thumb|250px|Błotniak Błotniak (Polish for "Harrier") is a one-man wet cabin underwater craft designed in Poland in 1978. It was based in the torpedo research centre in Gdynia.
thumb|250px|Błotniak Błotniak (Polish for "Harrier") is a one-man wet cabin underwater craft designed in Poland in 1978. It was based in the torpedo research centre in Gdynia.
==Technical data== ===Specification=== propulsion: two batteries of compressed air accumulators in the tubes on the sides of the craft one set of ducted contra-rotating propellers one electrical motor as a source of power for the propeller equipment: two spotlights 2 sonars (passive and active) depth-levelling system maximum speed: range: load capacity:
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).