Originally, the Protocol limited teams to three test boats, but that restriction was removed later. BAR is the only team to have built four test boats.
- T1 – modified AC45 platform, launched in October 2014, useful when training for AC World Series
- T2 – Launched in December 2015, now a museum piece in the “Tech Deck.” Capsized soon after launch with serious damage to the wing. Designed when the AC62 Rule was in place, the boat had struts and cables rather than a central “pod”.
- T3 – layout very similar to the 49 foot long “AC Class” yachts that will race in 2017, launched in April 2016.
- T4 – very similar (identical?) to T3, launched in late May 2016 with no public announcement.
To my knowledge T3 and T4 have not sailed together.
Ben Ainslie shows Duchess of Cambridge “T2” in the Tech Deck museum.