UB-3 Hungary's First and Only Submarine ( 1919 ) 

Smoothest voice upgrades his video intros!

very interesting. thank you for posting

Almost top-notch translation, with a few minor mistakes at 2:40 .... Im not some military expert, but i think "displacement" should be "vízkiszorítás" and "range" should be translated as "hatótáv". "Diving depth" sounds better by "merülési mélység", although all 3 can be figured out, even if someone doesnt understand english words... Fun fact, that even as a hungarian myself, i havent ever heard about any hungarian submarines... o.O And i might remember incorrectly, but i think that conflict with Romania also never-ever has been mentioned as "war"...Yes, we know that they captured our capital and remained in the country for some time, but i think noone ever referred to it as an actual war...

Great video as always! Would you be interested in a collaboration?