Analysis of Factors Influencing Ship's Maneuvering Times

Irfan Özkulluk; Selçuk Nas

doi:10.7225/toms.v12.n02.w05

Authors

Irfan Özkulluk Dokuz Eylül University, Graduate School of Social Science, İzmir, Türkiye
Selçuk Nas Dokuz Eylül University, Maritime Faculty, İzmir, Türkiye https://orcid.org/0000-0001-5053-4594

DOI:

https://doi.org/10.7225/toms.v12.n02.w05

Keywords:

Maritime transport, Ship behavior, Ship maneuvers, Ship maneuvering time

Abstract

Ship maneuvering is like a musical piece where many internal and external factors must be managed simultaneously in a synchronized manner. While the prolongation of the maneuvering time increases hydrocarbon emission and operating costs, its acceleration threatens the safety of the maneuver. In the literature, there are many studies on the factors affecting the ship maneuver, but the number of studies on the effect of the factors influencing the ship maneuvering time is insufficient. This paper deals with the factors affecting berthing and departure maneuvers of ships in port areas on maneuvering time. The effects of environmental factors, ship structures, and human factors on the maneuvering time were examined separately. Contrary to popular belief, it has been revealed that the wind speed and direction, which are environmental factors, do not affect the maneuvering time in general. On the other hand, it has been found that length over all (LOA) and gross tonnage (GT), which are structural features of the ships, affect the maneuvering time. In human factors, it has been proven that the mean of the maneuvering times performed by the maritime pilots at the same jetty differs significantly from each other. In addition, variable regression analysis was performed in order to explain the relationship between ship’s LOA and maneuvering time. For the purpose of this study, 3,998 ship maneuver data obtained from a pilotage organization were examined.

Author Biography

Selçuk Nas, Dokuz Eylül University, Maritime Faculty, İzmir, Türkiye

He graduated from Istanbul Technical University, Maritime Faculty, Deck Department in 1991. He worked as an officer and a chief officer at different types of merchant vessels between 1991 – 1999. He received his MSC degree in Maritime Business and Management in 1999. During his master studies, he focused on “The Role and Importance of the Simulator Based Training in the Maritime Education and Training”. He received his PhD degree in 2006. During his doctorate studies he focused on “decision making”, “risk management in maritime industry” and also “Individual Decision Making of Ship Masters in the Ship Operations”. He assigned as an Assistant Prof. in 2006. After PhD, He gives consultancy support to the harbor pilotage organizations on risk assessment concerning ship maneuverings in harbor. He has been teaching Coastal Navigation, Bridge Team Management, Risk Assessment, Collision Avoidance Rules, Tanker Operations, Liquid Cargo Handling Simulator Training since 1995 as a full time lecturer in Dokuz Eylül University, Maritime Faculty. Also he has been teaching Research Techniques in “The Graduate School of Social Science” and “The Graduate School of Science and Engineering” of Dokuz Eylul University. He served as a deputy director of the School of Maritime Business and Management from 2001 till 2009. He served as a vice dean of Dokuz Eylul University Maritime Faculty from 2010 - 2016. He has been a board member of Chamber of Marine Engineer since 2012. Now he is working as a full-time professor in Dokuz Eylul University Maritime Faculty.