An airplane

Pentagon Australia – Subsea Tree Movement.

David Spridgeon

David Spridgeon

Managing Director, Australia

A Pentagon chartered Antonov AN-124 landed at Perth airport Sunday 02nd August. The is the second subsea tree for our Perth located customer. 

Pentagon Perth staff balanced the difficult task of executing the pre-approved plan whilst having ongoing dialogue with the customer throughout. The flight had been received from Pentagon Aberdeen who had loaded the Subsea Tree onto the Antonov on the previous Thursday at origin in Prestwick UK. 

The movement plan, created and submitted Pentagon Perth, encompassed all the requirements of the customer, crane company, airport authorities, ground handlers, fire trucks, support vehicles, lighting towers, Customs and Quarantine. The evening arrival meant that all offloading would occur after dark and to add to that, a large rainstorm came in just as the Subsea Tree was being loaded onto the transport vehicle.  Despite the heavy rain throughout, the assessors and Pentagon team managed to inspect and reinspect all the 18 chains required before the vehicle could depart to complete its final leg of the journey. The detailed planning provided for this offload led to Pentagon Perth being awarded the onward movement of these Subsea Trees from the test facility through to loading on to the FPSO support vessel at the wharf.

Pentagon Perth are now working on engineering plans for loading frames which are designed specifically to allow the next generation of Subsea Trees to be both safe in transit and to fit under the maximum door height of the AN124 aircraft. The trees have so far travelled 29,528kms between them.​​ 

A large cargo is lifted from the plane by crane
Large plane
Placing a large cargo on the truck
Placing a large cargo on the truck
Worker on board a transport plane
A large cargo is lifted from the plane

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