eCite Digital Repository

Uncertainty analysis procedure for the ship inclining experiment

Citation

Woodward, MD and van Rijsbergen, M and Hutchinson, KW and Scott, A, Uncertainty analysis procedure for the ship inclining experiment, Ocean Engineering, 114 pp. 79-86. ISSN 0029-8018 (2016) [Refereed Article]


Preview
PDF
986Kb
  

Copyright Statement

Copyright 2016 The Authors. Published by Elsevier Ltd. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/

DOI: doi:10.1016/j.oceaneng.2016.01.017

Abstract

The inclining experiment is typically performed for all new-build ships and after any major refit. The purpose of the inclining experiment is to establish the vertical distance of the centre-of-mass of the ship above its keel in the lightship condition. This value is then taken as the point of reference when loading the ship, for establishing the Ĺin-serviceĺ stability, throughout the life of the ship. Experimental uncertainty analysis is commonly utilised in hydrodynamic testing to establish the uncertainty in a result as a function of the input variables. This can in turn be utilised to establish an interval about the result that may be expected to encompass a large fraction of the distribution of values that could reasonably be attributed to the measurement. This paper provides a methodology for calculating a confidence interval for the location of the centre-of-mass of a ship from an inclining experiment; and ultimately, in any load condition.

The uncertainty compared to an assumed metacentric height of 0.15ám is provided for four classes of ship: buoy tender 0.15 ▒ 0.15ám (▒ 100%); super yacht 0.150 ▒ 0.033ám (▒ 22.0%); supply ship 0.150 ▒ 0.047ám (▒ 31.3%), container ship 0.150 ▒ 0.029ám (▒ 19.3%), ropax 0.150 ▒ 0.077ám (▒ 100%).

Item Details

Item Type:Refereed Article
Keywords:inclining experiment, uncertainty analysis, ship stability, KG, GM
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Naval Architecture
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
Author:Woodward, MD (Associate Professor Michael Woodward)
ID Code:106852
Year Published:2016
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2016-02-23
Last Modified:2017-11-03
Downloads:38 View Download Statistics

Repository Staff Only: item control page