Results 271 to 280 of about 6,046 (306)

Ship motion modeling and simulation in Ship Handling Simulator

2012 International Conference on Audio, Language and Image Processing, 2012
For developed irregular waves, wave heights or wave amplitudes are gained using the wave spectrums. Based on the hypothesis of Froude-Krylov, ship shape is predigested box. Wave forces and moments to ship motion can be calculated. They are added in the motion mathematical models, and ship six degrees of freedom mathematical models are given.
Zhang Xiufeng, Jin Yicheng, Yin Yong, Ren Hongxiang, Liu Xiuwen   +4 more
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Limiting Ship Motions for Small Ships in Heavy Seas

Ocean Engineering, 1997
Abstract This paper presents two independent methodologies for defining the seakeeping performance of vessels in various sea conditions. The results of a unique series of sea trials are compared to a new time domain computer program (FREDYN) that predicts ship performance and dangerous operating conditions in extreme seas.
Grant A. Rossignol, William L. Thomas
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On Nonlinear Ship Motions in Irregular Waves

Journal of Ship Research, 1966
It is shown that the transfer functions characterizing the nonlinear response of ships in irregular seas can be obtained from high order moments of the ship motions by an extension of standard spectral-analysis techniques. Hence, full-scale measurements can be used to determine, for example, the coefficients of excess wave resistance and lateral drift.
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The Theory of Ship Motions

1979
Publisher Summary This chapter highlights that the oceangoing ships are designed to operate in a wave environment that is frequently uncomfortable and sometimes hostile. Unsteady motions and structural loading of the ship hull are two of the principal engineering problems that result.
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Ship Motions in Shallow Water

Offshore Technology Conference, 1976
ABSTRACT When operating large ships in water depths only slightly greater than the draft, as super tankers at near-shore terminals, it is necessary to know precisely how much clearance is required for safety. Recent developments in hydrodynamics are applied to determine the motions of a ship due to waves and current
Alan C. McClure, R. Ray Nachlinger
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Comparison of ship motion theories with experiments for a container ship

International Shipbuilding Progress, 1974
Two calculation methods by which the ship motions, shearing forces, etc. in regular waves can be predicted are compared. The first method is analog to the method introduced by Korvin-Kroukovsky and Jacobs, while the second method is analog to the recently developed methods.
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A Ship'S Motion and the Incidence of Seasickness

Military Medicine, 1953
S W, HANDFORD, T E, CONE, S C, GOVER
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Forces Related to Motions of Moored Ships/ Analytical Methods of Moored Ship Motions

1988
The behaviour of moored ships in harbours, coastal areas or offshore is extremely complex, due to nonlinearities and dynamic effects. It is of vital importance to have methods available by which the behaviour of the moored ship can be predicted in the design stage, in order to determine the extreme loads in the worst conditions and to assess the ...
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Evacuation from ships : account for ship motion

1999
A transnational BriteEuram programme on evacuation of passengers from ships is presented. Recent disasters on ferries of the roll-on/roll-off type have led to higher requirements for safety.These requirements are formulated in terms of overall performance rather than performance of a number of isolated components.
Boer, L.C., Bles, W.
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The Motions of a Ship on a Sloped Seabed

Volume 1: Offshore Technology; Offshore Wind Energy; Ocean Research Technology; LNG Specialty Symposium, 2006
In standard diffraction theory it is assumed that the water depth is constant and that the seabed is infinitely large. To account for a local varying bathymetry in shallow water (as it can occur for offshore LNG terminals) it is sometimes considered to introduce a second fixed body on the seabed representing this bathymetry in diffraction theory. Based
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