The gantry will be lifted onto the vessel. 
The gantry will be lifted on turntable. 
A special seal will be installed on each one of the legs of the gantry to ensure tightness between the gantry and turntable. 
Installing will be at yard stage

The gantry will be lifted onto the vessel.
The gantry will be lifted on turntable.
A special seal will be installed on each one of the legs of the gantry to ensure tightness between the gantry and turntable.
Installing will be at yard stage