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Tropical cyclones avoidance in ocean navigation - safety of navigation and some economical aspects

Szymański M., Wiśniewski B.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2018

Vol. 12, no. 1

57--68

Based upon the true voyages various methods of avoidance maneuver determination in ship - cyclone encounter situations were presented. The goal was to find the economically optimal solution (minimum fuel consumption, maintaining the voyage schedule) while at the same time not to exceed an acceptable weather risk level.

Omijanie cyklonu tropikalnego przez statek

Wiśniewski B.

Prace Naukowe Politechniki Warszawskiej. Transport

2014

z. 101

149--160

Na akwenach objętych występowaniem cyklonów tropikalnych należy zachować procedury pozyskiwania informacji, identyfikacji niebezpieczeństwa, wykonania nakresów bezpiecznych kursów i prędkości statku celem uniknięcia obszaru zagrożenia cyklonem. Jedną z trudniejszych decyzji jest wybór kursu i prędkości statku przy przecinaniu się trasy statku z prognozowanym torem cyklonu.

On the waters where tropical cyclones may appear the procedures of obtaining information, hazard identification, and safety performance by plotting courses and vessel speed should be filled. One of the most difficult decision is to choose the course and speed of the ship when crossing the projected path of the storm.

Application of the 1-2-3 Rule for Calculations of a Vessel’s Route Using Evolutionary Algorithms

Wiśniewski B., Medyna P., Chomski J.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2009

Vol. 3, no. 2

143--146

An example is shown of the 1-2-3 rule application for calculations to determine a route avoiding tropical cyclones. The dynamic programming used is based on regularly received weather reports containing present and forecast data on tropical cyclones. The results were compared with the post factum calculated route which utilized only weather analyses concerning the relevant moments of the voyage and with routes calculated using the cyclone fuzzy domain as an area dangerous to navigation. The calculations were made in the evolutionary algorithms environment.