In this study, I calculated and evaluated the tractive forces acting on mooring posts and bollards by carrying out the simulation of oscillation for moored ships subjected to wind loads. The object ships are 13 types of ballasted cargo ships ranging from 500 to 200,000 gross tonnage (GT). Based on the calculation results, I discussed the characteristics of the tractive forces of moored ships acting on the mooring posts and bollards. I also compared the calculated values with the standard ones of tractive forces of ships presented in the current technical standards. As a result, I confirmed that the standard values of tractive forces for ships of 100,000 gross tonnage (GT) or less, which are indicated in the current technical standards, are roughly set to the safe side. I also proposed that for ships of 100,000 to 200,000 gross tonnage (GT) for which the standard values of tractive forces are not specified, the standard values of the tractive forces should be set to 1,500kN or 2,000kN for bollards and 2,000kN for mooring posts, respectively.

Key Words: mooring post, bollard, tractive force, moored ship, wind load, simulation of oscillation