Evaluation of the powering extrapolation of a ship with a gate rudder system, including ageing and fouling effects

Köksal, ÇS, Çelik, C, Özsayan, S, Korkut, E and Atlar, M (2024) Evaluation of the powering extrapolation of a ship with a gate rudder system, including ageing and fouling effects. Ocean Engineering, 313. ISSN 0029-8018

Preview

Text Evaluation of the powering extrapolation of a ship with a gate rudder system, including ageing and fouling effects.pdf - Published Version Available under License Creative Commons Attribution. Download (6MB) | Preview

Abstract

This paper is based on the evaluation results of the calm water powering extrapolation of a 90-m general cargo vessel, originally built with a conventional rudder system (CRS) and later retrofitted with an innovative energy-saving device (ESD) known as the Gate Rudder System® (GRS), as part of the EU H2020 Project GATERS. The power estimation of the vessel was conducted using an adapted extrapolation procedure based on the scaled model tests of the vessel in a towing tank, validated by the three sets of sea trials. The first sea trial was performed when the ship was new, while the latter two were conducted during the project timeline, before and after the GRS retrofit. This paper aims to adapt the ITTC-78 power extrapolation method to predict the power performance of a ship retrofitted with the GRS for the first time in the maritime industry. Within this framework, the specific objectives of the paper are to describe and validate the proposed method using relevant power-speed data of the GATERS project target vessel (M/V ERGE) initially equipped with the CRS and later replaced by the retrofit GRS to achieve the project objective. Due to the real-world circumstances of retrofitting a 13-year-old ship with a novel energy-saving device, investigating the effects of ageing, hull roughness, and fouling has also become one of the key objectives of the paper. The findings demonstrate the ageing effect on the target ship's powering performance after retrofitting with GRS, highlighting the need for special consideration of power extrapolation alongside the hull fouling effects. The paper also demonstrates that the GRS is an emerging ESD, as a retrofit beside newly built ships with GRS, which improved the powering performance of the project target vessel, achieving a remarkable 25% power saving based on the comparative full-scale sea trials.

Item Type:	Article
Uncontrolled Keywords:	4015 Maritime Engineering; 40 Engineering; 7 Affordable and Clean Energy; 0405 Oceanography; 0905 Civil Engineering; 0911 Maritime Engineering; Civil Engineering; 4005 Civil engineering; 4012 Fluid mechanics and thermal engineering; 4015 Maritime engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions:	Engineering
Publisher:	Elsevier
Date of acceptance:	11 October 2024
Date of first compliant Open Access:	28 May 2025
Date Deposited:	28 May 2025 13:56
Last Modified:	28 May 2025 14:15
DOI or ID number:	10.1016/j.oceaneng.2024.119503
URI:	https://researchonline.ljmu.ac.uk/id/eprint/26449

View Item