Technical issues were reported on 9 May
The Isle of Man Steam Packet Company says repairs to one of the Manannan's engines is complete and is now operating to schedule.
Just over a week ago, technical issues arose with the inner main engine on the starboard side.
Trips to and from Liverpool were subsequently extended as a result.
The company has thanked passengers for their patience.
Tynwald mandated gas tariffs suspended by court
A later court date has provisionally been set for October
'Not viable' to pause visa applications says treasury minister
4,362 entry clearance visas were issued since September 2021
Hillside fire shuts King Edward Road
Fire crews responding to incident near Howstrake
SPC: 'Manxman is trying to cover a lot of bases'
Treasury says now is not time to 'attribute blame'