Oceanic Sirius

Seismic research vessel with a towing force of 140t during seismic operations. Ideally suited to acquisition of large 3D, 4D or high-resolution projects, utilizing a streamer configuration of up 16 streamers separated by 100 m or more. The 20 streamer winches are each capable of spooling 9 kilometers of streamers.

Vessel type

Seismic research



Built by

Ulstein Verft AS



Owned by

Oceanic Seismic Vessels

Yard number


Designed by

Ulstein Design Solutions AS

Ordered by

Oceanic Seismic Vessels

Operated by

CGG Veritas

IMO Number


Principal dimensions

106.5 m
24/28 m
Dead weight:
6013 tonnes
Draught (max):
8 m
Speed (max):
18.2 kn
70 POB

Note: Subject to selected variant configuration


Fuel oil (MDO):
3225 cbm
Fresh water:
565 cbm
Ballast water:
4690 cbm
Lub. oil:
156 cbm


  • DnV 1A1
  • E0
  • OPP-F
  • ICE-C
  • COMF-V(3)C(3)
  • COMF-C(3)
  • RP

Featured solutions

Ship history

Delivered by Ulstein Verft on 3 October 2011. Sister vessel to ‘Oceanic Vega’, delivered in 2010. Oceanic Seismic Vessels is a company owned by Eidesvik Offshore and the seismic operator CGGVeritas.

On occasion of the naming of the sister vessel, Jan Fredrik Meling, CEO at Eidesvik Offshore, stated: “She meets strict environmental standards. Equipped with state-of-the-art technology, the ship reduces harmful atmospheric emissions and prevents oil discharge through its double hull construction. We are very satisfied with the X-BOW® vessel Viking Poseidon previously delivered by Ulstein. The ship operates smoothly with minimal vibrations and movements. This grants optimal vessel comfort, which is very important for the working conditions of our seafarers."

Carrying an ICE-C classification, the Oceanic Sirius is able to operate in cold waters. The vessel is designed to stay permanently at sea, with five years´ docking intervals, and complies with the redundant propulsion notation from DNV. There are enough engines and generator sets to conduct maintenance at sea, and refuelling is carried out by dedicated support vessels. The vessel is equipped with straight shaft lines to the two CP propellers in a nozzle, each driven by two frequency converter-driven electric motors. This allows smooth speed control of around five knots during seismic acquisition. Two work boats are used for maintenance of in-water equipment.

Working environment
Oceanic Sirius complies with the Clean Design demands from DNV, and with the SPS requirements for up to 60 persons. There are 52 single cabins and only nine double cabins. The mess room, galley and the four dayrooms have large windows facing the sea to add comfort for the crew. The vessel is equipped with a helideck to facilitate an efficient crew change. The X-BOW® results in lower added resistance and smoother bow immergence. This leads to reduced operational disturbances or involuntary speed reduction.

Instrument room The instrument room is located at the stern, with large windows facing the sea. It is placed directly over the seismic area, with a direct view of the streamer deck.

2017: Still active - IMO 9459565

Please contact us for more information

Ulstein Verft AS

P. O. Box 158
NO-6067 Ulsteinvik

Tel: +47 7000 8000