Jagdtiger ("Hunting Tiger") is the common nameof a German turretless heavy tank destroyer of World War II The official German designation was Panzerjäger Tiger Ausf. B as it was based on a lengthened Tiger II chassisThe ordnance inventory designation was Sd. Kfz. 186. The 71-tonne Jagdtiger was the heaviest armored fighting vehicle used operationally during World War II and is the heaviest armored vehicle of any type to achieve series production three Jagdtigers survive in museums https://en.wikipedia.org/wiki/Jagdtiger