As the Steamship Authority readies to welcome its newest ferry to the fleet, another was sold off this week to a Cape-based construction company. 

The boat line announced Monday that Robert B. Our, a Harwich company that has done extensive construction on the Cape and Islands, purchased the Gay Head freight ferry, ending the vessel’s 35 years of service to the Steamship Authority. 

In total, the freight ferry made more than 55,000 trips and traveled more than 1.2 million in service both to the Vineyard and Nantucket. 

The M/V Barnstable is be on display in Hyannis Monday.

The sale price was $200,000. 

Robert B. Our has worked on numerous projects on the Vineyard, as well as for the Steamship Authority. The company specializes in septic work, marine construction and demolition. A representative with the company did not return a request for comment Wednesday. 

As the Steamship Authority bids the Gay Head farewell, a new freight ferry is set to make its first sail next week. 

The M/V Barnstable, a former offshore oil vessel that was converted into a freight ferry this year, will be unveiled to the public at the Steamship’s Hyannis terminal on Monday. The boat line is offering public tours of the boat from 11 a.m. until noon, before it departs to Nantucket. 

The ferry is the first of three new freight ferries, all which are being retrofitted after years of service in the Gulf of Mexico. The M/V Barnstable will largely ply the Nantucket route. 

The M/V Aquinnah and M/V Monomoy, the other two new ferries, are currently under construction in an Alabama shipyard. 

The M/V Barnstable is 245 feet long, and expected to have greater maneuverability than the past open-air freight boats. The ferry can carry about 50 automobiles. 

The Steamship Authority is also selling the Katama ferry, which started for the boat line in 1988, to Maurice Denis of Miami, Fla.