Blue Protector

New name: NAO Protector. 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

Operated by

Remøy Shipping

IMO Number


Principal dimensions

83.4 m
18.0 m
Dead weight:
4108 tonnes
Draught (max):
6.69 m
Speed (max):
15.8 kn
23 POB
Deck area:
850 sqm

Note: Subject to selected variant configuration


Fuel oil (MDO):
1474 cbm
Fresh water:
1018 cbm
Ballast water / Drill water:
1671 cbm
Liquid mud (sp. gr.2,8 t/m3):
1307 cbm
Brine (sp. gr. 2,5 t/m3):
1307 cbm
Cement (4 tanks):
254 cbm
LFL* (4 tanks):
153 cbm
Base oil:
259 cbm


  • DnV 1A1
  • Offshore Service Vessel Supply
  • SF
  • E0
  • COMF-V(3)
  • COMF-C(3)
  • LFL*
  • DK(+)
  • HL(+)
  • ICE-C

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 Protector' was delivered to BSI on Monday 23 September 2013. Named in the Geiranger fjord, lady sponsor Torill Ytreberg, regional director at the Confederation of Norwegian Enterprise (NHO). After delivery, the vessel went off to work in the spot market in the North Sea.

This is the final of the first six vessels ordered by Blue Ship Invest. The latest vessels in the first series were adapted to requirements for work in the Norwegian sector. That includes more power in order to keep position in foul weather at rig, and NOx reduction for the exhaust emissions. In addition, the latest vessels carry the light ice class (ICE-C), to be prepared for work further north.

The first PSV in this series was delivered from Ulstein Verft in 2012. Blue Ship Invest, a wholly-owned company in Ulstein Group, decided at the time to invest in the construction of a series of newly developed medium-sized PSV designs in order to introduce them to the market. Market surveys had shown that the size and capacity would be very attractive for various assignments. All of the previously delivered vessels to Blue Ship Invest had entered into firm contracts in the North Sea.

2013: All six vessels were acquired by Nordic American Offshore (NAO) on 1 November 2013. All the vessels changed names, and 'Blue Protector' was renamed 'NAO Protector', IMO 9665126.

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.

Please contact us for more information

Ulstein Verft AS

P. O. Box 158
NO-6067 Ulsteinvik

Tel: +47 7000 8000