thumb|Internal mechanism of the Brandtaucher submarine in Dresden thumb|The Brandtaucher submarine cutaway model in Dresden, Germany thumb|Sketch of the Brandtaucher (from an 1896 book)
thumb|Internal mechanism of the Brandtaucher submarine in Dresden thumb|The Brandtaucher submarine cutaway model in Dresden, Germany thumb|Sketch of the Brandtaucher (from an 1896 book)
Brandtaucher (German for Fire-diver) was a submersible designed by the Bavarian inventor and engineer Wilhelm Bauer and built by Schweffel & Howaldt in Kiel for Schleswig-Holstein's Flotilla (part of the Reichsflotte) in 1850. The Brandtaucher is the oldest known surviving submarine in the world.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).