SPG Kalina The SPG " Kalina " ( - lit . " Special - purpose Tracked Chassis " ; " Kalina " is Polish for " guelder rose " ) is a heavy , multi - purpose armoured personnel carrier designed at the OBRUM ( " OBRUM " stands for " Ośrodek Badawczo - Rozwojowy Urządzeń Mechanicznych " – Polish for " Research and Development Centre for Mechanical Appliances " ) and is produced by the Bumar Łabędy company - part of Polish military consortium - Bumar Group . SPG is a development of the joint Poland , Soviet Union and East Germany transporter called MT - S , developed in the late 1980s . Variants . N - 21 . is a three dimensional radar used to detect targets at low altitudes ( up to 5 km ) at ranges up to 100 km . The radar was designed by polish company " Radwar " . Radar is using SPG - 1 , non armored carrier vehicle . SUM " Kalina " . ( SUM for " Samobieżny Ustawiacz Min " - lit . " Self propelled Minelayer " ) is a tracked minelayer developed from SPG - 1M specifically for the rapid laying of surface and buried anti - tank mines . The SUM minelayer has a crew of two . The minelaying system is carried at the rear of the vehicle with mines being automatically fed into the system from two magazines carried within the armoured superstructure ; each magazine can hold up to 125 anti - tank mines of the or Wierzba type . The mine magazines are replenished or replaced using a K10 crane mounted at the rear of the vehicle which has a lifting capacity of 2 , 800 kg . The mine magazines can also be reloaded manually while the magazines are inside the vehicle . Supervision of the laying process can be carried out using a rear - mounted video camera connected to a monitoring screen inside the vehicle . The monitoring screen is located over a control panel used to control the minelaying operations . Provision is made for operations under NBC conditions by an air filtration system and a or Polish - produced Tafios detection device . When burying mines the vehicle can travel at a speed between 6 and 10 km / h . When laying surface mines the speed range is from 6 to 20 km / h . It is possible to lay mines in water up to 900 mm deep at a speed of 6 km / h . The vehicle is armed with a 12 . 7 mm NSW machine gun ; 902A smoke grenade launchers are also provided . BWP - 2000 . Infantry fighting vehicle based on SPG - 1M . The hull of the vehicle is made entirely out of welded steel . It protects the vehicle against APFSDS - T projectiles of up to 35 mm in calibre over the frontal arc . The roof and sides protect it against 12 . 7 mm rounds fired from a range of 100 m . The other parts of the armour protect it against 7 . 62 mm rounds from any distance and angle . Both the hull and the turret can be fitted with additional passive of explosive reactive armour . The driver has a single - piece hatch cover that lifts and opens to the right ( like in the BWP - 1 ) . In front of the driver ' s hatch is located a wide - angle periscope which can be replaced by a passive night vision device for use during night conditions . The power pack an air inlet / outlet louvres in the roof and the exhaust outlet on the right hand side . The turret is the Italian Oto Melara T60 / 70A which is normally armed with a stabilized 60 mm rifled autocannon , a 7 . 62 mm coaxial machine gun and 12 . 7 mm anti - aircraft heavy machine gun . Inside the turret are the stations of both the gunner and the commander . The 60 mm autocannon can be replaced by a variety of guns from 25 mm autocannons to 105 mm guns . The turret is equipped with two clusters of four electrically operated smoke grenade launchers on each side . The troop compartment can transport up to eight fully equipped soldiers . Like in the BWP - 1 the troops enter and leave the vehicle through the rear of the vehicle but in BWP - 2000 they do this via a power - operated ramp . Two prototypes were made and in 1997 one of them was fitted with a fully developed and tested Italian Oto Melara T60 / 70A turret . This turret was developed as a private venture by Oto Melara and it has remained in prototype stage . There are no plans for the Polish BWP - 2000 IFV to enter production for the Polish Army . Krab . A 155mm howitzer on UPG chassis . UPG ( UPG for Uniwersalne Podwozie Gąsiennicowe – lit . Universal Tracked Chassis ) is a heavy APC that is using technologies from SPG Kalina and PT - 91 Twardy .