Fatigue analysis of SPM mooring due to lenght of mooring line and direction of wave incident

Single Point Mooring or contraction SPM is Floating structures that are commonly used in deep water .SPM used for mooring of vessel and transport of oil and gas production from the shore by pipeline to the tanker . The main task of this kind of floating structures, spm mooring should be considered. Properly mooring increase efficiency and ability to perform the task in different environmental conditions for SPM. Floating structures for exposure to harmonic loads such as wave load, should be fatigue analysis. One of the important factors that affect the fatigue is length of mooring line as length of mooring line changes is inversely related to fatigue of mooring line changes. in this paper, SPM with 3-line mooring modeled with ANSYS-AQWA and fatigue analysis of mooring line has been studied in 4 condition of incident wave and 5 condition of length of mooring line.