(Appendix-2) 
Upper part of Blow-out Preventer (BOP) hauled on the ship. Middle cylinder is bended outside.
 
(Appendix-3)
Damages on Hydraulic Connector of upper BOP. Photograph of 2 cylinders. The cylinder (stainless-steel rod-like part) on the back is bended. Length of black part is about 1m.
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