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Projektowany port do obsługi morskich farm wiatrowych w Świnoujściu – analiza ryzyka nawigacyjnego

100%

Gucma S. , Gralak R.

2021

tom nr 2

76--83

Prezentacja projektu portu w Świnoujściu przewidzianego do obsługi statków instalujących oraz serwisujących turbiny wiatrowe na Bałtyku w polskiej strefie ekonomicznej. Opracowanie specjalnych kryteriów bezpieczeństwa nawigacji dla statków tego typu oraz przeprowadzenie analizy ryzyka nawigacyjnego w celu zwymiarowania akwenów portowych dla tych statków oraz określenia warunków ich bezpiecznej eksploatacji podczas manewrów wejścia i wyjścia z portu.

Presentation of the project of the port in Świnoujście planned to handle ships for installing and servicing wind turbines in the Baltic Sea in the Polish economic zone. Development of safety criteria for this type of ships and carrying out a navigational risk analysis for dimensioning of the port basins and channels for chosen ships and defining the conditions for their safe operation, during port entry and departure manoeuvres.

Assessment of ship manoeuvring safety in waterway systems by relative navigational risk

80%

Gucma S. , Ślączka W. , Bąk A.

tom Vol. 64, iss. 4

119--134

The safety of vessels navigating in the sea waterway system is ensured by fulfilling the acceptable restrictions called safe ship operation conditions in that system. The assessment of navigation safety is particularly important when the conditions for safe operation of ships in the waterway system are changed concerns increasing the maximum parameters of vessels, increasing the allowable hydrometeorological conditions or changing the minimum tug assistance. The article presents a method for assessing navigation safety when the conditions for the safe operation of vessels in the waterway system get changed. The method uses two indicators, which are difference in navigation risks and relative navigation risk. To determine the navigational risk, algorithms were developed for calculating the probability of accidents caused by the deterioration of navigation conditions and technical failure of ship equipment and tugs. Another algorithm was developed for calculating the consequences of the accidents that involve blocking a waterway by a ship anchoring in an emergency, grounding, impact of the ship against a port structure or moored ship and a collision with another ship in motion. The method developed for assessing navigation safety by means of relative navigation risk can be used in practice when changing the conditions for safe operation of vessels in the waterway system and when the system is modernized. Navigational safety management is a decision process that is implemented in the loop presented in the article. The acceptable risk is determined on the basis of vessel traffic intensity and ship parameters defined by safe operation conditions for a given waterway system. Relative navigational risk may be used in assessment and comparison of various conditions of safe ship operation. The probability of an accident caused by ship's moving outside the available navigable area due to technical failures of ship equipment or tugs is determined, depending on the type of port waterway and the manoeuvres performed.

Areas of emergency maneuvers and the navigational risk of accidents in fairways due to ship technical failures determined by the ship movement simulation method

80%

Gucma S. , Gralak R. , Muczyński B.

Zeszyty Naukowe Akademii Morskiej w Szczecinie

2020

tom nr 61 (133)

39--47

The identification of navigational risks of accidents in fairways is a basic principle for the construction or modernization of waterways in restricted waters and when the conditions of safe operation change. The estimation of navigational risk requires the evaluation of the consequences of accidents occurring in fairways: grounding, impact against a vertical shore, port/offshore structure or moored ship. When determining the consequences of these accidents, it is necessary to know the emergency maneuvering area and the speed of the ship at the time of the accident. The method of ship movement simulation in real time was used to determine the parameters of emergency maneuvering areas and the speed of vessels during the maneuvers. The results of the simulation experiment include full form vessels (bulk carriers, tankers) with a capacity ranging from 5,000 DWT to 100,000 DWT. The presented results of simulation tests enabled the evaluation of probability and consequences of ships’ accidents in fairways resulting from technical failures of ships’ steering equipment, allowing to assess the navigational risk for ships sailing through different types of fairways (approach channels, port entrances and inner port fairways).