awards support vessel of the year
primarily designed for subsea construction work, and its capability to fit two large cranes on deck (including the 400-tonne machines) allows it to carry out a wide range of jobs, ranging from cable and pipe laying, to ROV support, survey, well intervention and dredging, even extracting minerals in very deep water.
The vessel has also been designed and built
along with DYNPOS AUTRO notation for dynamic positioning (DP), the requirements of which the vessel comfortably exceeds to the extent that, should a system fail, it can remain in operation or continue to operate with DYNPOS AUTRO class intact. North Sea Giant has accommodation for 120 (which can be extended to provide space for nearly 200). Its structure is highlighted by a helipad on the bow and its bridge, which is placed on the sixth deck of the vessel. In total the ship has a working deck area close to 3,000m2.
to a very high standard and bears classification society Det Norske Veritas’s (DNV’s) Comf-V (3) and Clean notation,
The DP3 vessel was designed by Sawicon in Norway with a focus on redundancy, station- keeping capability and low fuel consumption. The multipurpose vessel is capable of subsea construction, cable lay, pipelay, ROV support/ survey, well intervention, module handling, coiled tube intervention, deepwater drilling and heavy lift. Mr Vik said one of North Sea Shipping’s main goals in building the new vessel was to have a vessel that could remain in DP mode longer than other vessels of its type. In fact, North Sea Giant is capable of operating far in excess of minimum DP Class 3 requirements.
The vessel is fitted with three separate engine rooms, three separate switchboard rooms and six separate propulsion rooms. So, if something goes wrong with one piece of
equipment, or maintenance is
required, the ship still has two other separate systems to keep it operating to DP Class 3 standards. “We are the first to have this arrangement
on an offshore construction vessel,” Mr Vik said. “Some people have said that we should call it DP Class 4, but this class does not exist. The performance of the VSPs is really amazing,” he told OSJ. “They will save us a lot of fuel, and the response time is really remarkable. “The other really exciting part about the
vessel is the crane. At 400 tonnes’ capacity it will be able to carry out a lot of work that other vessels cannot match.”
As he also explained, another important 24 I Annual Offshore Support Journal Conference and Awards 2012
www.osjonline.com Design
feature of the vessel is that the moonpool, which at 7.2m x 7.2m is already large, can be extended should a charterer require this, and the corners of the moonpool have been reinforced so that a tower can be fitted should this be required for well intervention, module handling or coiled tubing work. As also highlighted above, North Sea Giant made its operational debut in the offshore renewables market, and will be marketed
Another important feature of North Sea Giant is the vessel's huge deck
worldwide. In February 2012, Technip Norge declared an option on an existing contract for the 2012 season, and will now retain the vessel until the end of 2013. The vessel will be employed on a number of large subsea construction projects in the North Sea later this year, including flexlay duties on Goliat project in the Barents Sea. Technip also holds options for the vessel for 2014 and 2015. OSJ
North Sea Giant demonstrates its high level of manoeuvrability
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