Vessel had been using just three after a control system fault
The Steam Packet Company has confirmed the Manannan is now running on all four engines.
The fastcraft had been using just three of its engines after a problem was detected with the control system in one engine over the weekend.
It meant passengers had been facing longer than usual crossing times over the last few days.
The vessel is now expected to run to schedule on its two round trips to Liverpool today.
Amber weather warning issued as strong winds and coastal conditions expected overnight
Ferry sailings cancelled as gusts of up to 80mph forecast, with risk of coastal overtopping in exposed areas
Hospice funding criticised by UK charity chief amid Isle of Man service cuts
Comments come as Hospice Isle of Man confirms redundancies and financial pressures
Sailings cancelled as storm brings gale-force winds
Yellow warning issued with gusts up to 80mph expected in exposed areas
Manx Mountain Marathon route diverted over safety concerns amid forecast strong winds
Organisers alter coastal section of course ahead of Saturday’s races as conditions expected to worsen
Rushen MHKs to meet with Southern Group Practice over appointment concerns
Patients report difficulties when booking to see a GP
