truck. The engine is a 64 kW (86 hp) Audi 2.1-litre diesel engine giving a top speed of 70 km/h (45 mph). The Wiesel can ford deep water and cross a wide trench. It was manufactured by Rheinmetall AG. The chassis is made of steel armour and can resist common 5.56 mm and 7.62 mm small arms ammunition and shell splinters. Air dropping the vehicle from a plane with parachutes was tested, but was not successful; four test-vehicles were destroyed. Nevertheless, the Wiesel can easily be flown in by transport helicopters, a single CH-53 Sea Stallion helicopter can fly in two at once, and common transport planes can carry four or more Wiesel vehicles. The larger Wiesel 2 has almost twice as much internal volume as its predecessor, and is about long, high (depending on type), and wide. Its weight is approximately in its heaviest configuration. Wiesel 1 Variants in service Wiesel 1 Aufklärung: reconnaissance Wiesel 1 ATM TOW: anti-tank vehicle fitted with TOW missiles Wiesel 1TOW: Updated with BMS Wiesel 1 MK20: fire support version with a Rheinmetall MK 20 Rh202 20mm autocannon Wiesel 1 MK20 Variant 1: updated with new sight Wiesel 1 MK20 Variant 2: updated with BMS Remotely controlled Wiesel 1 equipped with ground-scanning radar as part of the Route Clearance System Prototypes and studies Wiesel 1 ATM TOW Resupply: cargo carrier fitted with racks for TOW missiles Wiesel 1 BTM-208: fitted with a SAMM BTM-208 turret armed with .50-cal (12.7mm) M2HB and 7.62mm Rheinmetall MG 3 machine guns Wiesel 1 ATM HOT: anti-tank vehicle fitted with HOT missiles Wiesel 1 ATM HOT Variant 1: fitted with UTM-800 turret Wiesel 1 Radar: fitted with RATAC-S multi-purpose radar Wiesel 1 MK25: 25 mm armed version Wiesel 2 The Wiesel 2 is a stretched version of the Wiesel 1, with a fifth roadwheel. The engine was changed to a 1.9L Volkswagen in-line four-cylinder turbo diesel with direct injection and intercooler, giving 109 hp (81 kW) coupled to a ZF automatic transmission. The Wiesel 2 is generally bigger, faster and stronger than the Wiesel 1, with advanced features for the protection of the crew such as enhanced armour, an air conditioning system, and NBC protection. Variants Wiesel 2 Light Air Defence System (leichtes Flugabwehrsystem - LeFlaSys) Wiesel 2 Air Defence Command Post Wiesel 2 Air Defence Reconnaissance and Fire Control Vehicle (RFCV): fitted with an air defence radar Wiesel