Chaintable be installed to Turntable below. 
Main bearing installed Chaintable through hole on Turntable. 
After installing both Chaintable and Main bearing, rotation test will be performed to measure the resisting torque of the Turret and to confirm that plateness of bearings remains within the allowable tolerance when the vessel rotates.

Chaintable be installed to Turntable below.
Main bearing installed Chaintable through hole on Turntable.
After installing both Chaintable and Main bearing, rotation test will be performed to measure the resisting torque of the Turret and to confirm that plateness of bearings remains within the allowable tolerance when the vessel rotates.