With its features, Happy Star offers unique lifting capabilities for the heavy lift and project cargo market up to 2,200 in tandem lift. Her lifting curve ranges from e.g. 2,200 at 21 metres, 1,800 mt at 25 metres, 1,600 mt at 28 metres to 1,000 mt at 41 metres, with a lifting height of nearly 47 metres above the main deck.
With the weather deck extending over the full width of the vessel, her load space can used to the utmost. The weather deck hatch covers are pontoon type and bear 15 t/m2. The tweendeck is adjustable in height and Happy Star can sail with open weather deck hatches on a draught of up to 8 metres. The vessel has Finnish/Swedish 1A Ice Class notation.
The unique capabilities of the Happy Star were recognized in the market and therefore an identical copy of the vessel is under construction. In 2019 the new build vessel Happy Sun is expected to be delivered.