INEOS Britannia partnered with the Mercedes-AMG PETRONAS F1 Team's Applied Science division to bring together some of the best talent from the high-performance marine and automotive industries for its America's Cup Campaign.
It was the first time the race boat had been in public view after two-and-a-half years of design, build and fit-out.
Up until this point, RB3 had been shrouded in secrecy and was kept under wraps for its 1,000-mile journey from its UK base in Northamptonshire to Barcelona earlier this month. Preparations are now under way for RB3's first sailing day, as well as its official naming ceremony.
INEOS Britannia Team Principal and Skipper Sir Ben Ainslie said: "This is a big day for the team. We have been keeping RB3 under wraps for such a long time that it's almost surreal to see her out of the shed and in public view here in Barcelona.
"Thousands of hours of work have gone into this boat and so it's great to finally reveal her to the world. Things are really stepping up in the campaign now, and we are looking forward to launching RB3 and getting out on the water very soon."