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T-55 Marksman


ItPsv 90


Overview


T-55 Marksman

Rear view of T-55 Marksman self-propelled anti-aircraft gun.
Source: Finnish army - © Copyright lies with original owner

Origin
Finland
Type
Self-propelled anti-aircraft gun
Service life
1991 - 2010
Status
Out of service
Development
1983 - 1985 (turret system)
1988 (T-55AM integration)
Developer
United Kingdom - Marconi
Production
1991 - 1993
Producer
United Kingdom - Marconi
Number produced
7
Designations
ItPsv 90 / Ilmatorjuntapanssarivaunu 90
Finnish for "anti-aircraft tank 90"
Notable users
Finland - Army

Description


Introduction

The Marksman is a modern self-propelled anti-aircraft gun of UK origin. It was developed for the export market but sales have been limited to Finland only. The Marksman is a powerful system with similar performance as the German Gepard and Japanese Type 87.

Layout

The Marksman system uses a large box shaped two man turret. On each side a 35mm KDA autocannon is mounted and a radar is fitted on top. The turret can be used on a variety of chassis types. All production models were built on the T-55AM tank chassis.

Firepower

The Marksman is armed with two 35mm Oerlikon KDA autocannon. Each gun fires at 550 rpm and is supplied with 220 HE rounds plus 20 AP rounds for use against ground targets. The effective anti-aircraft range is 4 km. In a normal engagement 20 to 40 rounds are fired at a single target.

Fire control

Fire control is provided by a single Marconi Series 400 I/J-band radar. This has a surveillance range of 12 km and tracking range of 10 km. Additionally a gyro-stabilized optical sight is fitted for manual use against aerial and ground targets.

Protection

The Marksman is operated under full armor protection. The steel armor protects against small arms fire and shell splinters. Smoke grenade dischargers are fitted and an NBC system is optional.

Mobility

The T-55AM chassis provides for a good cross-country mobility albeit at limited speeds. The 620 hp diesel engine provides a maximum road speed of 45 km/h and range of 400 km. The refit of the turrets onto the Leopard 2 chassis provides a massive boost in mobility.

Users

The Marksman system was only adopted by Finland. It is believed that up to 10 turrets have been delivered and 7 systems are in use. The Marksman system is no longer marketed. The Marksman on T-55AM chassis was put in long term storage in 2010. Recently the turret were refitted onto the Leopard 2 chassis and put back in service.

Details


Facts T-55 Marksman
General
Origin
Finland
Type
Self-propelled anti-aircraft gun
Crew
3 (commander, driver, gunner)
Dimensions
Weight
41 t combat load
Length
6.2 m hull
9 m guns forward
Width
3.3 m
Height
About 4 m
Main armament
Type
2x 35mm Oerlikon KDA autocannon
Mount
Single autocannon on either side of turret
Ammunition
460 HE and 40 AP
Elevation
-10° to + 85°, powered
Traverse
360°, powered, 60°/s
Stabilizer
Yes, can fire on the move at very limited speed
Fire control
Radar
Marconi Series 400 I/J-band search & tracking
12 km search range
10 km tracking range
Optical sight
Gyro stabilized with integral laser range finder
Chassis
Chassis type
Tracked chassis, 6 roadwheels
Idler front and drive sprocket rear
Ground pressure
0.93 kg/cm²
Suspension
Torsion bar
Automotive
Engine
V-55U V12 diesel
Power output
620 hp at 2.000 rpm
Transmission
Manual, 5 forward, 1 reverse
Fuel
960 L
Mobility
Speed
About 45 km/h
Range
About 400 km
Power to weight ratio
15 hp/t
Obstacle crossing
Ground clearance
0.43 m
Wall
0.8 m
Trench
2.7 m
Fording
1.4 m
Protection
Armor type
Steel
Armor thickness
Turret rated to resist 14.5mm rounds
Smoke system
8x 76mm smoke grenade dischargers
Exhaust diesel injection

Media


Related articles


Leopard 2 Marksman

The Leopard 2 Marksman is fitted with the turrets taken from the T-55 Marksman, after several years of storage.

35mm Oerlikon KDA

Armament of the T-55 Marksman consists of two Oerlikon KDA autocannon, which fire the 35x228mm round.