A Provincetown ferry was temporarily disabled and suffered damage when it was struck by a 20-foot wave off Scituate, according to the U.S. Coast Guard and Bay State Cruises, has been escorted into Boston Harbor under its own steam.

The ferry was able to get its starboard engine going after being disabled for about 20 minutes. The Coast Guard sent the cutter Flying Fish and a 47-footer to accompany them back in, Coast Guard spokeswoman Myeonghi Clegg said.