Mark XVIII explained
Mark XVIII or Mark 18 often refers to the 18th version of a product, frequently military hardware. "Mark", meaning "model" or "variant", can be abbreviated "Mk."
Mark XVIII or Mark 18 may refer to:
Technology
- De Havilland Mosquito NF Mk XVIII
- a Royal Air Force night fighter radar modification
- De Havilland Mosquito FB Mk XVIII, also called Tsetse; RAF ground-attack aircraft carrying a QF 6-pounder (57 mm) anti-tank gun
- Supermarine Spitfire Mk 18
- a further development of the Mk XIV, arriving too late to serve in World War II
- 1953 American nuclear bomb
- former US Navy grenade launcher
Other uses