Campbell died on Coniston Water in January 1967
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Gina Campbell was taking to the waters of Coniston for the first time since the death of her record-breaking father Donald Campbell in 1967.
She says she is breaking a vow never to go on to the lake to express opposition to a planned 10mph limit on Windermere.
The Lake District National Park is introducing the limit in an effort to make the site more "family friendly".
Speedboat owners were gathering on Saturday for what was likely to be the last organised protest at the move.
Gina Campbell said she would never drive a boat on Coniston again.
Boat rally
Surrey-born Donald Campbell was 45 when he attempted to beat his world record of almost 300mph on 4 January, 1967.
Gina Campbell has accused the Lake District National Park Authority of reneging on a pledge to retain Windermere as a safe haven for water sports enthusiasts.
She described the planned speed limit as "unfair and unjust".
She urged the authority to rethink its decision.
She was later due to open a boat rally at Bowness-on-Windermere.
National Park officials have ruled out any changes to the planned speed limit, which comes into force in 2005.