22.5 cm Minenwerfer M 15

{{no footnotes|date=September 2014}}

{{Infobox weapon

|name=22.5 cm Minenwerfer M 15

| image=Schwere Minenwerfer, möglicherweise nahe eines Schiessstandes bei Kowel (BildID 15684605).jpg

| image_size =

|caption=22.5 cm Minenwerfer in 1917

|origin=Austria-Hungary

|type=Heavy trench mortar

|is_ranged=

|is_bladed=

|is_explosive=

|is_artillery=yes

|is_vehicle=

|is_UK=

|service=1915–1918

|used_by=Austria-Hungary
Ottoman Empire

|wars=World War I

|designer=Böhler

|design_date=1914-15

|manufacturer=Böhler

|production_date=1915-18

|number=930+

|variants=M 16 and M 17

|weight={{convert|565|kg|lb|abbr=on}}

|length={{convert|1.35|m|ftin|abbr=on}} L/6

|part_length=

|width=

|height=

|crew=

|cartridge={{convert|48|kg|lb|abbr=on}}

|caliber={{convert|225|mm|in|abbr=on}}

|action=

|rate=2 rpm

|velocity={{convert|170|m/s|ft/s|abbr=on}}

|range=

|max_range={{convert|675|m|yd|abbr=on}}

|feed=

|sights=

|breech=

|recoil=

|carriage=

|elevation=+25° to +75°

|traverse=0°

|blade_type=

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|head_type=

|haft_type=

|diameter=

|filling=

|filling_weight=

|detonation=

|yield=

|armour=

|primary_armament=

|secondary_armament=

|engine=

|engine_power=

|pw_ratio=

|suspension=

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}}

The 22.5 cm Minenwerfer M 15 was a heavy mortar used by Austria-Hungary in World War I.{{Cite web |title=22.5cm Minenwerfer M15 / M16 / M17 Bohler |url=https://www.passioncompassion1418.com/Canons/Eng_AfficheCanonGET.php?IdCanonAffiche=713 |access-date=2024-08-27 |website=www.passioncompassion1418.com}} It was developed by Böhler as an alternative to the German Ehrhardt 25 cm schwere Minenwerfer which Böhler was having problems building under license. It was a muzzle-loading, smooth-bore mortar that had no recoil system whatsoever. The entire mortar had to be levered around to aim at new targets. It was not particularly accurate and bombs often fell over in flight and landed on their sides so they used time instead of contact fuzes. It fired high-explosive and gas shells. For transport two wheels from the Gebirgsgechütz M 99 were used.

The M 17 version of this weapon had an elevation screw with a double thread and reinforced trunnion bearings. It's unclear how the M 16 differed from the earlier model.