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Proposal of new measures for risk assessment in navigation – a case study of the M/V Cosco Busan accident

Bošnjak Rino, Bukljaš Mihaela, Medić Dario, Vukša Srđan

Zeszyty Naukowe Akademii Morskiej w Szczecinie

2021

nr 67 (139)

9--15

This study discusses the marine accident involving the Cosco Busan, the container ship that hit the base of the Delta Tower of the San Francisco-Oakland Bay Bridge in November 2007. An analysis of the elements resulting in the accident and its consequences has been carried out, followed by an analysis of the navigational risk using mathematical and tabular values. Mathematical values refer to the navigational risk in a specific sailing area, while tabular values refer to the navigational risk using a risk assessment. The main goal of this research was to identify and propose new measures that are correlated with a risk assessment. These measures should be applied in areas where an accident takes place so that future marine accidents can be reduced.

Optimization of ship’s crew change schedule

Bošnjak Rino, Bukljaš Mihaela, Medić Dario, Vukša Srđan

Zeszyty Naukowe Akademii Morskiej w Szczecinie

2019

nr 59 (131)

29--33

Seaborne shipping must often cope with issues related to planning, ship scheduling, and arranging crews and optimal shipping routes between ports. Human resources departments typically plan ship crew shifts with regards to the seafarers’ right to vacation days. It is difficult to harmonize all the requirements and to satisfy both the seafarers and the company. Ideally, arrangements are made for the crewmember to sign off upon completion of a contract, with the vessel being at a port convenient to change the crew at a minimum cost. The latter may vary greatly, depending on the size of the crew to be replaced, the distance of the port from the crew destination, and the available taking-over crew at a specific place and time, etc. In these situations, linear programming (LP) is frequently used as a mathematical method to determine the optimal results. This study suggests the use of a linear-binary programming model in LINGO software to arrange the ship’s crew change schedule.