Energy Partner

In March 2013, the Dutch shipowner Vroon Offshore Services contracted two PX121-designed platform supply vessels for construction at the Chinese COSCO Guangdong Shipyard. Two options were declared in October, pushing the total number of sold designs from Ulstein past 100. Vessel number 100 is the VOS Partner. In July 2014, two more options were declared.

Ulstein signed an agreement with COSCO to deliver ship design, power and control equipment, and on-site follow-up services for all six vessels.

The PX121 design was becoming increasingly attractive to oil companies as it offered 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.

Each of Vroon’s six PSVs was intended for operation in European waters. They measure 83.4 metres in length and have an 18-metre beam. They boast a rectangular cargo deck of 830 square metres and a load capacity of 4,200 tonnes (dwt).

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. According to the ABS class, each ship has a dynamic positioning system, Class II, and meets the ‘Clean design’ requirements.

The PX121, which has a maximum speed of approximately 15 knots and modern accommodation for 23 people, also comes with the iconic ULSTEIN X-BOW®. 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 motion and propulsion efficiency in moderate and heavy seas. Its innovative shape eliminates wave slamming and bow impact, delivering better performance, reducing noise and vibration, and enhancing crew comfort and safety.

Overview vessels: 

• VOS Pace - delivered on 6 February 2015 - IMO number 9685750  new name: Energy Pace
• VOS Paradise - delivered on 4 August 2015 - IMO number 9685762 new name: Energy Paradise
• VOS Partner - delivered on 14 January 2016 - IMO number 9709128 new name: Energy Partner
• VOS Passion - delivered 23 August 2016 - IMO number 9709130 new name: Energy Passion
• VOS Patience - delivered 18 July 2017 - IMO number 9742089
• VOS Patriot - delivered on 22 March 2018 - IMO number 9742091

Operational work:

29 November 2017: Vroon announced that VOS Patience and VOS Partner had recently started a charter for the oilfield services company TechnipFMC. The two PSVs were delivered in Malta and would support TechnipFMC, supplying pipelines and subsea materials to TechnipFMC 's construction assets offshore in the Mediterranean. Both units will operate in the Mediterranean for two non-consecutive phases in 2017 and 2018. Both vessels are under commercial and operational management by VOS Genoa.

2023: Golden Energy Offshore Services AS acquired four of these vessels, the VOS Pace, VOS Partner, VOS Passion, and VOS Paradise. All have changed prefixes to Energy.