Tomorrow's crossings could also be affected
Both of today's sailings to and from Heysham have been cancelled.
The decision has been made due to adverse weather conditions.
The Steam Packet Company is also warning tomorrow's Manannan crossings are both subject to possible disruption or cancellation.
A decision will be made on whether the sailings will go ahead by 8am tomorrow.


Amendments to Assisted Dying Bill approved by Tynwald
Indoor play business makes 'very difficult decision' to close
No routine GP appointments Wednesday afternoon
Last chance to submit nominations for local authority by-elections
Rapid review into hospital provides 'clear direction' but there is 'no single solution', says minister