A Special Structure: The Quadrant

Project: Quadrant Structure

Client: Shelf Subsea (Caldive)

Function: Hauling subsea data cable line from the installation vessel into the riser and up to Wheatstone platform.



The quadrant structure was fully designed by ABA Structure. The structure comprised of a steel skeleton mounted in a set of horizontal flanges giving it 360 degrees fine tuning abilities. This was necessary due to the extremely populated deck area with different equipment. The structure had to endure forces applied from the 3.5 tonnes tense cable on its rollers in two perpendicular plnes. The structure is successfully tested on June 2016.

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