"Blue Sky" I believe was the last F45 model to be delivered and she looks quite different to the others because of a specific requirement from the owner...a helipad. The extension needed to provide the helipad on the aft upper deck changes her appearance enough to make her stand-out from her sisterships. The aft deck overhangs protrude significantly giving Blue Sky a less-than-perfect profile. She is now up for sale. The interior is pretty cool though showing design by Bannenberg & Rowell.