Blue Viking

New name: NAO Viking. A medium-sized platform supply vessel with an optimum combination of fuel efficiency and deadweight, and a capacity and performance that approaches those of larger PSVs. It can take on most of the tasks usually handled by slightly larger PSVs, but at a lower operating cost.

Vessel type

Platform supply



Built by

Ulstein Verft AS



Owned by

Nordic American Offshore

Yard number


Designed by

Ulstein Design & Solutions AS

Ordered by

Blue Ship Invest AS

Operated by

V. Ships

IMO Number


Principal dimensions

83.4 m
18 m
Dead weight:
4,087 tonnes
Draught (max):
6 m
Speed (max):
15.6 kn
22 POB
Deck area:
850 sqm

Note: Subject to selected variant configuration


Fuel oil (MDO):
1425 cbm
Fresh water:
1050 cbm
Ballast water / Drill water:
1770 cbm
Liquid mud (sp. gr. 2,8 t/m3):
1300 cbm
Brine (sp. gr. 2,5 t/m3):
1300 cbm
Cement (4 tanks):
254 cbm
LFL* (4 tanks):
153 cbm
Base oil :
259 cbm
1023 cbm


  • DNV 1A1, Offshore Service Vessel Supply, SF, E0, DYNPOS-AUTR, CLEAN DESIGN, COMF-V(3), COMF-C(3), LFL*, NAUT-OSV(A), DK(+), HL(+), ICE-C, OILREC

Featured solutions

Ship history

The ship investment company Blue Ship Invest, a part of Ulstein Group, ordered ten platform supply vessels of the PX121 design in the period 2010-2014. Eight have been acquired by Nordic American Offshore (NAO).

'Blue Viking' was delivered to BSI on 19 January 2015, and further to Nordic American Offshore (NAO) on 26 January 2015, together with a sister vessel, 'Blue Storm.' The name of the vessel was changed to 'NAO Viking', IMO 9722522.

The vessel is number 8 in NAO’s fleet of PX121 designs, and is quite similar to the seven previous vessels, apart from its adaptation to the Norwegian Maritime Authority’s emergency manual NMD rescue (200), and alterations to satisfy requirements for oil recovery, minor outfitting changes and the installation of a larger crane.

Overview all eight BSI vessels now owned by NAO:

Yno 289 NAO FIGHTER - delivered January 19, 2012, original name Blue Fighter.
Yno 294 NAO PROSPER - delivered on September 6, 2012, original name Blue Prosper.
Yno 296 NAO THUNDER - delivered May 13, 2013, original name Blue Thunder.
Yno 297 NAO POWER - Delivered on March 6, 2013, original name Blue Power.
Yno 298 NAO GUARDIAN - delivered June 28, 2013, original name Blue Guardian.
Yno 299 NAO PROTECTOR - delivered September 23, 2013, original name Blue Protector.
Yno 303 NAO STORM - Delivered January 19, 2015, original name Blue Storm.
Yno 304 NAO VIKING - Delivered January 19, 2015, original name Blue Viking.

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