about the boom hoisting of crane at construction site and blue sky by emphasizing at boom crane detail and sling

arrangement assembly backdrop blue boat boom business capacity cargo cock commerce commercial components configuration construction container control crane cranes detail diagram dock equipment export extension freight freighter goliath hanover harbor heavy hoist hoisting import industrial industry inspection integrity lifting load logistics machinery maintenance mechanism nautical ocean operation operations operator outdoors port practices procedures reeving rigging safety sea ship shipping site sky skyward sling standards steel structural structure technology trade transport transportation valve vessel view waste water waterfront waterway weight