Coast Guard rescue crews assisted the crew and passengers aboard the Provincetown IV Ferry, which was disabled near Scituate, Massachusetts, Wednesday.
Watchstanders at the Sector Boston Command Center received notification at 4:06 p.m. that the ferry had suffered an engine failure and was unable to make way.
A Station Point Allerton 47-foot motor lifeboat crew and the Coast Guard Cutter Flyingfish rushed to the scene to provide a safety zone and monitor, while another ferry arrived on scene to also assist.
The Provincetown IV crew eventually repaired the engine and were underway, while the Flyingfish and Station Point Allerton crews escorted them to port.
The ferry docked safely in Boston at about 7:40 p.m.
"We confirmed they were no injuries, ensured everyone aboard was safe, and made sure they made it back home," said Lt. j.g. Ed Costa the command duty officer at Sector Boston.
The incident is under investigation.