قائمة فئات يو-بوت
الحرب العالمية الثانية

تحتوي هذه القائمة على غواصات يو بوت الألمانية قبل أو أثناء الحرب العالمية الثانية.
| الفئة | سنة التقديم | عدد غواصات يو بوت التي بنيت | Comments |
| --- | --- | --- | --- |
| غواصة الفئة الأولى | 1934 | 2 | أسطول المحيط على غرار تصاميم الحرب العالمية الأولى |
| غواصة الفئة الثانية إيه | 1935 | 6 | نموذج غواصة دوريات ساحلية |
| غواصة الفئة الثانية بي | 1934 | 20 | تحسين اغواصة دوريات ساحلية |
| غواصة الفئة الثانية سي | 1937 | 8 | غواصة دوريات ساحلية بعيدة المدى |
| غواصة الفئة الثانية دي | 1939 | 16 | Long range coastal patrol submarine |
| غواصة الفئة الثالثة |  | 0 | Design schematics created for a mine-layer submarine.  Project was dropped due to design flaws |
| غواصة الفئة الثالثة إيه |  | 0 | Prototype small boat carrier designed to hold two fast torpedo boats.  Project discontinued due to difficulties launching small boats in heavy seas |
| غواصة الفئة الرابعة |  | 0 | First attempt at a designing a supply U-boat for replenishment at sea.  Cancelled shortly after initial designs. |
| غواصةالفئة الخامسة | 1940 | 1 | Prototype boat, known as V-80, to test a chemical reaction engine. |
| غواصة الفئة السادسة |  | 0 | Prototype steam propulsion submarine |
| غواصة الفئة السابعة إيه | 1935 | 10 | First practical post-World War I attack submarine |
| غواصة الفئة السابعة بي | 1936 | 24 | Standard attack submarine in the early months of World War II |
| Vغواصة الفئة السابعةسي | 1938 | 568 | Attack submarine "work horse" for the majority of World War II. |
| غواصة الفئة السابعة سي فلانك | 1942 | 4 | Special variant of Type VII which removed the deck gun and added extra anti-aircraft guns |
| غواصة الفئة السابعة/41 | 1941 | 91 | Upgraded attack boat with several additional offensive and defensive features as well as better diving ability. |
| غواصة الفئة السابعة/42 | 1942 | 0 | Project was cancelled in lieu of contracts for the Type XXI electrical attack boats |
| غواصة الفئة السابعة دي | 1940 | 6 | Mine layer submarine, few were produced |
| غواصة الفئة السابعة إي |  | 0 | Early designs indicate this was to be a deep diving submarine |
| غواصة الفئة السابعة أف | 1941 | 4 | Designed to be used as torpedo transport. |
| غواصة الفئة الثامنة |  | 0 | Intended as a fast attack submarine.  Never went beyond initial designs |
| غواصة الفئة التاسعة | 1936 | 8 | First post World War I long range fleet ocean boat |
| غواصة الفئة التاسعة بي | 1937 | 14 | Standard pre-World War II fleet ocean boat |
| غواصة الفئة التاسعة سي | 1939 | 54 | Upgraded fleet ocean boat used in the opening years of World War II |
| غواصة الفئة التاسعة سي/40 | 1940 | 87 | Enhanced fleet ocean boat with better diving abilities |
| غواصة الفئة التاسعة دي1 | 1940 | 2 | Heavy diesel boat, suffered from numerous design flaws.  Rebuilt as long range transports |
| غواصة الفئة التاسعة دي2 | 1940 | 28 | Heavy diesel engine long range fleet boat.  Heaviest and largest of the IX series |
| غواصة الفئة التاسعة/دي42 | 1942 | 2 (+ 4 cancelled) | Attempt to upgrade the heavy diesel engine design.  Never deployed operationally |
| غواصة الفئة العاشرةإيه | 1939 | 0 | Designed to be used as mine layer.  Retooled as the XB transport boat |
| غواصة الفئة العاشرة بي | 1939 | 8 | Long range transport boat |
| XI | 1937 | 0 | "Cruiser submarine" with large deck guns.  Project was cancelled |
| XII |  | 0 | Initial designs only.  Listed as "Advanced Fleet Ocean Boat".  Never developed. |
| XIII |  | 0 | Initial designs only.  Listed as "Advanced Coastal Boat".  Never developed. |
| XIV | 1940 | 10 | Designed to be used as supply U-boat.  Known by the nickname "Milk Cow" |
| XV |  | 0 | Initial designs only.  Listed as "Long Range Transport Boat".  Never developed. |
| XVI |  | 0 | Initial designs only.  Listed as "Long Range Repair Boat".  Never developed. |
| XVIIA | 1942 | 4 | Fast attack boat with chemical propulsion system |
| XVIIB | 1943 | 3 | Upgraded version of the XVIIB with slightly better abilities |
| XVIIG | 1944 | 0 | Upgraded version of the Type XVII.  Boats were ordered but never deployed |
| XVIIK |  | 0 | Prototype for a closed cycle diesel engine submarine.  Never advanced beyond initial designs |
| XVIII | 1943 | 0 | 2 laid down, not completed.  Intended for use as an advanced fast attack boat |
| XIX |  | 0 | Initial designs only.  Listed as "Long range mine layer".  Never developed. |
| XX |  | 0 | Prototype for a "Long range transport boat".  Project cancelled. |
| XXI | 1943 | 118 | Most advanced U-boat of the Second World War.  The first of the "electrical boat" designs |
| XXII |  | 0 | Prototype for an "Advanced coastal boat".  Project cancelled. |
| XXIII | 1943 | 61 | Late war fast attack submarine, using the electrical boat design |
| XXIV |  | 0 | Initial designs only.  Listed as "Advanced fleet ocean boat".  Never developed. |
| XXV |  | 0 | Initial designs only.  Listed as "Advanced coastal boat".  Never developed |
| XXVI |  | 0 | Prototype for a "High speed attack boat".  Project cancelled. |
| XXVIIA | 1944 | 53 | Midget submarine "Hecht" |
| XXVIIB | 1944 | 285 | Midget submarine "Seehund" |