minisubmarine

/ˈmɪniˌsʌbmərin/
noun
  1. A small submarine, often used for research, exploration, or short underwater trips.
    • Tourists can ride in a minisubmarine to see coral reefs up close.
    • The rescue team deployed a minisubmarine to search for the missing vessel.
    • The scientists used a minisubmarine to explore the deep ocean trench.
Synonyms
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