The Steam Packet Company says bad weather expected in the Irish Sea on Sunday evening may affect late sailings.
In particular, the Ben-my-Chree’s Douglas to Heysham voyage due to set off at 7.45pm may be disrupted.
The company says the Ben’s return trip which is due to leave Lancashire at 2.15am on Monday could also be affected.
No final decision will be made until around 5pm.
Murder accused had intellectual age of 'nine-year-old'
Jury hears suspect had borderline learning disability
MHKs explain their 'no vote' decision in chief minister election
Cannan and Moorhouse spoilt their papers
Farmers union declares no faith in DEFA leadership
MNFU cites 'a considerable lack of understanding' of challenges
Major incident declared as crews battled fire
12 taken to hospital overnight