spectral and seakeeping analyses of a containership
This project was one of several similar projects done for a French shipowner who was seeking a seagoing permit for its inland containership. Le Havre is a site of one of Europe's largest container terminals where large Transatlantic containerships deposit thousands of containers every day. Some of these containers are then shipped via the Seine to inland France aboard smaller inland containerships. In order to reach the Seine estuary, the inland containerships must cross a 25-km stretch of the sea. A seakeeping analysis is necessary in order to determine if an inland containership can withstand the combined effects of waves and winds without compromising the safety of the crew and the cargo.
This particular study was quite challenging because of the uncertainties in both the longitudinal distribution of the cargo and the vertical position of the containers' centers of gravity. Consequently, total of 12 loading scenarios were examined for the same desired draft. The seakeeping analysis involved the study of the ship's absolute and relative motions, rolling amplitude, bending moment and torsion for the operational and zero speeds in the frame of the probabilistic analysis of the real life sea conditions. A stability analysis was also performed.
The computer programs used included HYDROSTAR for the spectral and seakeeping analysis, VERISTAR for the studies of stability and MARS for the structural analysis.
This particular study was quite challenging because of the uncertainties in both the longitudinal distribution of the cargo and the vertical position of the containers' centers of gravity. Consequently, total of 12 loading scenarios were examined for the same desired draft. The seakeeping analysis involved the study of the ship's absolute and relative motions, rolling amplitude, bending moment and torsion for the operational and zero speeds in the frame of the probabilistic analysis of the real life sea conditions. A stability analysis was also performed.
The computer programs used included HYDROSTAR for the spectral and seakeeping analysis, VERISTAR for the studies of stability and MARS for the structural analysis.