Western Maryland J-1 Class

what is it?

The Western Maryland J-1 class, also known as the Potomac, was a class of twelve 4-8-4 "Potomac" (Northern) type steam locomotives built by the Baldwin Locomotive Works in 1947. They were operated by the Western Maryland Railway (WM) in revenue service until the mid-1950s. Like most railroads, the WM did not choose the more common name "Northern", going with the name "Potomac" for their 4-8-4s instead.

who runs it

base stats

• power 3.5 MWpower output
• weight 230 tin working order
• built 12made in total

Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.

fun facts

• 🎂First built 79 years ago, in 1947.
• 🚗3.5 MW is about 41 family cars (~85 kW each) flat out.
• 🐘Weighs about as much as 38 African elephants (~6 t each).
• ⌛Served for 7 years (1947–1954).

steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.

spec sheet

built

1947

in service from

1947

retired

1954

status

preserved

number built

12

kind

Steam

traction

steam

origin

🇺🇸 United States

builders

Baldwin Locomotive Works

operators

Western Maryland Railway

top speed

—

power

3.5 MW

gauge

1,435 mm standard gauge

wheel arrangement

4-8-4

weight

230 t

nicknames

Potomac

From the Wikipedia infobox and Wikidata. Blank means the sources don't say.