Ceona Amazon
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The Ceona Amazon is a combined pipe and cable layer that was originally built for the British company Ceona Services and is now owned by McDermott . It was delivered by Lloyd Werft Bremerhaven at the end of 2014. The special deck equipment for pipe laying was installed at the Dutch company Huisman.
Technical specifications
The hull was created at the Polish Crist shipyard . The ship is 199.4 meters long, 32.2 meters wide, has a draft of 8.0 meters and is powered by a diesel-electric system. It consists of six MAN diesel engines that drive generators with a total output of 28,000 kW. For the propulsion system, three azimuth stern thrusters each with an output of 3,500 kW, three retractable azimuth bow thrusters with an output of 2,400 kW and a tunnel bow thruster with an output of 1,800 kW were installed. The service speed is 12 kn and the max. Speed 14 kn. There are 16 single cabins and 92 double cabins available to accommodate the 200 people (crew and service personnel for pipe laying).
Further equipment
The special ship is equipped with special facilities for laying pipelines; around 5500 t of pipe material can be stowed below deck and around 3000 t of pipe material on deck. There is a helicopter landing pad in the foredeck , and two ROVs ( Remotely Operated Vehicles ) are also part of the equipment, which can work at depths of 3000 m. The associated moon pool measures 8 × 13.5 m. There are also two sea-state compensated 400-ton heavy-duty cranes, which are supplemented by a 30-ton articulated boom crane. They are used for transshipment, pipe laying and the installation of large underwater systems down to water depths of 3,000 meters. A Kongsberg DP system controls the various propulsion organs and ensures dynamic positioning during pipe laying and offshore crane work. An anti-heeling system from Hoppe with 3 × 1700 m³ / h serves to compensate for heeling. A reverse osmosis system with 2 × 50 m³ / day was installed to generate drinking water and the ballast water treatment system from MMC has a capacity of 300 m³ / h.
Pipe laying at Ceona Amazon
There are two basic methods for underground pipe laying, the S laying method for shallow water and the J laying method for great water depths. With small pipe diameters, the pipeline can be unwound from a large spool and laid.
At Ceona Amazon , the G process, a combination of the J and S installation process, is used for the larger pipe diameters (> 0.6 m). The pipe string is produced using the S process in the welding line on deck, then fed into the stern wheel, deflected and guided up into the laying tower and from here lowered to the seabed using two tensioning devices (up to 570 t) using the J laying process.
Current
The offshore company Ceona, which was only founded in 2012 by majority owner Goldman Sachs Capital Partner, filed for bankruptcy in the summer of 2015 and therefore the pipelayer was on after delivery. In spring 2017, the Houston-based offshore company McDermott, which operates a smaller pipelayer with the Lay Vessel North Ocean 105 , acquired Ceona Amazon .
