According to Official Guinness Records,
The fastest speed for a boat driven blindfolded is 150.6 km/h (93.58 mph), achieved by Mike Newman (UK) in Torbay, Devon, UK, on 1 November 2013.
Mike Newman was driving a Silverline motor boat.
For a complete list of 2013 records, please visit 2013 Guinness Records in United Kingdom.