Many other inventors designed and built prototype diving boats, until in 1851 Wilhelm Bauer was able to carry out successful trials with his "Brandtaucher" which is still to be seen at the Potsdam Army Museum.
Abaqambi abanininzi abayila bakha umzekelo wokuqala wezikhitshane zokuntywila, kude yangu1851 uWilben Bauer wakwazi ukwenza imilingo enempumelelo nge ``Brandtaucher'' eseza kubonwa kwisakhiwo ekugcinwa kuso izinto ngezinto ezintle nezakudala zomkhosi wasePotsdam.