The ferry that runs between between Portland and Yarmouth, Nova Scotia, was canceled Monday, July 31, and Tuesday, Aug. 1, because of technical problems.

Bay Ferries made the announcement on its website Monday that 3 p.m. departure trip from Portland to Yarmouth, and the trip back to Portland, which was scheduled to leave at 8:30 a.m. Tuesday morning, would not run.

Instead, The Cat will instead run Tuesday between Saint John, New Brunswick and Digby, Nova Scotia.

The ferry service did not explain the technical difficulties but urged passengers to call and re-book their trips.

In a statement released Tuesday afternoon, the ferry operator said a technical crew from Bay Ferries and the manufacturer of The Cat’s engine is in Portland working to resolve the issues.

“They are undertaking a thorough assessment of the engine issue identified July 31, with a goal of implementing a fast and effective repair program, so that The Cat can continue to provide the Maine-Nova Scotia high-speed ferry service to our customers,” the statement read, in part.

This is the second time in a month that the ferry has been sidelined by technical problems with its engine. The Portland Press Herald reported on July 1 that a previous technical issue slowed the ferry and caused the cancellation of at least one trip at that time.

The Cat is expected to resume its service from Portland at 3 p.m. Thursday, Aug. 3.