First name: Polarcus Naila. A 14-streamer 3D seismic research vessel of the ULSTEIN SX124 design. The X-BOW combined with diesel-electric propulsion ensure excellent fuel consumption performance, sea-keeping and speed. Equipped with high-specification catalytic convertors, double hull and bilge water cleaning system.
Vessel typeSeismic research
Built byDrydocks World, Dubai
Owned byShearwater GeoServices
Designed byUlstein Design & Solutions AS
- 90.8 m
- 19 m
- Dead weight:
- 4000 tonnes
- Speed (max):
- 15 kn
- 69 POB
Note: Subject to selected variant configuration
- Fuel oil:
- 1650 cbm
- Fresh water:
- 1050 cbm
- Ballast water:
- 1900 cbm
- DnV +1A1, ICE-C, COMF-V(3), HELDK, NAUT-AW, E0, SF, CLEAN DESIGN, DynPos AUTR
'Polarcus Naila’ is the second of six seismic vessels constructed for Polarcus at Drydocks World - Dubai. The vessel is hull number 67 and was delivered on 24 February 2010.
The vessel´s first commission was to work off West Africa.
In 2014, the vessel underwent a conversion in order to be classified as a Special Purpose Ship. Furthermore, the scope of work included Ballast Water Treatment installation.
2021: In April 2021, Shearwater GeoServices acquired all six Polarcus vessels. The Polarcus Naila has changed name to 'SW Mikkelsen'.
2022, 20 October: Shearwater GeoServices and WesternGeco will jointly perform a newly awarded ocean-bottom node (OBN) three-month survey in the US Gulf of Mexico (GoM). Shearwater will deploy the SW Gallien and SW Mikkelsen as source vessels for the project, in combination with ROV node deployment.