On the Extreme Analysis Applied to Moored Floating Platforms

This paper presents an insight into some different methods for prediction of extreme response values of slender structures belonging to moored floating units. The methods investigated are: Weibull-tail fitting, SRSS, SRSS modified, LS and LS modified (API). All these methods are based on a single time series sample of the response parameter. The statistical uncertainty associated to each method is assessed by means of analyzing several independent simulations of the response parameter. Numerical examples include the top tension response analysis of two mooring lines: one connected to an FPSO in deepwater and the other to an FPSO in shallow water.