Editing Type I submarine

{{Short description|Class of German U-boat}}
{|{{Infobox ship begin}}
{{Infobox ship image
| Ship image = U-25.jpg
| Ship image size = 300px
| Ship caption = {{GS|U-25|1936|2}}, a Type I U-boat.
}}
{{Infobox ship class overview
| Name = 
| Builders = [[Deschimag]], Bremen
| Operators = {{Navy|Nazi Germany|name=''Kriegsmarine''}}
| Class before = [[TCG Gür (1936)|Spanish Type E1]]
| Class after = *[[Type VII submarine|Type VII]] (patrol submarine)
*[[Type IX submarine|Type IX]] (oceanic submarine)
| Subclasses = 
| Cost = {{Reichsmark|4,500,000|link=yes}}
| Built range = 
| In service range = 
| In commission range = 1936 – 1940
| Total ships planned = 2
| Total ships completed = 2
| Total ships lost = 2
}}
{{Infobox ship characteristics
| Hide header = 
| Header caption = 
| Ship class = 
| Ship type = 
| Ship displacement = *{{convert|862|t|LT|lk=on|abbr=on}} surfaced
*{{convert|982|t|LT|abbr=on}} submerged
*Official displacement was 712 [[tons standard]]
| Ship length = {{convert|72.39|m|ftin|abbr=on}}
| Ship beam = {{convert|6.21|m|ftin|abbr=on}}
| Ship draft = {{convert|4.30|m|ftin|abbr=on}}
| Ship propulsion = *Diesel-electric:
**2 × [[MAN SE|MAN]] M&nbsp;8&nbsp;V&nbsp;40/46 8-cylinder [[diesel engine]]s with {{convert|2900|-|3080|PS|shp kW|lk=on|abbr=on}}
**2 × [[Brown, Boveri & Cie|BBC]] GG&nbsp;UB&nbsp;720/8 [[Motor-generator|double acting electric motor]]s with {{convert|1000|PS|shp kW|abbr=on}}
| Ship speed = *{{convert|17.7|-|18.6|kn|lk=on}} surfaced
*{{convert|8.3|kn}} submerged
| Ship range = *{{convert|7,900|nmi|abbr=on}} at {{convert|10|kn}} surfaced
*{{convert|78|nmi|abbr=on}} at {{convert|4|kn}} submerged
| Ship test depth = {{convert|200|m|ft|abbr=on}}
| Ship complement = 4 officers, 39 enlisted
| Ship sensors = 
| Ship armament = *6 × [[torpedo tube]]s (four bow, two stern)
*22 × {{convert|53.3|cm|in|0|abbr=on}} [[torpedo]]es
*1 × [[10.5 cm SK C/32 naval gun|{{convert|10.5|cm|in|abbr=on}} SK C/32 naval gun]] (180 rounds)
*[[anti-aircraft gun]]s
| Ship notes = 
}}
|}

The '''Type I [[U-boat]]''' was the first post–[[World War I]] attempt to produce an oceangoing submarine  for [[Nazi Germany]]'s ''[[Kriegsmarine]]''. The type was based on the [[TCG Gür (1936)|Spanish Type E-1]]{{sfn|Gröner|1991|p=39}} and Finnish [[Finnish submarine Vesikko|CV707]], which were both designed by [[Ingenieurskantoor voor Scheepsbouw]].<ref name="Rössler9899">Rössler (2001), pp. 98-99.</ref> Only two Type IAs were built.<ref name="Showell73">Showell (2006), p. 73.</ref> They were not a successful design : due to its single rudder they had a large turning circle and were not very manoeuvrable. The gravity center of the U-boat was too forward so on the surface the type I had its propellers exposed when she was pitching. Whilst submerged there were problems with depth keeping and stability as air bubbles in the fuel tanks wobbled back and forth. Diving was very slow: at full speed and with six tons of negative buoyancy it took forty seconds to reach ten metres depth. As a result, the type was discontinued and the new [[Type IX submarine|type IX]] class of ocean-going U-boats was designed.{{Sfn|Paterson|2003|p=x-xi}}

