In the revetment project of large diameter steel cylinder structure,it’s important to select the specifications of floating cranes during construction preparation,which directly affects the safety,quality and progress of the construction.Taking a large-scale artificial island project as an example,we describe the selection process,mooring layout,anchoring method,vibration sinking and one-shift costs of the revolving floating crane in detail.Compared with fixed derrick floating cranes,revolving floating cranes have advantages in large diameter steel cylinder vibration-sinking construction:1)Ships responsible for vibration hammers placing are not needed.2)Floating cranes won’t move frequently during hoisting and vibration sinking,which reduces risk as well as increases efficiency.3)It is beneficial to the positioning and deviation rectification of steel cylinders.