Biber
Submarine
>
&h=1536&w=2048&tbnid=rbSUlelkt5Rm0M&q=Biber+(submarine)&tbnh=194&tbnw=259&usg=AI4_-kTPFnKJP9GPxHJcAp0qOdES2bkfDg&vet=1&docid=Ydr6tqs_wpvzyM&itg=1&sa=X&ved=2ahUKEwif4MeF0tqFAxVNg4kEHSFmCAAQ9QF6BAgAEAQ)
&h=165&w=220&tbnid=0ogtoMVsnISnwM&q=Biber+(submarine)&tbnh=80&tbnw=107&usg=AI4_-kR9_yU3PcrLRenZXpxmVSpPx5wgnA&vet=1&docid=Ydr6tqs_wpvzyM&sa=X&ved=2ahUKEwif4MeF0tqFAxVNg4kEHSFmCAAQ9QF6BAgAEAY)
&tbnh=84&tbnw=150&usg=AI4_-kRfgu2x-nLAwt0JfzLjBlde8aqdwQ&vet=1&docid=6BSc0MnWQbL9oM&sa=X&ved=2ahUKEwif4MeF0tqFAxVNg4kEHSFmCAAQ9QF6BAgAEAg)
&tbnh=84&tbnw=150&usg=AI4_-kSoCbs5tn8GL5qk-Xwcb6eBAlPVgw&vet=1&docid=tc6RfJVoXArs0M&sa=X&ved=2ahUKEwif4MeF0tqFAxVNg4kEHSFmCAAQ9QF6BAgAEAo)
Biber was a German midget submarine of the Second World War. Armed with two externally mounted 53-centimetre torpedoes or mines, they were intended to attack coastal shipping. They were among the smallest submarines in the Kriegsmarine. Wikipedia
Length: 29′
Crew: 1
Operators: Kriegsmarine
Speed: 6.5 knots (12.0 km/h) surfaced; 5.3 knots (9.8 km/h) submerged
Test depth: 20 m maximum