==Service history==
Constructed by [[Deschimag]] in [[Bremen (city)|Bremen]], the first Type IA was launched on 14 February 1936.<ref name="Sharpe13">Sharpe (1998), p. 13.</ref> The two boats produced, {{GS|U-25|1936|2}} and {{GS|U-26|1936|2}}, were primarily used as training vessels and for propaganda purposes to fly the [[Nazi Germany|Nazi]] flag. In 1940, the boats were called into combat duty due to the shortage of available submarines.<ref name="Williamson16">Williamson (2005), p. 16.</ref> Both boats experienced short, but successful combat careers. ''U-25'' participated in five war cruises, sinking eight enemy ships. On 3 August 1940, while on a mine laying mission near [[Norway]], ''U-25'' struck a mine and sank with all hands on board.{{sfn|Gröner|1991|p=39}}

''U-26'' carried out eight war cruises, sinking three merchant ships on its first mission laying mines. On its second war cruise it became the first U-boat during [[World War II]] to enter the [[Mediterranean Sea]]. ''U-26'' participated in three other successful war patrols, sinking four additional merchant ships. On its eighth war cruise the boat sank three merchant ships and damaged another ship the next day. The attack on this ship led to severe depth-charging by two British warships, including {{HMS|Gladiolus|K34|6}}.{{sfn|Gröner|1991|p=39}} Unable to dive, ''U-26'' was forced to surface where she was bombed by a [[Short Sunderland|Sunderland flying boat]]. The crew scuttled the submarine and were rescued by [[Allies of World War II|Allied]] warships.

== List of Type I submarines ==
*{{GS|U-25|1936}}
*{{GS|U-26|1936}}

==References==
{{Reflist}}

==Bibliography==
{{refbegin}}
*{{cite book
|last1=Gröner
|first1=Erich
|last2=Jung
|first2=Dieter
|last3=Maass
|first3=Martin
|translator-last1=Thomas
|translator-first1=Keith
|translator-last2=Magowan
|translator-first2=Rachel
|year=1991
|title=German Warships 1815–1945, U-boats and Mine Warfare Vessels
|volume=2
|location=London
|publisher=Conway Maritime Press
|isbn=0-85177-593-4
|ref=CITEREFGröner1991
}}
*{{Cite book |last=Paterson |first=Lawrence |title=Second U-Boat Flottila |publisher=Leo Cooper |year=2003 |isbn=0-85052-917-4 |edition= |location= |language= }}
*{{cite book |last=Sharpe |first=Peter |date=1998 |title=U-Boat Fact File: Detailed Service Histories of the Submarines Operated by the Kriegsmarine 1935-1945 |location=Leicester |publisher=Midland Publishing |isbn=1-85780-072-9}}
*{{cite book |last=Showell |first=Jak P. Mallmann |date=2006 |title=The U-boat Century: German Submarine Warfare 1906-2006 |location=London |publisher=Chatham Publishing |isbn=9781861762412}}
*{{cite book |last=Rössler |first=Eberhard |date=2001 |title=The U-boat: The evolution and technical history of German submarines |location=London |publisher=Cassell & Co |isbn=0-304-36120-8}}
*{{cite book |last=Williamson |first=Gordon |date=2005 |title=Wolf Pack: The Story of the U-boat in World War II |location=Oxford |publisher=Osprey Publishing |isbn=1-84176-872-3}}
{{refend}}

==External links==
*{{cite web | title= U-Boat Aces.com| work= U-Boat Types – Type IA U-Boat| url=http://www.uboataces.com/uboat-type-ia.shtml| access-date=July 31, 2006}}
*{{cite web
 |title= U-Boat Types – Type IA
 |url=http://www.uboat.net/types/ia.htm
 |last=Helgason
 |first=Guðmundur
 |website=German U-boats of World War II - Uboat.net
 |access-date=31 July 2006
}}

{{Type I U-boats}}
{{WWII German ships}}
{{Uboat}}
{{use dmy dates|date=April 2015}}

{{DEFAULTSORT:Type 001 Submarine}}
[[Category:German Type I submarines| ]]
[[Category:Submarine classes]]
[[Category:World War II submarines of Germany]]