Determining and visualizing safe motion parameters of a ship navigating in severe weather conditions

Szlapczynski, Rafal; Krata, P.

doi:10.1016/j.oceaneng.2018.03.092

Cited by 57 publications

(18 citation statements)

References 36 publications

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“…When determining this action distance, it is also important to take into account weather conditions: in severe weather the choice of manoeuvres may be limited and thus the remaining possible actions may have to be taken earlier. The choice of a particular evasive manoeuvre in heavy weather has been discussed in detail in [54]. In the current paper we are mostly interested in when to perform a safe manoeuvre.…”

Section: Determining Action Distances For Evasive Manoeuvres: the Methodsmentioning

confidence: 99%

“…Therefore simulation application does not bring any elements, which could affect overall accuracy of the presented method; the final accuracy depends strictly on the already mentioned accuracies of modelling ship's behaviour and the human reaction time (which is taken into account as a value set by a user). A separate complementary decision support tool enabling the navigator to choose a particular manoeuvre has been presented by the authors in [56] and then extended to deal with heavy weather in [54]. of manoeuvring characteristics of the own vessel.…”

Section: Determining Action Distances For Evasive Manoeuvres: the Methodsmentioning

confidence: 99%

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A Ship Domain-Based Method of Determining Action Distances for Evasive Manoeuvres in Stand-On Situations

Szlapczynski

Krata

Szlapczynska

2018

Journal of Advanced Transportation

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A ship encounter can be considered safe if neither of ships’ domains (defined areas around ships) is intruded by other ships. Published research on this includes optimising collision avoidance manoeuvres fulfilling domain-based safety conditions. However, until recently there was no method, using ship’s domain to determine exact moment when a particular collision avoidance manoeuvre can still be successfully performed. The authors have already proposed such method for give-way encounters. In the paper, documenting continuation of the research, another kind of scenarios is considered. This paper is focused on situations where the own ship is the stand-on one and the target is supposed to manoeuvre. The presented method uses a ship’s dynamics model to compute distance necessary for a manoeuvre successful in terms of avoiding domain violations. Additionally, stability-related phenomena and their impact on possible manoeuvres in heavy weather are taken into account. The method and applied models are illustrated in a series of simulation results. The simulations cover various examples of stand-on situations, including encounters in heavy weather conditions. Discussed manoeuvres may be limited to course alteration or may combine turns with speed reduction.

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Section: Determining Action Distances For Evasive Manoeuvres: the Methodsmentioning

confidence: 99%

Section: Determining Action Distances For Evasive Manoeuvres: the Methodsmentioning

confidence: 99%

A Ship Domain-Based Method of Determining Action Distances for Evasive Manoeuvres in Stand-On Situations

Szlapczynski

Krata

Szlapczynska

2018

Journal of Advanced Transportation

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“…This publication comprises a set of remarks and advices for the avoidance of dangerous states at sea. The dangerous phenomena considered in this work are: Recalling the methodology proposed in [9,10], the dangerous zones can be highlighted in the polar plot representation of Figure 3 for an exemplary case. This identifies the dangerous configurations of speed and course for a selected vessel: surf-riding and broaching-to in blue, synchronous rolling and parametric rolling in red and successive high-wave attack in green.…”

Section: Cost 3-navigation Riskmentioning

confidence: 99%

“…Reference systems in the open literature [3,4,7] use the navigation safety guidelines [8] for the definition of navigation constraints, which limit the areas where the navigation is allowed and not allowed based on the METOC conditions and the derived navigation conditions. In contrast to these reference systems [3,4,7] and similar to the approach discussed in [9,10], the focus of our paper is on the translation of the navigation safety guidelines [8] into a safety criterion to be minimized within a multi-criteria optimization setup. This design choice is based on the fact that the navigation safety of a route is usually determined by the vessel operator during the decisional stage.…”

Section: Introductionmentioning

confidence: 99%

Weather-Routing System Based on METOC Navigation Risk Assessment

Fabbri

Vicen-Bueno

2019

JMSE

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This paper presents a novel weather-routing system based on a multi-criteria setup. The set of 3 conflicting criteria is: travel time, ship navigation added resistance (caused by wind and waves), and navigation risk/safety. To this aim, the International Maritime Organization (IMO) safety guidelines are exploited for the design of navigation risk criterion as a function of the METeorological and OCeanographic (METOC) and sailing conditions. This risk is directly integrated into the multi-criteria setup, as an innovative alternative to the systems proposed in the open literature. The proposed methodology is tested in a real operational scenario in the Mediterranean Sea. The obtained results show how the proposed system provides alternative routes with minimum risk to the decision-makers, as well as other different alternative routes minimizing the other criteria.

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“…Harsh weather and its impact on ship routing and navigation has been discussed in [3,4,6,16]. Similarly, the impact on ships' behaviour and safety was researched in [1,10,19], the application to collision avoidance in [22] and routing of sailing vessels in [23,30,31]. In general, it might be safely stated that weather data is nowadays used in a majority of navigational and ocean engineering research problems.…”

Section: Introductionmentioning

confidence: 99%

Review of Weather Forecast Services for Ship Routing Purposes

Życzkowski

Szlapczynska

Szlapczynski

2019

Polish Maritime Research

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Weather data is nowadays used in a variety of navigational and ocean engineering research problems: from the obvious ones like voyage planning and routing of sea-going vessels, through the analysis of stability-related phenomena, to detailed modelling of ships’ manoeuvrability for collision avoidance purposes. Apart from that, weather forecasts are essential for passenger cruises and fishing vessels that want to avoid the risk associated with severe hydro-meteorological conditions. Currently, there is a wide array of services that offer weather predictions. These services include the original sources – services that make use of their own infrastructure and research models – as well as those that further postprocess the data obtained from the original sources. The existing services also differ in their update frequency, area coverage, geographical resolution, natural phenomena taken into account and finally – output file formats. In the course of the ROUTING project, primarily addressing ship weather routing accounting for changeable weather conditions, the necessity arose to prepare a report on the state-of-the-art in numerical weather prediction (NWP) modelling. Based on the report, this paper offers a thorough review of the existing weather services and detailed information on how to access the data offered by these services. While this review has been done with transoceanic ship routing in mind, hopefully it will also be useful for a number of other applications, including the already mentioned collision avoidance solutions.

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Determining and visualizing safe motion parameters of a ship navigating in severe weather conditions

Cited by 57 publications

References 36 publications

A Ship Domain-Based Method of Determining Action Distances for Evasive Manoeuvres in Stand-On Situations

A Ship Domain-Based Method of Determining Action Distances for Evasive Manoeuvres in Stand-On Situations

Weather-Routing System Based on METOC Navigation Risk Assessment

Review of Weather Forecast Services for Ship Routing Purposes

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