The Steam Packet company says this afternoon's Manannan sailing to Liverpool will set off around two hours late.
This morning, the company said her crossing from Heysham would arrive late in the Island.
The 4pm trip is now due to set off from the Island at 6pm.
On its website, the ferry firm says check-in for the crossing will open at 3.30pm.
Warning over parking suspensions for King's visit
Peel residents outraged over toxic powder spread near young gull
Commissioners tackle beach rubbish after online criticism
This year's bookings will be honoured, says closing venue
Noel tackles charity car wash for Autism Initiatives
TT legend's bike could fetch up to £55k at auction
Southern road temporarily closed this week
Number registered with GPs has risen by 1.7 percent