38 cm SK L/45 "Max"
The 38 cm SK L/45 "Max", also called Langer Max was a German long-range, heavy siege and coast-defense gun used during World War I. Originally a naval gun, it was also adapted for land service when it ... Wikipedia
Barrel length: 16.13 metres (52 ft 11 in) L/45
Calibre: 38 centimetres (15 in)
Designed: 1912–14
Effective firing range: 22,200 metres (24,300 yd) (from rails)
Maximum firing range: 47,500 metres (51,900 yd) (if emplaced)
No. built: 8
Shell: separate-loading, cased charge