Manxman sailings are switching from Liverpool to Heysham this weekend.
The Steam Packet company says ongoing work at the government's new terminal at the Princes Half-Tide Dock means sailings to Merseyside on Saturday and Sunday will be diverted.
It's the third weekend crossings have been affected.
Coaches will be provided to take passengers between Lancashire and Merseyside.
How long do mental health patients stay in Manannan Court?
Could you take over this former restaurant?
Framework of new Sea Services Agreement ready, says minister
Attorney General says he's stepping down
Road closures in two towns for running event this week
Six weekend ferry crossings could face disruption
President of Tynwald announces retirement
Police close Mountain road