Oceanic

Oceanic  is a purpose-built offshore construction vessel (OCV) designed for deep-water installation and construction, and pipelay and heavy lift support. Optimised for jumper and umbilical installation work, she can also operate in arctic waters with ice class and anti-icing systems. The 129 m long, 25 m wide vessel is equipped with a full dynamic positioning (DP2+) thruster system for precise position keeping in congested areas, and boasts two moon pools (largest 7.2 m x 7.2 m), 4000-m water depth rated ROV systems and active heave compensated offshore cranes (largest with a capacity of 300 t).

Acquired by Allseas in 2016, the vessel is provided with a vast array of systems and equipment for worldwide operations in the oil and gas sector, including ROV activities for pipeline inspection and route survey, subsea installation work through moon pool and over-the-side, crane operations and ice breaking up to 0.8 m ice thickness.

Technical design

Vessel specifications

Length overall129 m, (422 ft) 
Length between perpendiculars117 m (384 ft) 
Breadth25 m (82 ft) 
Depth to main deck11 m (35 ft) 
Operating draught8 m (25 ft) 
Maximum speed16.5 knots 
Total installed power16,680 kW 
Thrusters3 x 3500 kW, 1 x 2000 kW and 1 x 1500 kW Rolls-Royce azimuth type 
Dynamic positioning systemLR DP (AA), triple redundant Rolls Royce DP2 system 
Accomodation120 persons  
HelideckMaximum take-off weight 15.6 t; suitable for Sikorsky S-92 helicopters 
Deck cranesKnuckle boom crane (AHC), 300 t (660 kips) at 14 m (46 ft)
Knuckle jib crane (AHC), 30 t (66 kips) at 8 m (26 ft)
 
ROV2 x 200 HP Schilling Robotics UHDII work class ROVs, depth rating 4000 m (13,000 ft), MacGregor (AHC) moon pool LARS with 3000 m (9850 ft) umbilical 
Clear deck space1650 m² 
ClassificationsLR+100A1 Offshore support ship, Helideck, *IWS, WDL (10 t/m² from Aft to Frame 100), Li, Winterisation C, ECO(TOC), CG, Ice class 1A FS, +LMC UMS, DP(AA), NAV1, IBS, CAC3 
Bow thrusters1 x 2000 kW and 1 x 1500 kW Rolls-Royce retractable azimuth thrusters, 2 x 1500 kW Rolls-Royce RIM-driven tunnel thrusters
Stern thrusters3 x 3500 kW Rolls-Royce azimuth thrusters
Moon poolsMain deck moon pool (7.2 m x 7.2 m), 2 x ROV moon pools (4.8 m x 4.9 m)
Port of registryValletta, Malta

Oceanic  projects