SHIP DOCKING AND SHIP LAUNCING

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SHIP DOCKING AND SHIP LAUNCING

CHAPTER ONE

INTRODUCTION

1.1. Dry-docking process

This paper describes the dry-docking performance measurement model based on Data Envelopment Analysis (DEA) methodology. DEA is a linear-programming-based, nonparametric, multi-criteria decision-making method. This method is applied to a population of thirty-four vessels under the final stage of construction (also called newbuildings), which are transferred by their own propulsion to the repair shipyard where they are lifted up from the water. During the vessel’s dry-docking, the underwater part is cleaned, checked, and recoated. Upon undocking, the vessel is ready for sea trials and a five-year service period until the subsequent dry-docking. The dry-docking project is a work-intensive, costsensitive process carried out in a remote place linked with logistic challenges. Therefore, the necessity for a performance measurement model creation has appeared. The management staff involved in the newbuilding dry-docking is faced with a huge amount of technical and business data. Consequently, the performance targets are needed for proper managerial decision-making.

The scope of the mainline of dry-docking activities is: i) vessel’s outer shell underwater part cleaning from fouling and grease by means of high-pressure washing and solvents application, ii) steelwork such as launching the supporting structure removal, and shell plates welding/grinding, iii) spot grit blasting to remove damages, and coating system application, usually four touch-ups and one full coat, iv) check-ups of the main propulsion, steering, sea chests, side thrusters and underwater sensors.

The dry-docking period is also used to carry out the vessel’s systems check before the upcoming sea trials. This time frame could be used to complete works that were delayed in the previous time while the vessel remained berthed in the shipyard. The place of vessel dry-docking depends on the following factors: i) dry-docking place suitability based on vessel weight and overall dimensions, ii) dedicated dry-dock facility availability in a scheduled time window, iii) forecasted weather conditions.

STATEMENT OF THE PROBLEM

The DEA methodology allows the dry-docking to be described as a process determined by its inputs and outputs for performance measurement purposes. The categorical DEA model is going to be used in order to refine the process research and efficiency measurement.

The performance measurement model is to be improved compared to the basic one formulated in the paper prepared by (Rabar et al., 2021).

OBJECTIVES OF THE STUDY

To understand the process of ship docking and ship launching
To understand how the activities of ship dockling and ship launching impacts the maritime industry

RESEARCH QUESTIONS