Image of boat and gold text on green shamrock surrounded by gold text on white background.
The Notre Dame team competed in the APBA league that raced hydroplane boats. Each hydroplane name is marked by a letter followed by a number. The U-7 was the successor hull for the G-5 hydroplane. The U-7 debuted in 1962 under pilot Warner Gardner. This hull would be the last one used by the Notre Dame team, appearing in twelve races. Its last race was in 1973 and, shortly after, the whole team itself was disbanded once their owner retired.
Hydroplane History. (n.d.). Boats by hull number. https://hydroplanehistory.com/boats/boats_hull_number_table.html