The Ben-my-Chree will be going into dry dock for servicing next month.
The boat will be out of action for three weeks from April 12th and will return to service on May 4th.
The scheduled maintenance work will include a technical overhaul as well as refurbishing some of the passenger areas including improvements to the seating and lounge areas.
The MV Arrow will take over freight services and Manannan will do the passenger services as scheduled.
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
Fuel firm says "fingers crossed" for calmer energy costs
Ring doorbells will need data protection registration - but shouldn't cost you money