A Steamship Authority ferry on the Nantucket route was sidelined for a few hours Monday after crew members found smoke coming from its bow thruster compartment.

Around 10: 30 a.m. Monday, crew members aboard the M/V Katama discovered the issue when the ferry was completing its trip to Hyannis, the authority wrote in a statement.

The smoke was determined to be coming from insulation around the vessel’s bow thrusters, forcing the authority to cancel the scheduled 10:45 a.m. round trip.

Hyannis firefighters met the ferry as it pulled into Hyannis harbor, but no fire fighting measures were required, the ferry line said.

There were no injuries.

The Katama, which typically serves as a truck transport on the Vineyard route, was back in service for its 4:15 p.m. sailing after a Coast Guard inspection.