The yacht "The Stroke Association", launched last week near Southampton, is owned by Doug Hassell, who has supported the charity since one of his crew had a stroke in 1997.
As well as generating publicity during regattas, such as Cowes Week, by running pleasure trips on the craft, Hassell will also be racing it in the 600-mile Cowes-Plymouth Rolex Fastnet Race, starting on 7 August.
The Stroke Association deputy director of comms Gregg Vines said the vessel would help the charity raise its profile and attract more volunteers.
"The Stroke Association boat and the crew behind it offer us the opportunity to reach new audiences such as business and boating groups and to encourage them to support our work," said Vines.
"It also means we can target the south coast media in highlighting strokes and services we can provide," he added.
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