This in from Wightlink, in their own words. Ed
Please be advised that owing to crew shortages the following sailings have been cancelled today (Monday 23 January):
From Portsmouth Harbour: 1740 & 1845
From Ryde Pier Head: 1815 & 1915
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.