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NASE MORE : International Journal of Maritime Science & Technology, Vol. 70 No. 1, 2023.

Original scientific paper

https://doi.org/10.17818/NM/2023/1.5

Experimental Seakeeping and Uncertainty Analysis of Benchmark Ship Model in Regular Head and Beam Waves

Nandiko Rizal orcid id orcid.org/0009-0006-5018-8832 ; Institut Teknologi Sepuluh Nopember, Department of Marine Engineering, Kampus ITS - Sukolilo Indonesia Research Center for Hydrodynamics Technology - BRIN
Dian Purnama Sari ; Research Center for Hydrodynamics Technology - BRIN, Indonesia
Beny Cahyono ; Institut Teknologi Sepuluh Nopember Department of Marine Engineering Kampus ITS - Sukolilo, Indonesia
Dedy Dwi Prastyo ; Institut Teknologi Sepuluh Nopember Departement of Statistics Kampus ITS - Sukolilo, Indonesia
Baharuddin Ali ; Hydrodynamics Laboratory - BRI, Indonesia
Erdina Arianti orcid id orcid.org/0009-0006-9203-3185 ; Research Center for Hydrodynamics Technology - BRIN, Indonesia

Full text: english pdf 3.167 Kb

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Abstract

Confidence levels of the seakeeping experiment results can be assessed through uncertainty analysis. The seakeeping experiments with a free-running model system were carried out in the manoeuvring and ocean engineering basin (MOB) at the Indonesian Hydrodynamic Laboratory (IHL) using uncertainty techniques to improve the experiment quality. The method used is the International Organization for Standardization, Guide for Uncertainty of Measurements (ISO-GUM), type A and B uncertainty, which is the foundation for the uncertainty analysis for seakeeping experiment recommendations released by the International Towing Tank Conference (ITTC). This research aims to determine the combined uncertainty value of the seakeeping experiment on a benchmark ship model with a scale of 1:62, representing the full scale of 186 meters. Seakeeping testing is carried out under head and beam waves, each with regular waves at one wave height (Hs) with three different wave periods (Tw). The experimental seakeeping result, generally, has the same tendency in each heave, pitch, and roll motion mode. The expanded uncertainty with 95% confidence level of the RAO-Heave uncertainty in all period conditions is always less than 3%, RAO-Pitch uncertainty in all period conditions is always less than 1%, and RAO-Roll uncertainty in all period conditions is always less than 1.2%. These uncertainties are quite small.

Keywords

ISO-GUM; ITTC; Seakeeping experiment; ship model; uncertainty analysis

Hrčak ID:

295729

URI

https://hrcak.srce.hr/295729

Publication date:

27.1.2023.

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