The Steam Packet says the technical issue which caused disruption with the Manxman earlier in the week has now been fixed.
It's after successful testing and sea trials of the ferry.
The company's confirmed the flagship vessel will be returning to normal service this morning.
Her first scheduled crossing is Douglas to Heysham at 9.15am, Saturday, June 13.
King's Baton Relay gets underway today
Cavendish given honour of opening Le Mans race
Cruise ship visiting today
Masterplan for Island's biggest park on display today
Charity wants your old bike leathers
Five Island residents honoured by King Charles
Local authority to ban feeding wild birds
Loose cock causes consternation in Port Erin