Matting is to be fitted to the slipway and a 'shoe' will be fitted next week to the end of the ramp in an attempt to reduce noise and vibration levels.
Residents are unhappy about the work taking place at the start of the school year, but Island Roads say it must be completed by October to comply with MMO licence.
In a recent campaign by the Police over seven days, a total of 2,007 people in Hampshire and the Isle of Wight were caught speeding. The vast majority were men and over the age of 25.