Sharknose is also the nickname of the Ferrari 156 F1

Sharknose is a term applied by railfan

Railfan

A railfan or rail buff , railway enthusiast or railway buff , or trainspotter , is a person interested in a recreational capacity in rail transport...

s to the styling of several cab unit

Cab unit

A cab unit and a carbody unit are body styles of locomotives in railroad terminology. While closely related, they are not exactly the same....

 diesel locomotives built by the Baldwin Locomotive Works

Baldwin Locomotive Works

The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...

 to the specifications of the Pennsylvania Railroad

Pennsylvania Railroad

The Pennsylvania Railroad was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy", the PRR was headquartered in Philadelphia, Pennsylvania....

. The styling was by the PRR's preferred designer, Raymond Loewy

Raymond Loewy

Raymond Loewy was an industrial designer, and the first to be featured on the cover of Time Magazine, on October 31, 1949. Born in France, he spent most of his professional career in the United States...

, with the distinctive nose reminiscent of his design for the PRR T1

PRR T1

The Pennsylvania Railroad's 52 T1 class duplex-drive 4-4-4-4 steam locomotives, introduced in 1942 and 1946 , were their last-built steam locomotives and their most controversial. They were ambitious, technologically sophisticated, powerful, fast, and uniquely streamlined by Raymond Loewy...

 steam locomotive. The locomotives in question are the:

• Baldwin DR-6-4-20, otherwise known as the "Passenger Sharknose" or "Passenger Shark"
• Baldwin DR-4-4-15
  Baldwin DR-4-4-15
  The Baldwin DR-4-4-15 was a cab unit-type diesel locomotive built for freight service by the Baldwin Locomotive Works between November 1947 and June 1950. It was produced in two different body types, nicknamed the "Babyface" and "Sharknose" styles by railfans, though Baldwin used the same model...
  
  , otherwise known as the "Freight Sharknose" or "Freight Shark", along with the:
• Baldwin RF-16
  Baldwin RF-16
  The Baldwin RF-16 is a cab unit-type diesel locomotive built for freight service by the Baldwin Locomotive Works between 1950 and 1953. All RF-16s were configured with a B-B wheel arrangement and ran on two AAR Type B two-axle road trucks, with all axles powered. A total of 109 cab-equipped A...
  
  

The freight models were also bought by other railroads, but the passenger units were unique to the Pennsy.
The New York Central, Baltimore and Ohio and Elgin, Joliet & Eastern were the other railroads which purchased "Sharknoses" from Baldwin. The New York Central was the last of these to operate the engines, selling the last of them to the Monogahela Railway for $6,000 each in late 1967. By 1972, all but two of them, the 1205 and 1216, had been scrapped.
The final pair also were sold for scrap in 1974, but were rescued from the torch by the Delaware and Hudson Railroad, which at the time was also operating the world's last four Alco PA-1 passenger locomotives.
The pair were purchased by Castolite Corp. in 1978, which leased them for use on the Michigan Northern. Both engines have purportedly been stored out of public view on the property of the Escanaba and Lake Superior Railroad for more than 20 years.

The name "sharknose" has also been given to streamlined automobiles of the 1930s and 1940s, because of their design, first introduced in 1936 on the 1937 Willys

Willys

Willys was the brand name used by Willys-Overland Motors, an American automobile company best known for its design and production of military Jeeps and civilian versions during the 20th century.-Early History:In 1908, John Willys bought the Overland Automotive Division of Standard Wheel Company...

 passenger cars. Willys continued to manufacture them in this design until the beginning of World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

. The term was applied to the 1938 Graham-Paige

Graham-Paige

Graham-Paige was an American automobile manufacturer founded by brothers Joseph B. Graham and Robert C. Graham , and Canadian Ray Austin in 1927. Automobile production ceased in 1940, and its automotive assets were acquired by Kaiser-Frazer in 1947...

 "Spirit of Motion." The design was also used on the 1941 Nash

Nash

-Places:*Nash, Buckinghamshire, England*Nash, Herefordshire, England*Nash, Bromley, London Borough*Nash, Newport, Wales*Nash, Telford and Wrekin, former village in Shropshire, England*Nash, South Shropshire, England*Nash Lee, Buckinghamshire, England...

, as well as 1940s Hudson models. The last automobile with this design was the 1947 Hudson.