Two sailings are at risk of disruption on Tuesday with strong winds set to hit across the Irish Sea.
A moderate to rough sea is expected by the Met Office, with gusts of up to 45mph expected.
Manxman is due to sail to Heysham at 8am, returning at 1:45pm.
However, the company says it will make a final decision by 5:30am on whether those sailings will go ahead.
Passengers may amend their bookings free of charge through their online account, or alternatively you can contact the reservations team on 01624 661 661 or 08722 992 992.