This in from Wightlink, in their own words. Ed
Please be advised that owing to technical reasons the Portsmouth Harbour to Ryde Pier Head Catamaran service is operating a revised service until further notice.
Sailings will depart from Portsmouth Harbour at 15 minutes past the hour and from Ryde Pier Head at 47 minutes past the hour.
Wightlink would like to apologise for any inconvenience that this may cause.
Passengers concerned about their sailing(s) should call Wightlink reservations on 023 9282 7761.