VOS Pace

A platform supply vessel of the PX121 design with 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 the owner and operator.

Vessel type

Platform supply



Built by

COSCO (Guangdong) Shipyard Co. Ltd., China



Owned by

Vroon Offshore Services

Designed by

Ulstein Design & Solutions AS

Ordered by

Vroon Offshore Services

IMO Number


Principal dimensions

83.4 m
18 m
Dead weight:
4200 tonnes
Speed (max):
15 kn
23 POB
Deck area:
830 sqm

Note: Subject to selected variant configuration


Ship history

In March 2013, the Dutch ship owner Vroon Offshore Services contracted two ULSTEIN 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, a further two 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 their adaptable tank capacities, the PX121 vessels have been meticulously engineered to bolster drilling activities involving extended and deeper boreholes and operations conducted at greater distances from the shoreline. Alongside dedicated tanks for oil, water, and drilling fluids, these vessels are equipped with dual stainless steel tanks designed to securely accommodate flammable liquids or corrosive chemicals. Noteworthy features include incorporating a state-of-the-art Dynamic Positioning System Class II on each ship, in adherence to the stringent criteria of 'Clean Design' stipulated by the ABS classification standards.

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 in turn 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

2023: Golden Energy Offshore Services AS has entered into an agreement on acquiring four of these vessels, the VOS Pace, VOS Partner, VOS Passion and VOS Paradise, an acquisition that will be completed by September 2023.

Please contact us for more information