Two spectacular blow-overs at Stewartby Lake on Saturday produced dramatic photographs but, crucially, no injuries as both drivers walked away unscathed from their high-speed incidents.
Mantripp’s Inverted Flight
Racer and commentator Jason Mantripp provided the first eye-catching moment when his hydro launched into a complete barrel-roll, captured in a sensational photograph by Fred Emeny. The image shows Mantripp’s craft fully inverted mid-air with the driver remaining in the cockpit throughout the incident.
Mantripp emerged from the blow-over without injury.
Sallis Thrown Clear
Alfie Sallis became the second driver to suffer a blow-over at the Bedfordshire venue. Photographer Lee Prewer captured the dramatic moment as Sallis was ejected from the cockpit whilst his boat pitched skyward.
Despite being thrown clear of his craft, Sallis walked away from the incident unharmed.
John Moore’s involvement in powerboat racing began in 1981 when he competed in his first offshore powerboat race. After a career as a Financial Futures broker in the City of London, specialising in UK interest rate markets, he became actively involved in event organisation and powerboat racing journalism.
He served as Event Director for the Cowes–Torquay–Cowes races between 2010 and 2013. In 2016, he launched Powerboat Racing World, a digital platform providing global powerboat racing news and insights. The following year, he co-founded UKOPRA, helping to rejuvenate offshore racing in the United Kingdom. He sold Powerboat Racing World in late 2021 and remained actively involved with UKOPRA until 2025.
In 2025, he established Powerboat News, returning to independent journalism with a focus on neutral and comprehensive coverage of the sport.
