TEKNİK SEYİR HİZMETLERİNDE KAYNAKLARIN SİMÜLASYON MODELLEMESİ YÖNTEMİYLE OPTİMİZASYONU: RÖMORKÖR PARK YERİ SEÇİMİ

Suyollarında, kıyı tesislerinde ve açık deniz yapılarında deniz araçlarının manevra emniyeti ve verimliliği için kılavuzluk, römorkörcülük ve palamar hizmetlerine ihtiyaç duyulmaktadır. Bu hizmetler genel olarak "teknik seyir hizmetleri" (technical-nautical services) olarak isimlendirilmektedir. Teknik seyir hizmetleri kapsamında gemi ve deniz araçları için sunulan römorkörcülük hizmetlerinin verimliliği, teşkilatların işletme maliyeti ve hizmet kalitesi açısından son derece önemli bir konudur. Römorkör hizmetinin sunulma biçimi, hizmet talebini yerine getirme zamanı, hizmet sahasının büyüklüğü, çekme kuvveti yeterliliği, römorkör sayısı ve manevra kabiliyeti bu hizmetin başlıca kalite ölçütleri arasındadır. Bu araştırma, 2011 yılında Gemport Kılavuzluk ve Römorkörcülük Hizmetleri Teşkilatında Emniyet Kültürünü Güçlendirme Çalışmaları sırasında teşkilatın ihtiyacına yönelik olarak geliştirilmiştir. Araştırma, teşkilatın Gemlik Körfezi'nde sunmuş olduğu teknik seyir hizmetleri kapsamında kullanmış olduğu iki adet römorkörün "park" yerlerinin belirlenmesi amacıyla geliştirilmiştir. Araştırmada gemi trafiği varış zamanı verileri, gemi ölçülerinin dağılımı, limanlardaki yük elleçleme zamanlarına ait veriler ve hizmetin verilme şekli konusunda yapılan görüşmelerden elde edilen bilgiler kullanılarak bir algoritma geliştirilmiştir. Bu algoritma Promodel simülasyon programında test edilerek optimum römorkör park yerleri belirlenmiştir. Römorkörcülük hizmetinin verildiği sahada belirlenen bu en uygun park yeri noktaları, römorkörlerin park yerinden hizmet verme noktasına gidiş süresi ile hizmet verdikten sonra da park yerine dönecekleri süre toplamının optimizasyonuyla sağlamıştır.

SIMULATION OPTIMIZATION OF THE RESOURCES IN TECHNICAL/NAUTICAL SERVICES: SELECTION OF THE PARKING LOCATIONS OF THE TUGBOATS

Technical-nautical services such as pilotage, towage, and mooring are needed in order to ensure the safety and efficiency of ship manoeuvring at ports, In the scope of these services, efficiency of the towage service provided for the ships or maritime structures is an issue of utmost importance for the operating costs and service quality of towage organizations. The main quality criteria of towage service are the methods of towage services provided, response time of services, size of service area, pulling capacity, numbers and manoeuvrability of the tugboats. This research was developed in 2011as a response due to the needs of the Gemport Pilotage and Towage Services Organizations, during the “Project for Enhancement of Safety Culture in Pilotage and Towage Services” in Gemlik Bay. The aim of this study is to determine the optimum parking locations for two tugboats which are being used in towage service in Gemlik Bay. The optimization of parking locations was defined as an optimization of the travel times from “parking location” to “service commencement location” and from “service completion location” to “parking location” of the tug boats for all possible parking location combinations. In order to achieve the aim of the research, the data regarding the number of ship traffic at all jetties, arrival times of ships, sizes and durations at the berth of ships were gathered from Information Management System of Gemport Pilot Organisation. Towage services algorithm was developed using data obtained from interviews with marine pilots. A simulation model was developed using statistical data and interview. Afterwards simulation model was run in the Promodel Simulation Program for all parking location combinations of tugboats. As a conclusion, optimum parking locations were selected using simulation optimization outcome.

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