If I correctly understand this, the Yellow Pages speed record has finally been broken. The new record is 48.7 knots. Here are details and a link.
RECORD: The Outright World Sailing Speed Record
Equipment: Windsurfer F2/Naish
Sailed by: Finian Maynard (BVI) at St Maries de la Mer. France.
Dates: 10th April 2005
Elapsed Time: 20 seconds over 501 meters
Speed: 48.7 kts