Search parties in Maine are using sonar in the hopes of finding a pair of boat-building students who vanished last week off the shores of Kennebunkport.

Officials for the Maine Marine Patrol, along with the local and state police, said Wednesday they dispatched divers equipped with side scan sonar to search for Zachary Wells, 21, of Burlington, Vt., and Prescott Wright, 23, of Barnstable, Mass., in the waters off Cape Porpoise, a small village located within the town of Kennebunkport. The Maine Marine Patrol also used two boats and an airplane in the search.

Both men are students at The Landing School, in Arundel, Me., where they were studying yacht design and construction. They were last seen last Wednesday night drinking with friends at Wells’ home. When one of Wells' roommates went downstairs to turn off a radio at 4 a.m., both men were gone.