9K33 Osa

9K33 Osa
(NATO reporting name: SA-8 Gecko, SA-N-4 Gekko)
9K33 Osa ; (NATO reporting name: SA-8 Gecko, SA-N-4 Gekko)
	9A33BM3 transporter-launcher and radar vehicle of the upgraded 9K33M3 Osa-AKM
Type	6×6 amphibious SAM system
Place of origin	Soviet Union
Service history
In service	1971–present
Used by	See list of present and former operator
Wars	Iran–Iraq War; 1982 Lebanon War; Angolan Civil War; Western Sahara War; Persian Gulf War; 2008 Russia-Georgia war; 2011 Libyan civil war; Syrian Civil War; 2020 Armenian–Azerbaijani skirmishes; 2020 Nagorno-Karabakh conflict; 2022 Russian invasion of Ukraine;
Production history
Designer	NII-20 Research Institute
Designed	1960–1972
Manufacturer	Znamya Truda Plant
Produced	1970–1988
No. built	1,200
Variants	OSA-A, OSA-AK, OSA-AKM, OSA-M
Specifications (OSA-AKM)
Mass	17.5 tonnes
Length	9.14 m
Width	2.75 m
Height	4.20 m (radar mast stowed)
Crew	5 soldiers
Main; armament	6 9M33, 9M33M1, 9M33M2 or 9M33M3 missiles
Engine	D20K300 diesel
Ground clearance	400 mm
Operational; range	500 km
Maximum speed	80 km/h; 8 km/h (swimming)

The 9K33 Osa (Russian: 9К33 «Оса», literally "wasp"; NATO reporting name SA-8 Gecko) is a highly mobile, low-altitude, short-range tactical surface-to-air missile system developed in the Soviet Union in the 1960s and fielded in 1972. Its export version name is Romb.

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