The Steam Packet Company says it's making changes to its autumn sailing schedule to allow for works at the Liverpool ferry terminal.
It says the 'upgrade' is needed to fix issues with berthing the Manxman which caused disruption to last year's winter sailings.
To minimise disruption, the SPC says it will aim to keep sailings as close to the original schedule as possible.
However, crossings to and from Merseyside on Saturday, November 1 and Sunday, November 2 will instead operate to Heysham.
The company's arranging a coach transfers from the Lancashire port to Liverpool for any passengers who need it that weekend.
How are Islanders supported while waiting for benefits?
Specialist vans to survey Isle of Man roads next month
Great Laxey Wheel upgrades to see old ticket office removed
MHK to question plans for improving Island's mental health services
Colby Glen path shut until next April
If you Trick Or Treat, don't trouble the street!
German newspaper says hello from the Island - and Queen Victoria
Don't buy electric cars, says Manx salvage firm