The Knuckle Boom Type Crane of Cylinder Luffing Type, produced by OPCO, is a specialized crane designed with Knuckle Jib and Articulated Jib structures that can be operated extensively in small areas. This is the main equipment used for special vessels with small installation space such as PSV, AHTS, Drillship, or FPSO, with a maximum crane capability of 150 tons and a work range of minimum 2m to maximum 48m.