Motion response of floating structures is of great

\r\nconcern in marine engineering. Nonlinearity is an inherent property

\r\nof any floating bodies subjected to irregular waves. These floating

\r\nstructures are continuously subjected to environmental loadings from

\r\nwave, current, wind etc. This can result in undesirable motions of the

\r\nvessel which may challenge the operability. For a floating body to

\r\nremain in its position, it should be able to induce a restoring force

\r\nwhen displaced. Mooring is provided to enable this restoring force.

\r\nThis paper discusses the hydrodynamic performance and motion

\r\ncharacteristics of an 8 point spread mooring system applied to a pipe

\r\nlaying barge operating in the West African sea. The modelling of the

\r\nbarge is done using a computer aided-design (CAD) software

\r\nRHINOCEROS. Irregular waves are generated using a suitable wave

\r\nspectrum. Both frequency domain and time domain analysis is done.

\r\nNumerical simulations based on potential theory are carried out to

\r\nfind the responses and hydrodynamic performance of the barge in

\r\nboth free floating as well as moored conditions. Initially, potential

\r\nflow frequency domain analysis is done to obtain the Response

\r\nAmplitude Operator (RAO) which gives an idea about the structural

\r\nmotion in free floating state. RAOs for different wave headings are

\r\nanalyzed. In the following step, a time domain analysis is carried out

\r\nto obtain the responses of the structure in the moored condition. In

\r\nthis study, wave induced motions are only taken into consideration.

\r\nWind and current loads are ruled out and shall be included in further

\r\nstudies. For the current study, 2000 seconds simulation is taken. The

\r\nresults represent wave induced motion responses, mooring line

\r\ntensions and identify critical mooring lines.<\/p>\r\n","references":null,"publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 109, 2016"}