() are two vertical supports,usually steel,one each side of the centerline of the ship used to support booms.
The keel is a ship’s centerline. ()
Which of the following statements is FALSE concerning cranes being installed on the centerline of vessels().
A ship with the TCG off the longitudinal centerline inclines to an angle of().
At bottom dead center, the centerline of the connecting rod usually coincides with the()
At bottom dead center, the centerline of the connecting rod usually coincides with the()
The ship’s centerline is the ()(龙骨).