Did Tom Slingsby and the Australian SailGP team break the 50 knot barrier?

Ahead of San Francisco SailGP, when the Australian team was on the water, they reached 52 knots (Almost 60 MPH) according to a handheld GPS. Yet there seems to be some debate whether Tom Slingsby and the Australian SailGP team hit the 50 knot barrier. 48 knots or 52 knots? In any case, great sailing! Thank you SailGP for coming to San Francisco.