From Wikipedia, the free encyclopedia
Mark IV or Mark 4 often refers to the fourth version of a product, frequently military hardware. "Mark", meaning "model" or "variant", can be abbreviated "Mk."
Mark IV or Mark 4 can specifically refer to:
In military and weaponry
- Webley Mk IV, also known as the "Boer War Model"; .455 caliber British revolver from 1899
- Mark IV tank, an up-armoured variant of the British Mark I tank, 1917.
- Vickers Tank Periscope MK.IV (1936); widely used periscope designed in Poland
- Bristol Blenheim Mk.IV; light bomber in Royal Air Force service before and during World War II, the most numerous Blenheim variant
- Mark 4 nuclear bomb (1949–1953); an American nuclear bomb
- Mk IV Turtle helmet (1950s–1980s); British Army standard helmet; a slight design change from the Mk III Turtle helmet
- Merkava Mark IV (1999); main battle tank of Israel Defense Forces
- Navy Mark IV (late 1950s–early 1960s); a full pressure suit designed for unpressurized military jets; modified by NASA for Project Mercury astronauts
- Chandelle Mk IV, ultralight aircraft
- Jaguar Mark IV (1945–1949), a British saloon car
- Triumph Spitfire MKIV (1970–1974), a British sports car
- Lincoln Continental Mark IV (1972–1976), an American personal luxury car
- British Rail Mark 4 coaching stock
- Mark 4 (Iarnród Éireann) Irish Rail InterCity train
- Mark IV monorail, a design of monorail train used at the Walt Disney World Resort between 1971 and 1989
- Cozy MK IV, an experimental 4 place canard aircraft derived by Nat Puffer from the Burt Rutan Long-EZ
- Canon EOS-1D Mark IV, a digital SLR
- Harvard Mark IV (1952), an all-electronic stored-program computer
- MARK-IV (Software), a 1960s-era 4th-generation programming language from Informatics
- Mesa Boogie Mark IV (1993–2008); an electric guitar amplifier designed in Northern California
- Disklavier#Mark IV, a reproducing piano sold by Yamaha Corporation
- Mark 4 or Mark IV, the fourth chapter of the Gospel of Mark in the New Testament of the Christian Bible
- The Mark Four (1966–1968); an English band
- MARK IV (Barbershop); a barbershop quartet that won the 1969 SPEBSQSA competition
- Emergency Medical Hologram Mark IV, in Star Trek: Voyager, an artificially intelligent medical assistance program
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