Blue Guardian

New name: NAO Guardian. 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 AS

Principal dimensions

83.4 m
18 m
Dead weight:
4128,8 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
Cement (4 tanks):
254 cbm
LFL* (4 tanks):
153 cbm
Base oil:
259 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

Featured solutions

Ship history

Vessel's name today is 'NAO Guardian', but the vessel was originally named 'Blue Guardian'. Delivered on Friday 28 June 2013. The ship started work in the spot market, and two weeks after delivery, the vessel entered into a 4-month contract with Statoil, with 4 monthly options. The contract involved being a support vessel for the jack-up rig Maersk Giant in its work on two subsea wells, owned by Det Norske Oljeselskap ASA and Repsol Exploration respectively, on the Norwegian continental shelf in the North Sea.

The Ulstein investment company Blue Ship Invest contracted six vessels of this design, and all six were acquired by Nordic American Offshore (NAO) on 1 November 2013. All vessel changed names, by replacing the prefix ‘Blue’ with ‘NAO’. 

The latest vessels in the series have been 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, they carry the light ice class (ICE-C), to be prepared for work further north.

January 2016: NAO Guardian competed mission in time, due to the X-BOW. Watch video

IMO 9665114

Please contact us for more information

Ulstein Verft AS

P. O. Box 158
NO-6067 Ulsteinvik

Tel: +47 7000 8000