Naming of the platform supply vessel VOS Passion on 18 July 2016 by Mrs Mireille Vroon.

Energy Passion

Energy Passion (first name: Vos Passion), is a platform supply vessel of the PX121 design, which has a competitive combination of fuel efficiency and cargo capacities/deadweight. This translates to a performance level usually expected from larger PSVs, but at a medium-sized PSV cost - delivering excellent value for money for the owner and operator.

Owned By
Vroon Offshore Services
Built By
Partner yard
IMO Number

Primary Specifications

83.4 m
18 m
Dead weight
4200 tonnes
Draught (max)
6.7 m
Speed (max)
15 kn
26 POB
Deck area
830 sqm

Additional Data

Fresh water
Drill water/W.B.
Fuel capacity
Liquid mud/Brine
Note: Specifications may have changed since the original completion date.

Ship history

In March 2013, the Dutch ship owner Vroon Offshore Services contracted two PX121-designed platform supply vessels for construction at the Chinese COSCO Guangdong Shipyard. October saw the declaration of two options, pushing the total number of sold designs from Ulstein past the #100 mark. In July 2014, two further options were declared. The vessels were delivered during 2015 - 2017.

ULSTEIN delivered ship design, power & control equipment and on-site follow-up services for all six vessels.

Thanks to flexible tank capacities, the PX121 is set up to support drilling activities with longer and deeper boreholes and activities further from shore. In addition to tanks for oil, water and drilling fluids, the vessel also has two stainless steel tanks for flammable liquids or corrosive chemicals. Each ship will be equipped with a dynamic positioning system Class II and meet the requirements of 'Clean Design', according to ABS class.

The X-BOW offers efficiency over a wide draught range, which is important for PSVs as they often operate with varying loads. Furthermore, the X-BOW has unique, advantageous qualities in terms of motion and propulsion efficiency in moderate and heavy seas. Its innovative shape eliminates wave slamming and bow impact, delivering better performance while reducing noise and vibration, which translates to enhanced crew comfort and safety levels.

Overview vessels:

  • VOS Pace - delivered on 6 February 2015 - IMO number 9685750
  • VOS Paradise - delivered on 4 August 2015 - IMO number 9685762
  • VOS Partner - delivered on 14 January 2016 - IMO number 9709128
  • VOS Passion - delivered 23 August 2016 - IMO number 9709130
  • VOS Patience - delivery July 2017 - IMO number 9742089
  • VOS Patriot - delivered on 22 March 2018 - IMO number 9742091

Vos Passion was sold to Golden Energy Offshore, and its name was changed to Energy Passion.

VOS Passion near Vlissingen 31 March 2017
VOS Passion near Vlissingen, the Netherlands, on 31 March 2017. Photo: Lucien van der Horn.