The Department of Infrastructure says contractors need more time to carry out work at the Liverpool ferry terminal.
It says work to adjust the fenders at the terminal has been extended, which will impact more sailings.
The weekend crossings on Saturday, November 8 and Sunday, November 9 will be now be affected, along with those on Saturday, November 1 and Sunday November 2, which had already been impacted.
The department says once the work is complete, the Manxman will be able to dock at the berth no matter the state of the tide.
Coast road restrictions for weekend charity walk
UK refuses to forward assisted dying bill for Royal Assent
External investigation opened into Peel Commissioners staff member
Bus strike's end is bittersweet for some, says union leader
MHK says to contact him over car tax issues
Hospital bed capacity to be discussed in Tynwald
Weather warning for coastal overtopping later
Heysham ferry to run with delay this morning
