The column structures of jacket platforms are occasionally reported to be struck by stand-by vessels,which render the anti-collision performance of the column structure to be priority during the de sign process.Although the NORSOK standard and the API specifications are among the most widely recog nized for the column structure design,their feasibility has not been fully approved by domestic users.To in vestigate the applicability of the previously mentioned specifications in the field of anti-collision,a n...