The naming ceremony was held on board the Energy Empress beneath the Seven Sisters waterfall in the Geiranger fjord, a UNESCO world heritage site.
Ulstein Design & Solutions AS designed the platform supply vessels, which are based on the proven PX121 design. Thirty PX121 vessels have been built. These two vessels for Golden Energy Offshore boast an extra accommodation deck.
The Energy Empress and Energy Duchess were built at the Nantong Rainbow Offshore & Engineering Equipments Co., Ltd ("ROC") yard in China.
At the announcement of the design contract Per Ivar Fagervoll in Golden Energy Offshore said that:
"In addition to design, ULSTEIN also delivers a significant package including equipment, supervision, commissioning and testing, which has been instrumental and a condition for us to enter into this series of vessels. There is also other Norwegian equipment on-board including the accommodation interior package, delivered in accordance with Norwegian standards."