According to Official Guinness Records,
The fastest 100 m waterski tow by rowing boat is 16.87 sec and was achieved by Charlotte Wharton & Imperial College Boat Club (both UK), on the set of ‘Officially Amazing’ at Hazelwood Ski World, in Lincoln, UK, on 21 August 2013.
For a complete list of 2013 records, please visit 2013 Guinness Records in United Kingdom.