Happy Sky, with her combination of outstanding lifting capacity and outreach, was the perfect vessel to move the 28.7*88,2*56,5 m (lwh) Grab-unloader. The loading operation was unique, as the unloader would be delivered to the vessel with its boom in working position, in stead of upright or even separate.
This meant that Happy Sky would not be able to moor at the terminal once the grab-unloader stood waiting for loading on the quayside, as the boom protruding over the water would block the mooring of the vessel.