Uncertainty analysis procedure for the ship inclining experiment

OCEAN ENGINEERING

卷:114

Article

Woodward, Michael D.¹  van Rijsbergen, Martijn²  Hutchinson, Keith W.³  Scott, Andrew⁴ 

[1] Univ Tasmania, Australian Maritime Coll, Launceston, Tas 7250, Australia

[2] MARIN, Wageningen, Netherlands

[3] Ctr Adv Ind, Babcock Int Grp, Newcastle Upon Tyne, Tyne & Wear, England

[4] Maritime & Coastguard Agcy, Newcastle Upon Tyne, Tyne & Wear, England

关键词: Inclining experiment;    Uncertainty analysis;    Ship stability;    KG;    GM;   

DOI  :  10.1016/j.oceaneng.2016.01.017

来源: Elsevier

【 摘 要 】

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 'in-service' 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 0.15 m is provided for four classes of ship: buoy tender 0.15 +/- 0.15 m (100%); super yacht 0.150 +/- 0.033 m (+/- 22.0%); supply ship 0.150 +/- 0.047 m (+/- 31.3%), container ship 0.150 +/- 0.029 m (+/- 193%), ropax 0.150 +/- 0.077 m (+/- 100%). (C) 2016 The Authors. Published by Elsevier Ltd.

【 授权许可】

Free