The paper addresses a CALM (catenary anchor leg mooring) monobuoy arrangement. There are several monobuoys installed in deeper waters from 400 m to 1000 m or more. This increases the mooring line effects on the first order monobuoy behavior, and unlike the much larger drilling and production platforms they cannot be neglected. As shown, in a frequency domain approach, it is possible to devise restoring force effects, damping effects and even inertial ones. Hence, the full understanding of the behavior is only reached if the mooring lines are properly considered. Model tests, an ad hoc linear diffraction theory computer program (ProMono) and a fully nonlinear time domain computer program are used in the analysis.
Volume Subject Area:
Offshore Technology
Topics:
Frequency-domain analysis,
Mooring,
Computer software,
Damping,
Diffraction,
Drilling,
Water
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