On the seakeeping response analysis of a large off-shore drillship
For an off-shore structure the operation safety must be assessed by several criteria as those specific for the seakeeping, ship oscillations in irregular waves. In this study the seakeeping analyses of an off-shore drillship, with 210 m length and two displacement conditions, are carried out. The sh...
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Galati University Press
2016-12-01
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Series: | Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding |
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Online Access: | http://www.gup.ugal.ro/ugaljournals/index.php/fanship/article/view/1100 |
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doaj-1dd93d0aaa424d2fb2db40e32b0bcfc62020-11-25T01:34:02ZengGalati University PressAnnals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding1221-46202668-31562016-12-013951601100On the seakeeping response analysis of a large off-shore drillshipLeonard Domnișoru0“Dunarea de Jos” University of GalatiFor an off-shore structure the operation safety must be assessed by several criteria as those specific for the seakeeping, ship oscillations in irregular waves. In this study the seakeeping analyses of an off-shore drillship, with 210 m length and two displacement conditions, are carried out. The short-term irregular waves are modelled by the ITTC power density spectrum, for a full set of 360 deg oblique waves condition and maximum significant wave height of 12 m. The numerical seakeeping analyses are done by our own program DYN_OSC, based on a linear strip theory formulation, including heave, pitch and roll ship’s oscillation components. The first drillship seakeeping analyses are done for the zero speed case, specific to the drill operation into a research location. The second drillship seakeeping analyses simulate the navigation for several speeds between operation locations. Based on the numerical results of this study, the operation safety assessment of the off-shore drillship by seakeeping criteria is accomplished.http://www.gup.ugal.ro/ugaljournals/index.php/fanship/article/view/1100off-shore drillship, irregular oblique waves, seakeeping analysis, operation safety. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Leonard Domnișoru |
spellingShingle |
Leonard Domnișoru On the seakeeping response analysis of a large off-shore drillship Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding off-shore drillship, irregular oblique waves, seakeeping analysis, operation safety. |
author_facet |
Leonard Domnișoru |
author_sort |
Leonard Domnișoru |
title |
On the seakeeping response analysis of a large off-shore drillship |
title_short |
On the seakeeping response analysis of a large off-shore drillship |
title_full |
On the seakeeping response analysis of a large off-shore drillship |
title_fullStr |
On the seakeeping response analysis of a large off-shore drillship |
title_full_unstemmed |
On the seakeeping response analysis of a large off-shore drillship |
title_sort |
on the seakeeping response analysis of a large off-shore drillship |
publisher |
Galati University Press |
series |
Annals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding |
issn |
1221-4620 2668-3156 |
publishDate |
2016-12-01 |
description |
For an off-shore structure the operation safety must be assessed by several criteria as those specific for the seakeeping, ship oscillations in irregular waves. In this study the seakeeping analyses of an off-shore drillship, with 210 m length and two displacement conditions, are carried out. The short-term irregular waves are modelled by the ITTC power density spectrum, for a full set of 360 deg oblique waves condition and maximum significant wave height of 12 m. The numerical seakeeping analyses are done by our own program DYN_OSC, based on a linear strip theory formulation, including heave, pitch and roll ship’s oscillation components. The first drillship seakeeping analyses are done for the zero speed case, specific to the drill operation into a research location. The second drillship seakeeping analyses simulate the navigation for several speeds between operation locations. Based on the numerical results of this study, the operation safety assessment of the off-shore drillship by seakeeping criteria is accomplished. |
topic |
off-shore drillship, irregular oblique waves, seakeeping analysis, operation safety. |
url |
http://www.gup.ugal.ro/ugaljournals/index.php/fanship/article/view/1100 |
work_keys_str_mv |
AT leonarddomnisoru ontheseakeepingresponseanalysisofalargeoffshoredrillship |
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1725074092241977344 |