A Model of Determining the Closest Point of Approach Between Ships on the Open Sea

Vujičić, Srđan; Mohović, Đani; Mohović, Robert

doi:10.7307/ptt.v29i2.2197

Cited by 9 publications

(2 citation statements)

References 6 publications

(8 reference statements)

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“…A group of researchers from three American universities (The George Washington University, Rensselaer Polytechnic Institute and Virginia Commonwealth University), the so-called GWU-RPU-VCU group, has developed a dynamic computer simulation model for counting collision candidates with the aim of assessing ship collision risk in the "Washington state ferry" (WSF) system [67]. For each pair of ships, the model calculates the Closest Point of Approach (CPA) [68], encounter angle and the time of occurrence of the CPA on the basis of which the collision candidates are classified and counted. The model uses its own causation probabilities that are determined based on statistical data.…”

Section: Simulation Modelsmentioning

confidence: 99%

Quantitative Ship Collision Frequency Estimation Models: A Review

Čorić

Mandžuka

Gudelj

et al. 2021

JMSE

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Ship collisions are one of the most common types of maritime accidents. Assessing the frequency and probability of ship collisions is of great importance as it provides a cost-effective and practical way to mitigate risk. In this paper, we present a review of quantitative ship collision frequency estimation models for waterway risk assessment, accompanied by a classification of the models and a description of their main modelling characteristics. Models addressing the macroscopic perspective in the estimation of ship collision frequency on waterways are reviewed in this paper with a total of 29 models. We extend the existing classification methodology and group the collected models accordingly. Special attention is given to the criteria used to detect potential ship collision candidates, as well as to causation probability and the correlation of models with real ship collision statistics. Limitations of the existing models and future improvement possibilities are discussed. The paper can be used as a guide to understanding current achievements in this field.

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Section: Simulation Modelsmentioning

confidence: 99%

Quantitative Ship Collision Frequency Estimation Models: A Review

Čorić

Mandžuka

Gudelj

et al. 2021

JMSE

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show abstract

“…Many authors have conducted studies with the aim of determining the safe distance for CPA. The CPA depends on several factors but the primary are ship maneuverability, meteorological and oceanological conditions, and the area of navigation [11]. Therefore, the CPA may differ for certain area depending on each conditions.…”

Section: Introductionmentioning

confidence: 99%

Predicting Point of Collision and Estimating the Ship Movement as Evaluation Method of Collision Risk

2019

Maritime Safety International Conference (MASTIC 2018)

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Marine traffic safety has been an important research issue in recent years due to high number of maritime accident majorly ship collision. Measuring the collision risk can be useful for navigator to maneuver the ship based on appropriate decision for collision avoidance. The process of collision between vessels can be expressed by predicting the point where the ship would be likely to meet and the collision may occurs using the geometry of the ship's position. This study also utilized the ship trajectory to estimate the future position of the vessel and compared it with the predicted point in geometry calculation result. The collision risk will occur when ships meet in the same position in the same time based on the ship's movement prediction. Thus, the simplest model to evaluate the ship collision risk by using matrices and linear algorithm were performed. In this paper, Automatic Identification System (AIS) data is utilized and linear algorithm is employed to predict the ship movement. This study resulted the possibly position of collision and predicted the new coordinate's position of the ship in t time. The proposed method can be considered as a first step to conduct collision avoidance and to improve navigation of ships in narrow and shallow waterways.

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