The Hillards Charitable Trust was set up to help people in areas where there was formerly a Hillards supermarket.
In the 1970s and 80s, the family firm had numerous branches across Yorkshire, including an outlet in Edenthorpe, now owned by Tesco.
The latest inshore lifeboat, John Wesley Hillard IV, was handed over to Scarborough RNLI by Oscar Hartley, a trustee of the Gay and Peter Hartley Hillards Charitable Trust, the fourth lifeboat donated by the Trust in the last 30 years.
The trust makes grants for social welfare causes, particularly for the benefit of people in areas where there was formerly a Hillards supermarket.
The company was founded by John Wesley Hillard in 1885 in Cleckheaton with the Doncaster branch opening in 1983 before an 1987 £220m Tesco buy out.