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 "1" is substituted for the Roman numeral "I". "Mark", meaning "model" or "variant", can itself be abbreviated "Mk." It may refer to:

Military and weaponry

Vehicles

  • Mk I Mini (1959-1967); the original Austin Mini and Morris Mini-Minor from British Motor Corporation
  • British Railways Mark 1, the first standardised passenger-rated rolling stock (carriages or cars), introduced on British Railways in the 1950s
  • 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
  • Mark I (detector), a particle detector at Stanford Linear Accelerator Center from 1973 to 1977
  • Colossus Mark I (1944), a British computer used to crack military codes
  • Ferranti Mark 1 (1951), an early computer based on the Manchester Mark 1
  • GE BWR Mark I boiling water reactor, a Generation II nuclear reactor
  • Harvard Mark I (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
  • Manchester Mark 1 (1949), an early Autocode computer
  • Mesa Boogie Mark I (1969), an electric guitar amplifier designed in Northern California

Other uses

See also

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