Mark I or Mark 1 often refers to the first version of a weapon or military vehicle, and is sometimes used in a similar fashion in civilian product development. In some instances, the
Arabic numeral
Arabic numerals are the ten numerical digits: , , , , , , , , and . They are the most commonly used symbols to write Decimal, decimal numbers. They are also used for writing numbers in other systems such as octal, and for writing identifiers ...
"1" is substituted for the
Roman numeral
Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are written with combinations of letters from the Latin alphabet, eac ...
"I". "Mark", meaning "model" or "variant", can itself be abbreviated "Mk." It may refer to:
Military and weaponry
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Mark I tank (1916), the first tank to be used in combat
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Supermarine Spitfire Mk I (1938), Royal Air Force fighter aircraft
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Mark I Fire Control Computer, United States Navy fire control computer used in World War II surface ships
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Mark I Nuclear Weapon (Little Boy), first nuclear weapon used in combat
*The
Mark I NAAK
In the United States military, the Mark I NAAK, or MARK I Kit, ("Nerve Agent Antidote Kit") is a dual-chamber autoinjector: Two anti-nerve agent drugs— atropine sulfate and pralidoxime chloride—each in injectable form, constitute the kit. T ...
, an auto-injector carried by military personnel for use in case of nerve agent attacks
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Mk 1 Underwater Defense Gun, 1970s United States Navy dart-shooting underwater firearm
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Mk 1 grenade
The Mk 1 grenade (sometimes spelled Mk I) is a fragmentation hand grenade used by American forces during World War I. According to its designers, it was to be the "simplest", yet most "fool-proof", grenade ever made. However, some major problems a ...
, the first American-designed grenade used by American forces in World War I
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Mark I trench knife, a combat knife carried by US forces after World War I
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Patrol Boat, River ("Mark I PBR", 1966), 31-foot version of the US Navy riverine patrol boat
Vehicles
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Mk I Mini
The Mark I Mini (1959–1967) was the first version of British Motor Corporation's Mini. It is characterised by its sliding windows, external door hinges and "moustache" grille. In the United Kingdom the Mark I was produced between 1959 an ...
(1959-1967); the original Austin Mini and Morris Mini-Minor from British Motor Corporation
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British Railways Mark 1
British Railways Mark 1 is the family designation for the first standardised designs of railway carriages built by British Railways (BR) from 1951 until 1974, now used only for charter services on the main lines or on preserved railways.
Follo ...
, the first standardised passenger-rated rolling stock (carriages or cars), introduced on British Railways in the 1950s
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UTDC ICTS Mark I, rolling stock used by Vancouver SkyTrain rapid transit
Other technologies
*MARK 1 or
Perceptron (1959-1960), a neural net computer designed by Frank Rosenblatt at Cornell University
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Mark I (detector), a particle detector at Stanford Linear Accelerator Center from 1973 to 1977
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Colossus Mark I (1944), a British computer used to crack military codes
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Ferranti Mark 1 (1951), an early computer based on the Manchester Mark 1
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GE BWR Mark I boiling water reactor, a Generation II nuclear reactor
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Harvard Mark I
The Harvard Mark I, or IBM Automatic Sequence Controlled Calculator (ASCC), was a general-purpose electromechanical computer used in the war effort during the last part of World War II.
One of the first programs to run on the Mark I was initi ...
(1944), an early automatic digital computer made by IBM
*The
Lovell Telescope, called the Mark I between 1961 and 1970, then the Mark IA between 1971 and 1987
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Manchester Mark 1 (1949), an early Autocode computer
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Mesa Boogie Mark I (1969), an electric guitar amplifier designed in Northern California
Other uses
* "Mark I," or "Mark 1," was the working title of "
Tomorrow Never Knows," a song written by
John Lennon
John Winston Ono Lennon (born John Winston Lennon; 9 October 19408 December 1980) was an English singer, songwriter, musician and peace activist who achieved worldwide fame as founder, co-songwriter, co-lead vocalist and rhythm guitarist of ...
for
The Beatles
The Beatles were an English Rock music, rock band, formed in Liverpool in 1960, that comprised John Lennon, Paul McCartney, George Harrison and Ringo Starr. They are regarded as the Cultural impact of the Beatles, most influential band of al ...
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Mark 1 or Mark I, the first chapter of the Gospel of Mark in the New Testament of the Christian Bible
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Visual inspection, sometimes been called Mark I Eyeball in the US Military since the 1950s
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Patriarch Mark I, retronym for Mark the Apostle as Patriarch of Alexandria
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Iron Man's armor
See also
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Mark One (disambiguation)
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