Team : The Leonic Commonwealth # Chieftain Mk.12 Role : Main Battle Tank ## [General information](/md/rv/vehicles/chieftain-mk12.md#general-information) Description : The **Chieftain Mk.12** is a Main Battle Tank and a late upgrade of the British Chieftain series, which served as the UK's primary MBT from the 1960s into the 1990s. The Chieftain was renowned for its powerful **120mm L11A5** rifled gun and heavy frontal armour, though the **Leyland L60** multi-fuel engine remained a weak point. The 57.2 t tracked vehicle is crewed by four — driver, gunner, commander, and loader — and reaches 48 km/h forward. The **Leyland L60 V2** diesel produces 840 hp for a 14.7 hp/t power-to-weight ratio. Main armament is the **120mm L11A5** with a stabilizer, fed with L31A7, L23A1, and L34A2 ammunition; a coaxial **7.62mm L8A1** and a commander **7.62mm L37A1** round out the armament. The gunner has a laser rangefinder, 10x main and thermal (Gen 2) sights, and a 7x backup sight, with a full fire control system and lead computation. Smoke grenades provide defensive screening. Locomotion : Tracked Supported classes : Crewman Obtainment : Free ## [In-game availability](/md/rv/vehicles/chieftain-mk12.md#in-game-availability) | Team/Loadout | [Cold War](/md/rv/loadouts/cold-war.md) | | ---------------------------------------------------- | --------------------------------------- | | [Eagle Federation](/md/rv/teams/eagle-federation.md) | Tier 6 | ## [Vehicle](/md/rv/vehicles/chieftain-mk12.md#vehicle) | Weight | 57.2 t | | ---------------- | --------- | | Seating capacity | 4 | | Driver | 1 | | Gunner | 1 | | Commander | 1 | | Loader | 1 | | Max speed | | | Forward | 48 km/h | | Backward | 11.1 km/h | ## [Powertrain](/md/rv/vehicles/chieftain-mk12.md#powertrain) | Engine | Leyland L60 V2 | | --------------------- | -------------- | | Type | Diesel | | Max RPM | 2,550 RPM | | Horsepower | 840 hp | | Power-to-weight ratio | 14.7 hp/t | | Transmission | | | Forward gears | 6 | | Reverse gears | 2 | | Neutral steering | Yes | ## [Armour](/md/rv/vehicles/chieftain-mk12.md#armour) | Lower front plate | 94 mm–109 mm | | ----------------- | ------------- | | Upper front plate | 259 mm–503 mm | | Left cheek | 393 mm–812 mm | | Right cheek | 307 mm–964 mm | | Mantlet | 140 mm–351 mm | | Hull side | 45 mm–48 mm | ## [Gunner turret](/md/rv/vehicles/chieftain-mk12.md#gunner-turret) Feature: Stabilizer Feature: Smoke grenades | Traversal | | | ---------------- | ---------- | | Horizontal speed | 22.5 deg/s | | Vertical speed | 22.5 deg/s | | Vertical limits | -10° / 20° | ### [Weapons](/md/rv/vehicles/chieftain-mk12.md#gunner-turret-weapons) #### [120mm L11A5](/md/rv/vehicles/chieftain-mk12.md#gunner-turret-weapon-120mm-l11a5) | Reload speed | 7.5s | | ------------------------------------------------------- | ---- | | Refill speed | 6s | | Ammo | Max | | [Shell L31A7](/md/rv/shells/120mm-l11a5-shell-l31a7.md) | 24 | | [Shot L23A1](/md/rv/shells/120mm-l11a5-shot-l23a1.md) | 16 | | [Shell L34A2](/md/rv/shells/120mm-l11a5-shell-l34a2.md) | 6 | | Ammo models | | | Turret ammo | 34 | | Hull ammo | 12 | #### [7.62mm L8A1](/md/rv/vehicles/chieftain-mk12.md#gunner-turret-weapon-762mm-l8a1) | Reload speed | 6s | | ------------------------------------ | --- | | Magazine size | 200 | | Ammo | Max | | [AP](/md/rv/shells/762mm-l8a1-ap.md) | \* | | Ammo models | | | Coax ammo | 30 | ### [Sights](/md/rv/vehicles/chieftain-mk12.md#gunner-turret-sights) #### [Main sight](/md/rv/vehicles/chieftain-mk12.md#gunner-turret-sight-1) Feature: FCS Fire control system | Rangefinder | Laser | | --------------- | -------- | | Vertical limits | -10°–20° | | Zoom | 1x, 10x | #### [Thermal sight](/md/rv/vehicles/chieftain-mk12.md#gunner-turret-sight-2) Feature: FCS Fire control system | Rangefinder | Laser | | -------------------- | ---------------------------------- | | Thermals | Green (Gen 2) (forced) | | Vertical limits | -10°–20° | | Thermal zoom | 10.2°, 3.9° Vertical field of view | | Thermal aspect ratio | 1.52 | #### [Backup sight](/md/rv/vehicles/chieftain-mk12.md#gunner-turret-sight-3) Feature: FCS Fire control system | Rangefinder | None | | --------------- | -------- | | Vertical limits | -10°–20° | | Zoom | 7x | ## [Commander turret](/md/rv/vehicles/chieftain-mk12.md#commander-turret) | Traversal | | | ---------------- | ---------- | | Mouse aim | Yes | | Horizontal speed | 60 deg/s | | Vertical speed | 60 deg/s | | Vertical limits | -10° / 30° | ### [Weapons](/md/rv/vehicles/chieftain-mk12.md#commander-turret-weapons) #### [7.62mm L37A1](/md/rv/vehicles/chieftain-mk12.md#commander-turret-weapon-762mm-l37a1) | Reload speed | 6s | | ------------------------------------- | --- | | Magazine size | 100 | | Ammo | Max | | [AP](/md/rv/shells/762mm-l37a1-ap.md) | \* | | Ammo models | | | Commander ammo | 20 | ### [Sights](/md/rv/vehicles/chieftain-mk12.md#commander-turret-sights) #### [Sight 1](/md/rv/vehicles/chieftain-mk12.md#commander-turret-sight-1) | Rangefinder | None | | ----------- | ------ | | Zoom | 1x–10x | ## [Gallery](/md/rv/vehicles/chieftain-mk12.md#gallery) | Type | URL | | --------- | ----------------------------------------------------------------------------- | | Thumbnail | https://cdn.astrid.ovh/public-stats-images/chieftain-mk12/perspective.png | | Front | https://cdn.astrid.ovh/public-stats-images/chieftain-mk12/front.png | | Back | https://cdn.astrid.ovh/public-stats-images/chieftain-mk12/back.png | | Left | https://cdn.astrid.ovh/public-stats-images/chieftain-mk12/left.png | | Right | https://cdn.astrid.ovh/public-stats-images/chieftain-mk12/right.png | | Top | https://cdn.astrid.ovh/public-stats-images/chieftain-mk12/top.png | | Armor | https://cdn.astrid.ovh/public-stats-images/chieftain-mk12/armor_thumbnail.png | ID: "Chieftain Mk 12"