The Steam Packet has cancelled two of its sailings scheduled for Friday.
Winds of up to gale force 9 are forecast for tomorrow creating rough or very rough seas.
The cancelled sailings are the 2:30pm sailing from Heysham to Douglas and the 7:45pm sailing from the island to Lancashire.
The Friday 8am sailing to Heysham and Saturday 3am Heysham sailing to Douglas will go ahead as scheduled.
“If you have a registered account on our website then you can log on and amend your booking online, alternatively you can contact our reservations team on 01624 661661 or 08722 992 992 make alternative arrangements,” the Steam Packet said.