Forum Game rules: Post whatever you currently have in your clipboard right now. No fakes ftw! No Discussion about it in here! START: Like every British tank since the Centurion, and most other British AFVs, Challenger 2 contains a boiling vessel (BV) also known as a kettle or bivvie for water which can be used to brew tea, produce other hot beverages and heat boil-in-the-bag meals contained in ration packs. This BV requirement is general for armoured vehicles of the British Armed Forces, and is unique to the armed forces of the UK.