SM U-25

{{Infobox ship image

|Ship image=

|Ship caption=

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{{Infobox ship career

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|Ship country=German Empire

|Ship flag={{Shipboxflag|German Empire|naval}}

|Ship name=U-25

|Ship ordered=18 March 1911

|Ship builder=Germaniawerft, Kiel

|Ship yard number=179

|Ship laid down=7 May 1912

|Ship launched=12 July 1913

|Ship commissioned=9 May 1914

|Ship fate=23 February 1919 - Surrendered to France. Broken up at Cherburg in 1921-2.

|Ship homeport=

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{{Infobox ship characteristics

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|Header caption=Ocean-going diesel submarine

|Ship class=German Type U 23 submarine

|Ship displacement=*{{convert|669|t|LT|abbr=on|lk=on}} surfaced

• {{convert|864|t|LT|abbr=on}} submerged

|Ship length={{convert|64.70|m|ft|abbr=on}}

|Ship beam={{convert|6.32|m|ftin|abbr=on}}

|Ship draught={{convert|3.45|m|ftin|abbr=on}}

|Ship propulsion=*2 shafts

• 2 × Germania 6-cylinder two stroke diesel motors with {{convert|1800|PS|kW shp

|Ship speed=*{{convert|16.7|kn}} surfaced

• {{convert|10.3|kn}} submerged

|Ship range=*{{convert|7620|nmi|abbr=on|lk=in}} at {{convert|8|kn}} surfaced

• {{convert|85|nmi|abbr=on}} at {{convert|5|kn}} submerged

|Ship test depth=about {{convert|50|m|ft|abbr=on}}

|Ship boats=1 dingi

|Ship complement=4 officers, 31 men

|Ship sensors=

|Ship EW=

|Ship armament=*4 × {{convert|50|cm|in|1|abbr=on}} torpedo tubes (2 each bow and stern)

• 6 torpedoes
• 1 × 8.8 cm SK L/30 naval gun

|Ship motto=

|Ship nickname=

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|Ship notes=

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{{Infobox service record

|is_ship = yes

|label = Service record{{cite Uboat.net

|id=25

|name=U 25

|type=1sub

|accessdate=10 December 2014

}}

|partof =*IV Flotilla

• 1 August 1914 – Unknown end
• Training Flotilla
• Unknown start – 11 November 1918

|commanders =*Kptlt. Otto Wünsche

• 9 May 1914 – 15 September 1915
• Kptlt. Alfred Saalwächter unknown
• Kptlt. Emil Heusinger von Waldegg
• 23 October - 29 December 1917{{cite web|title=short biography of Emil Heusinger von Waldegg|periodical=Axis Biographical Research|url=http://www.geocities.ws/orion47.geo/WEHRMACHT/KRIEGSMARINE/Admirals/HEUSINGER_EMIL.html|accessdate=2016-07-21|language=German}}

|operations = 3 patrols

|victories =*21 merchant ships sunk
({{GRT|14,145}})

• 1 merchant ships damaged
  ({{GRT|163}})

}}