commander on two different Type U 31 U-boats. He first took over from Max Valentiner on U-38 and later on U-34. German Type U 31 submarines were double-hulled...

the Type VII class was together with the British U, S and T class and Dutch O 21 class one of the most advanced submarine classes in service. The Type VII...

U-31 (S181) is a Type 212A submarine of the German Navy, and the lead ship of her class. U-31 was built by TKMS, with construction taking place at the...

this type. U-167 U-168 U-169 U-170 U-183 U-184 U-185 U-186 U-187 U-188 U-189 U-190 U-191 U-192 U-193 U-194 U-525 U-526 U-527 U-528 U-529 U-530 U-531 U-532...

Type XXI submarines were a class of German diesel–electric Elektroboot (German: "electric boat") submarines designed during the Second World War. One...

The Type U 66 was a class of five submarines or U-boats operated by the German Imperial Navy (German: Kaiserliche Marine) during World War I. The class...

German submarine U-31 was a Type VIIA U-boat of Nazi Germany's Kriegsmarine during World War II. She was laid down on 1 March 1936 as yard number 912,...

U-2321 U-2322 U-2323 U-2324 U-2325 U-2326 U-2327 U-2328 U-2329 U-2330 U-2331 U-2332 U-2333 U-2334 U-2335 U-2336 U-2337 U-2338 U-2339 U-2340 U-2341 U-2342...

The Type XIV U-boat was designed to resupply other U-boats, being the only submarine tenders built which were not surface ships. It was nicknamed in German...

Nazi Germany's Kriegsmarine considered various submarine designs for specialized operations or improving U-boat performance. Many of these designs did not...