Island Performer Equipped for Deep-Sea Subsea Work

By Eric Haun
Tuesday, July 08, 2014
Island Performer at the naming ceremony in the Geiranger fjord, Norway (Photo: Ulstein Group/Tonje Alvestad)

The Ulstein Verft subsea newbuild, Island Performer, was delivered today to shipowner Island Offshore. The flexible, state-of-the-art RLWI/IMR vessel will serve her first five years for FTO in the Gulf of Mexico.

“The vessel is customized to suit the scope of work in the FTO contract, in which RLWI (Riser-less Light Well Intervention) and IMR (Inspection/Maintenance/Repair) are the main tasks. She is able to perform operations at depths down to 3,000 meters, and the contracted work start at year’s end,” said Managing Director Håvard Ulstein, Island Offshore. “However, the very first assignment will be for the RogFast connection in Norway, in which the scope of work will be to investigate the sea bottom.”

“A large intervention tower is placed over the 8- by 8-meter main moon pool. She is equipped with a 250-metric-ton AHC (active heave compensated) offshore crane with a below-deck winch, and carries two deep-sea work ROVs, one to be launched through a dedicated moon pool and the other from the starboard side,” Ulstein explained.

Island Performer is the next generation subsea vessel from Ulstein, with large accommodation, storage and lifting capacities. She meets the highest standards for station keeping, redundancy and dynamic positioning (DNV GL class notation DYNPOS AUTRO, equivalent to DP3). Additionally, operability in DYNPOS AUTR (DP2) operational mode is maximized due to the Operation+ feature with a three-split configuration on main machinery. This set-up allows the vessel to retain system integrity and to continue operations uninterruptedly even after a substantial single system failure.

A shelterdeck is stretching all the way past the main moon pool and aft to the main crane. This increases the operational window for moon pool work and offers a shielded space for various equipment. Arranged on the shelter deck is a multi-skidding system for handling 100-metric-ton skidding pallets. The design also includes a heavy-load cargo deck for transporting equipment for a multitude of operations and construction work.

Island Performer has been developed and built according to the latest international regulations in which safety and comfort are two key issues. The vessel is equipped with resiliently mounted tunnel thrusters, and she carries the DNV GL class notation Comfort Class, COMF-V1, which ensures that noise and vibrations are kept at minimum. SCR (Selective Catalytic Reduction) catalysts are installed for all engines. An ESD system (Emergency Shut Down system) is installed in order to automatically close down systems in case of a hydrocarbon leakage. Island Performer has a crew capacity of 130, and in case of evacuation, each of the lifeboats on the starboard and port sides can accommodate everyone on board. Carrying the patented ULSTEIN X-BOW, the vessel has reduced speed loss in head seas, resulting in reduced fuel consumption and emissions to air.

Håvard Ulstein commented, “Island Offshore has previous experience with this design. The two SX121 designed vessels already in our fleet have proved to be very successful to us. We are certain that the Island Performer will achieve good results in complex deep water operations in the Gulf of Mexico.”

FTO is a joint venture between FMC Technologies, Edison Chouest Offshore and Island Offshore. CEO Gunvor Ulstein, Ulstein Group, said, “The three contracting companies combined have extensive competence in the advanced subsea segment. Together, we have developed a solution which is particularly adapted to both RLWI and IMR work, and we strongly believe that the Island Performer will prove her value in the years to come.”

Main characteristics:
SX121 DESIGN   
Length overall (approximately): 130 meters
Breadth molded: 25 meters
Dead weight w/tower mounted: 7,300 metric tons
Trial speed: 15.25 knots
Accommodation: 130 persons
Deck skidding system located on shelter deck: 100 metric tons unrestricted load
Main moon pool: 8 x 8 meters
ROV moon pool: 4.9 x 4.9 meters
300 metric ton SWL Module Handling/InterventionTower
250 metric ton Offshore Pedestal Crane (AHC) w/ main winch below deck
Dynamic Positioning System DNV AUTRO (IMO Class III / DP3)
Integrated bridge system
Electric equipment, Ulstein delivery: Switchboards, ULSTEIN COM communication system
ULSTEIN X-BOW hull line design

 

  • From left, Lady sponsor Pamela Williams, Inger Ulstein (mother of Håvard and Morten Ulstein in Island Offshore), and Morten Ulstein, Director of the Board in Island Offshore. (Photo: Ulstein Group)

    From left, Lady sponsor Pamela Williams, Inger Ulstein (mother of Håvard and Morten Ulstein in Island Offshore), and Morten Ulstein, Director of the Board in Island Offshore. (Photo: Ulstein Group)

  • Managing director in Ulstein Verft, Kristian Sætre, with two of his yard colleagues, Svenn Harald Walaunet and Roy Voldsund. (Photo: Ulstein Group)

    Managing director in Ulstein Verft, Kristian Sætre, with two of his yard colleagues, Svenn Harald Walaunet and Roy Voldsund. (Photo: Ulstein Group)

  • Island Performer (Photo: Ulstein Group/Marius Beck Dahle)

    Island Performer (Photo: Ulstein Group/Marius Beck Dahle)

  • Island Performer (Photo: Ulstein Group/Marius Beck Dahle)

    Island Performer (Photo: Ulstein Group/Marius Beck Dahle)

  • Island Performer, a state-of-the-art subsea vessel built and designed by Ulstein, has been delivered to Island Offshore. (Photo: Ulstein Group/Marius Beck Dahle)

    Island Performer, a state-of-the-art subsea vessel built and designed by Ulstein, has been delivered to Island Offshore. (Photo: Ulstein Group/Marius Beck Dahle)

  • From left, Lady sponsor Pamela Williams, Inger Ulstein (mother of Håvard and Morten Ulstein in Island Offshore), and Morten Ulstein, Director of the Board in Island Offshore. (Photo: Ulstein Group)
  • Managing director in Ulstein Verft, Kristian Sætre, with two of his yard colleagues, Svenn Harald Walaunet and Roy Voldsund. (Photo: Ulstein Group)
  • Island Performer (Photo: Ulstein Group/Marius Beck Dahle)
  • Island Performer (Photo: Ulstein Group/Marius Beck Dahle)
  • Island Performer, a state-of-the-art subsea vessel built and designed by Ulstein, has been delivered to Island Offshore. (Photo: Ulstein Group/Marius Beck Dahle)
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