Edda Fauna - Maintenance Vessel


The Edda Fauna is a new inspection, maintenance and repair vessel that was delivered to Norwegian management company Østensjø Rederi AS in early 2008.

The state-of-the-art vessel is owned by West Supply II KS and will spend the first part of its operational life under charter to Deep Ocean ASA, undertaking operations such as maintenance and repair work for StatoilHydro.

The vessel was completed and outfitted in the Aker yards at Brattvag, Norway, and has been designed for tasks requiring excellent manoeuvrability and station stability. The ship was designed by Skipstecknisk AS of Norway.

CAPABILITIES

The Edda Fauna was designed to undertake a variety of operations for the oil and gas industry, including ROT operations (using a specialised module handling system), inspections and remotely operated vehicle (ROV) operations. It will also handle light construction work, scale squeeze and pumping operations, and RFO tasks.

TECHNICAL

The ship has an overall length of 108.70m, a perpendicular length of 96.00m, a moulded breadth of 23.00m, a moulded depth 9.60m and a maximum draft of 7.80m. The displacement of the ship is 9,675 gross tonnage with a deadweight of 5,500t.

The deck has been configured with a loading capability to carry heavy equipment, including an inside area of 650m² and an outside area of 610m².

SPECIALISED EQUIPMENT

The Edda Fauna has been configured with a number of specialised equipment systems to increase its operational capabilities. There is a module handling tower that can be used in the hangar area (wave height below 5m), a skidding system for 60t modules on the main deck, a LARS handling system for ROVs, three moonpools and module/equipment handling (two for ROVs at 4.8 × 4.8m and one at 7.2 × 7.2m) and a fixed scale squeeze system.

The ship also has DE-ICE notation so that it can operate further north if required. There is also a helicopter deck designed to accept a Sikorsky S-92.

ACCOMODATION

The vessel has 65 cabins with a total of 90 beds. There are 38 single crew cabins with bathrooms, 26 double cabins with bathroom, captain’s cabin, ten offices with a total area of 300m², three operations rooms, a 270m² bridge, fitness room, cinema, ward room, laundry and several lounges.

PROPULSION AND POWER SYSTEMS

The vessel has port and starboard azipull thrusters (AZP 120) supplied by Rolls Royce Marine AS and Propulsion Ulsteinvik. The two azipull generate a power of 2 × 3,500kW and can propel the ship at a maximum speed of 16.5kt (although the service speed is about 15kt).

"The vessel will spend the first part of its operational life under charter to Deep Ocean ASA."

There are also two bow thrusters (2 × 1,500kW, TT2400), a manoeuvring retractable azimuth thruster arrangement (UL 2001/6100) as well as forward and aft electric tunnel thrusters for manoeuvring.

There are six Caterpillar Inc 3516C HD diesel engines for the generators (2,230 bkW-rated at 1,800 rpm giving a total generator set output of 13,380 bkw).

In addition, there are six AVK DSG86 generators (2,000 ekW with a 690V output at 60Hz with a total rating of 12,000 ekW). There is also a Caterpillar 3508 TA auxiliary generator (968 bkW, 1,800 rpm).

SHIP CONTROLS

The bridge controls are configured for the Rolls Royce manoeuvring systems. There are also load and discharge controls from Wartsila IAS. The ship’s dynamic positioning system is a Dynpos system AUTR from Kongsberg. Additional navigation equipment includes Atlas radars and nautical equipment, SAM Chart pilot electronic chart system (also SAM radar), Sailor radio station, AIS system, VDR system, Anschutz autopilot and a gyro compass.