The effect of spatial correlation of sea states on extreme wave loads of ships

Mikulić, Antonio; Katalinić, Marko; Ćorak, Maro; Parunov, Joško

doi:10.1080/17445302.2021.1884817

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…34. Results of the regression analysis are presented in Table 5, while more details regarding the regression analysis can be found in [26]. The procedure for calculating design VWBM necessitated the determination of T Z , λ, and θ/(ρgL 2 B) through employing regression coefficients from Table 5 in Equation (10).…”

Section: Results Of the Regression Analysis Are Presented In Tablementioning

confidence: 99%

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Consequences of the Improved Wave Statistics on a Hull Girder Reliability of Double Hull Oil Tankers

Parunov,

Mikulić,

Ćorak

2024

JMSE

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This paper investigates the change in hull girder failure probabilities and partial safety factors caused by the implementation of the new procedure for direct computation of wave loads recommended by the International Association of Classification Societies (IACS). Differences between new and previous procedures are primarily related to the different associated scatter diagrams, and secondarily due to the assumptions on wave spectrum, wave energy spreading, and ship speed. This study performs a comparative structural reliability analysis of the global longitudinal bending of five oil tankers of different sizes between two procedures for wave load computation. Firstly, failure probabilities are compared, and secondly, modified partial safety factors are proposed, resulting in similar failure probabilities according to two separate procedures. It is found that implementation of the new revision of the IACS procedure for direct computation of wave loads results in a reduction of the minimum required ultimate vertical bending capacity of a ship hull by 10%. In addition to the novel investigation of the safety of oil tankers using a revised wave scatter diagram, this study offers a new rapid method for calculation of extreme vertical wave bending moments based on the regression of the parameters of the Weibull function, used for the long-term probability distribution of wave-induced loads.

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Section: Results Of the Regression Analysis Are Presented In Tablementioning

confidence: 99%

“…1, as already reported in [12,14]. 5, while more details regarding the regression analysis can be found in [26]. θ, λ, and T Z are presented as a linear function of main ship particulars L, B, and block coefficient C b , using the following expression:…”

Section: Uncertainty In the Vertical Wave Bending Momentmentioning

confidence: 99%

Consequences of the Improved Wave Statistics on a Hull Girder Reliability of Double Hull Oil Tankers

Parunov,

Mikulić,

Ćorak

2024

JMSE

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“…Regarding different wave environments, the North Atlantic, which is considered as the design wave environment for ocean-going ships sailing without limitation, is of particular interest. Such analysis for the sailing route in the North Atlantic could be performed using, e.g., the ERA5 wave database [25].…”

Section: Discussionmentioning

confidence: 99%

“…while the system probability of non-exceedance of extreme vertical bending moment for fully correlated sea states along the route P ne,FC is [25]:…”

Section: Methods For the Prediction Of Extreme Wave Loadsmentioning

confidence: 99%

Method for Prediction of Extreme Wave Loads Based on Ship Operability Analysis Using Hindcast Wave Database

Petranović

Mikulić

Katalinić

et al. 2021

JMSE

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The method for the prediction of extreme vertical wave bending moments on a passenger ship based on the hindcast database along the shipping route is presented. Operability analysis is performed to identify sea states when the ship is not able to normally operate and which are likely to be avoided. Closed-form expressions are used for the calculation of transfer functions of ship motions and loads. Multiple operability criteria are used and compared to the corresponding limiting values. The most probable extreme wave bending moments for the short-term sea states at discrete locations along the shipping route are calculated, and annual maximum extreme values are determined. Gumbel probability distribution is then fitted to the annual extreme values, and wave bending moments corresponding to a return period of 20 years are determined for discrete locations. The system reliability approach is used to calculate combined extreme vertical wave bending moment along the shipping route. The method is employed on the example of a passenger ship sailing across the Adriatic Sea (Split, Croatia, to Ancona, Italy). The contribution of the study is the method for the extreme values of wave loads using the hindcast wave database and accounting for ship operational restrictions.

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“…These studies consider the influence of global issues, technological changes, and climatic changes on the deployment of marine structures. Some of these studies used different weather conditions for different sea states to assess the performance of marine hoses [28][29][30][31][32][33][34][35][36][37][38]. Aside from environmental conditions, the recent COVID-19 pandemic caused some changes in the trends of production, energy generation, distribution, supplies, and consumption [39][40][41][42][43][44][45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Scientometric Review and Thematic Areas for the Research Trends on Marine Hoses

et al. 2022

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For over three (3) decades, there has been an increase in research on energy sources from the production of oil using flexible marine risers, such as marine hoses. Marine hoses are conduits for special use as rubberized structures with hybrid polymer composites for offshore platforms in the oil and gas industry. This scientometric study uses qualitative, quantitative, and computational approaches. Data were retrieved using a research methodology that was created for this study using the SCOPUS and Web of Science (WoS) databases. This study provides a bibliometric literature review on marine hoses with an emphasis on the advancements made in the field from recent developments, geographical activity by countries, authorship histories, partnerships, funding sources, affiliations, co-occurrences, and potential research areas. The study found that the USA had the most publications, but there were fewer co-occurrences with connections outside the cluster. Due to the difficulty of adaptation, acceptability, qualification, and deployment of marine hoses in the offshore marine industry, this topic contains more conference papers than journal papers. Therefore, more funding sources and collaborations on marine hoses are required to advance the research. This study makes a contribution to scholarship on advances made in petroleum exploration and production for (un)loading hoses.

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The effect of spatial correlation of sea states on extreme wave loads of ships

Cited by 6 publications

References 16 publications

Consequences of the Improved Wave Statistics on a Hull Girder Reliability of Double Hull Oil Tankers

Consequences of the Improved Wave Statistics on a Hull Girder Reliability of Double Hull Oil Tankers

Method for Prediction of Extreme Wave Loads Based on Ship Operability Analysis Using Hindcast Wave Database

Scientometric Review and Thematic Areas for the Research Trends on Marine Hoses

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