Staffing issues have resulted in Wightlink running a revise Fishbourne to Portsmouth ferry service tomorrow (Wednesday).
The absence of an essential crew member has been named as the catalyst for the issue.
The cross-Solent operator says all affected customers have been contacted, says.
The exact sailings affected have yet to be confirmed.
A statement from the company said:
"Wightlink sincerely apologises for the inconvenience, but (we have been) unable to source short-notice cover so have taken this action as a last resort."