There are two dockyard engines who work on a railway in New York City.
When Vinnie arrived back to America after The Great Railway Show, the dockyard engines shunted some trucks for him to pull to the Big City. However, Vinnie started bragging that he could pull more. Because of this, they then added on more trucks to the point that Vinnie could not pull the train.
The dockyard engines based on the H.K. Porter 0-6-0ST, built in Butler, Pennsylvania, north of Pittsburgh. These mainly worked in the dockyards on the east coast of the United States. The Brooklyn Eastern District Terminal Railroad, which served the dockyards in Brooklyn, New York, owned several examples of the dockyard engines' design, all of which were retired after the railroad started using diesel locomotives in 1963. One of these, B.E.D.T. 15, was rebuilt into an operating replica of Thomas by the Strasburg Railroad in 1998 for use during Day Out with Thomas events throughout the US. Porter appears to be directly based on B.E.D.T. 15 prior to its rebuild. Another engine, 14, is preserved at the Ulster & Delaware Railroad Historical Society in Arkville, New York.
Porter is also based on this locomotive.
The dockyard engines' livery is viridian with yellow stripes, lining and brass fittings. They have a gold star on each side of their lamp and red window frames.