T. B. McClintic, also known as the Atlantic IV, is a historic quarantine boarding tug located at St. Andrews, New Brunswick, Canada.

She was built in 1932 by the Bath Iron Works for the U.S. Public Health Service.

The vessel is 60 feet 10 inches (18.54 m) in length overall with a 16.5-foot (5.0 m) breadth and a 9.2-foot (2.8 m) draft.

In 1961, the City of Wilmington, North Carolina acquired the ship for use as a fireboat and renamed her the Atlantic IV.

This article about a property in Brunswick County, North Carolina on the National Register of Historic Places is a stub.