The concept of Boom bar
Jul 23, 2018

The ship Hanging rod (Derrick) is a part of the hanger device, and the hanger device is a kind of landing equipment composed of a derrick, a lifting column, a landing rigging and a winch. The derrick device can be divided into two kinds, light and heavy, depending on the weight. Safety Work Load S.W.L (safe working load) a derrick that is equal to or less than 10x9.8 kn is called a light derrick, and a derrick with a safe working load S.W.L greater than 10x9.8 KN is called a heavy derrick.

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