J Navig Port Res > Volume 44(6); 2020 > Article
Journal of Navigation and Port Research 2020;44(6):453-459.
DOI: https://doi.org/10.5394/KINPR.2020.44.6.453    Published online December 31, 2020.
공기윤활시스템 적용 선박의 시운전 속도성능에 대한 불확실성 해석
서대원, 오정근
군산대학교 조선해양공학과 교수
Uncertainty Analysis of Improved Speed Performance of a Ship with an Air-Lubrication System in a Sea Trial
Dae-Won Seo, Jungkeun Oh
Professor, Department of Naval Architecture and Ocean Engineering, Kunsan National University, Korea
Correspondence:  Jungkeun Oh, Tel: 063)469-1857, 
Email: jkoh@kunsan.ac.kr
Received: 20 October 2020   • Revised: 10 November 2020   • Accepted: 19 November 2020
Abstract
A sea trial of the speed performance test is the one of the most important means of verifying a ship's performance, and the International Organization for Standardization established a standard for this test in 2015. Environmental disturbances such as wind and waves are always present under real sea conditions, however, so it is impossible to accurately estimate delivered horsepower under ideal conditions. These disruptive influences also make it difficult to evaluate the positive effect of recently developed energy-saving devices. In this study, uncertainty analysis of improved speed performance was carried out using Monte Carlo simulation to confirm the energy-saving efficiency of a ship equipped with an air-lubrication system. The findings showed the average power saving to be 3.2%, with the expanded uncertainty of ± 2.7% at a 95% confidence level (k=2).
Key Words: uncertainty analysis, air-lubrication system, Monte Carlo simulation, sea trial, speed performance
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