical investigation of vortex-induced vibration (VIV) of six elastically mounted circular cylinders in oscillatory flow, three smooth and three biofouled with triangular surface roughness elements. The study aims to characterise the influence of the longitudinal spacing ratio (L/D=3,4, and 5) on the two-degree-of-freedom (2DOF) vibration response at a constant Keulegan–Carpenter number of KC=10. Simulations are performed using the transient RANS equations with the SST k–ω turbulence model, and structural motion is resolved using a dynamic mesh approach. Lock-in behaviour is observed over the reduced velocity range 5≤Ur≤10. Biofouled cylinders generally exhibit higher in-line displacement amplitudes than smooth cylinders in the initial and lower lock-in branches, whereas smooth cylinders tend to attain higher in-line amplitudes in the upper lock-in branch. The spacing ratio L/D is found to significantly influence the response, with peak vibration amplitudes varying non-uniformly across the array and no single spacing configuration being optimal for all cylinders. This behaviour is further supported by analyses of trajectories, frequency content, and vorticity fields. Among the smooth cylinders, the middle cylinder exhibits the largest in-line displacement amplitude of 3.28D at L/D=5 and the largest cross-flow displacement of 1.34D at L/D=3. For the biofouled configurations, the middle and upstream cylinders show the highest in-line displacement amplitude of 2.69D at L/D=4, while the maximum cross-flow displacement of 1.27D is observed for the upstream cylinder at L/D=5. Full article
(This article belongs to the Special Issue Floating Offshore Structures: Hydrodynamic Analysis and Design)
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23 pages, 23782 KB  
Article
Investigation into Fishtailing Effect of Oil Tankers Moored at Pile-Founded Column Single-Point Mooring (SPM) Systems
by Hezheng Huang, Huifeng Wang, Bozhen Zhang, Liang Yang and Lei Sun
J. Mar. Sci. Eng. 2026, 14(9), 770; https://doi.org/10.3390/jmse14090770 - 22 Apr 2026
Viewed by 737
Abstract
Targeting the “Fishtailing Effect” associated with shallow-water, pile-founded column single point mooring (SPM) systems, this study investigates the vessel’s motion characteristics under multiple operational scenarios using a numerical calculation method validated by model tests. A refined classification of combined wind, wave, and current [...] Read more.
Targeting the “Fishtailing Effect” associated with shallow-water, pile-founded column single point mooring (SPM) systems, this study investigates the vessel’s motion characteristics under multiple operational scenarios using a numerical calculation method validated by model tests. A refined classification of combined wind, wave, and current conditions was conducted. The study examines the vessel’s sway and mooring line tension response under both collinear and non-collinear combinations of these environmental forces. Furthermore, methods for suppressing vessel motion were explored. The results indicate that vessel motion leading to the “Fishtailing Effect” is more prone to occur under collinear wind, wave, and current conditions. Wave and wind energy can, to some extent, mitigate the vessel motion. When the current speed exceeds a certain critical threshold, the extreme values of the mooring forces on the swaying vessel undergo an abrupt change. Applying a stern tug force and reducing the mooring line length are both effective in decreasing the vessel motion range and the tension in the mooring lines. The findings shed light on the fishtailing-effect characteristics of tankers moored at pile-founded column SPM systems, providing a valuable reference for the safety and stability design of such mooring systems. Full article
(This article belongs to the Special Issue Floating Offshore Structures: Hydrodynamic Analysis and Design)
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26 pages, 6040 KB  
Article
Numerical Study on the Effect of Column Boot Diameter-to-Height Ratio on the Hydrodynamic Performance of Deep-Draft Cylindrical Offshore Platforms
by Chengming Qin, Zhe Chen, Yanping He and Yadong Liu
J. Mar. Sci. Eng. 2026, 14(6), 584; https://doi.org/10.3390/jmse14060584 - 21 Mar 2026
Viewed by 592
Abstract
For deep-draft cylindrical platforms with a large annular column boot, the influence of the column boot diameter-to-height ratio (d/h) on motion performance remains unclear. This study investigates the effect of d/h on platform hydrodynamics while keeping the main body geometry, displacement, and draft [...] Read more.
For deep-draft cylindrical platforms with a large annular column boot, the influence of the column boot diameter-to-height ratio (d/h) on motion performance remains unclear. This study investigates the effect of d/h on platform hydrodynamics while keeping the main body geometry, displacement, and draft unchanged. A hybrid numerical model validated against tests is adopted: STAR-CCM+ free-decay simulations identify equivalent linear damping, and ANSYS AQWA predicts hydrodynamic coefficients, response amplitude operators, and coupled time-domain responses under a 100-year survival sea state in the western South China Sea. Increasing d/h substantially increases heave added mass and added pitch moment of inertia, leading to longer natural periods and higher damping in heave and pitch. However, its effect on motion responses is non-monotonic and strongly response-dependent. As d/h increases, the responses are initially reduced markedly. The minimum surge and heave responses occur at d/h = 2.39 and 4.67, with reductions of about 34.0% and 87.2%, respectively, while the pitch response is already reduced by about 67.3% at d/h = 7.22. Further increases in d/h may weaken surge and heave mitigation while providing limited additional benefit for pitch. These findings provide qualitative understanding and quantitative guidance for response-oriented column boot design and optimization of similar platforms. Full article
(This article belongs to the Special Issue Floating Offshore Structures: Hydrodynamic Analysis and Design)
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