The ferry was used as principal camera and in the scene where Chief Brody is chastised by the Mayor of Amity to keep the beach open for the 4th of July.
"Martin, it's all psychological. You yell barracuda, everybody says, "Huh? What?" You yell shark, we've got a panic on our hands on the Fourth of July."
That's what he said before more people became shark food.
In reality the Chappaquiddick Ferry on Martha's Vineyard was owned and skippered by a blind man for 37 years. In its long time on the water it has been splintered by a hurricane, burned by fire and hit by a seaplane. The Chappy Ferry connects two islands that are 527 feet apart from each other and allows tourists and locals to explore Chappy Island which has a population of 179.
Chappaquiddick Island is a small peninsula and occasional island and hosts beaches, cycling routes, natures tours and more.