The Ben-my-Chree sailing from Heysham to Douglas in the early hours of tomorrow morning (Thursday) has been brought forward.
It'll now leave the Lancashire port at 1.45am.
The change has been made because of tidal conditions there.
Anyone travelling on it is asked to check in no later than 1.30am.
Teenager made 'knuckleduster' on way to fatal fight
Witness accused of lying to police following friend's death
Jenkins v Thomas in battle for the top job
MHKs will pick the new chief minister next Tuesday
Two candidates to compete for chief minister position
Chris Thomas and Kirrie Jenkins to stand for the top job
Tributes paid to Douglas' Smudge the Cat
The owners of the city's favourite feline has confirmed her death