The Steam Packet Company says two more sailings are at risk today, after it cancelled crossings earlier.
A yellow weather warning for high winds on Merseyside meant two sailings were called off this morning and afternoon.
The company says tonight’s 7.45pm Manxman trip from Douglas to Heysham and her 1.45am return trip could both be facing delays or cancellation.
A decision is due to be made by 5.30pm.