C470 / C471
TYPE: Service Operation Vessel (SOV)
HULL MATERIAL: Steel
OWNER: Østensjø Rederi A/S (Norway)

The first vessels of their kind ever built in Spain, these two SOVs will function as mother ships for wind turbine technicians as they perform maintenance work at offshore wind farms on the North Sea. To guarantee technician’s safety during transfer operations, both vessels are equipped with cutting-edge technology such as an a 23 m long, heave-compensated UPTIME “walk-to-work” gangway, a state-of-the-art 3D compensated crane and a CTV landing system with bunkering facility.

SOV LAUNCHING
EDDA MISTRAL
MAIN PARTICULARS
General information
Hull material Steel
Type Service Operation Vessel (SOV)
Delivery 2017
DNV-GL Class notation  ✠1A1, E0, BIS, SPS, DK(+), COMF-V(2)C(2), NAUT-AW CLEAN DESIGN, DYNPOS-AUTR
Dimensions
Length overall 81.1 m
Length between perpendiculars 72.1 m
Breadth moulded 17 m
Depth from main deck 7.2 m
Draught 5.4 m
Capacities
Fuel oil approx. 1000 m³
Fresh water approx. 450 m³
Deadweight at maximum draught approx. 1900 t
Cargo deck free area approx. 700 m²
Accommodation
Accommodation for 60
Cabins 58 single outward cabins + 2 single inside cabins
PERFORMANCE & MACHINERY
Propulsion  / Manouvering
Propulsion System Diesel-Electric / Rolls Royce Marine SAVe Cube system
Main Engines 4 x MTU 16V4000 M63L, 2240 kW each
Main Azimuth Propellers 2 x RRM US 205P20 CP, 1500 kW each
Bow Tunnel Thrusters 3 x RRM TT2000 DPN CP Super Silent , 925 kW each
Features
Maximum speed 13.5 Kn
Transit speed 11 Kn
EQUIPMENT
Deck / Special equipment
Deck crane 1 x Deck crane 2 t at 16 m
3D Motion Compensated Crane 1 x SMST 1 t at 26m Offshore Crane
Daughter craft 1 x Daughter craft  25 knots, 11 m length 10 persons capacity
Fast rescue craft 1 x MOB waterjet, 7 person capacity  220 HP
Helideck D=17.5 m
Active compensated motion gangway 1 x UPTIME 23 m length

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