Super Sportivo 100 GTO By ISA The smallest bullet shot by the ISA Sportivo gun has been sold. The Super Sportivo 100 GTO will go to a European owner when it is completed. You will find the 141 Super Sportivo and the 121 Super Sportivo in this new series. The yacht is perhaps in the headlines more for the proposed top speed of 50-knots on a 100-foot yacht. That in itself is a feat to achieve but the owner is a is clearly not phased by the potential fuel bill.