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.

Learn more about Allseas' fleet and equipment.

Technical design

Vessel specifications

Length overall 129 m, (422 ft) 
Length between perpendiculars 117 m (384 ft) 
Breadth 25 m (82 ft) 
Depth to main deck 11 m (35 ft) 
Operating draught 8 m (25 ft) 
Maximum speed 16.5 knots 
Total installed power 16,680 kW 
Thrusters 3 x 3500 kW, 1 x 2000 kW and 1 x 1500 kW Rolls-Royce azimuth type 
Dynamic positioning system LR DP (AA), triple redundant Rolls Royce DP2 system 
Accomodation 120 persons  
Helideck Maximum take-off weight 15.6 t; suitable for Sikorsky S-92 helicopters 
Deck cranes Knuckle 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)
 
ROV 2 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 space 1650 m² 
Classifications LR+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 thrusters 1 x 2000 kW and 1 x 1500 kW Rolls-Royce retractable azimuth thrusters, 2 x 1500 kW Rolls-Royce RIM-driven tunnel thrusters
Stern thrusters 3 x 3500 kW Rolls-Royce azimuth thrusters
Moon pools Main deck moon pool (7.2 m x 7.2 m), 2 x ROV moon pools (4.8 m x 4.9 m)
Port of registry Valletta, Malta

Oceanic  projects